# Responses > For the complete documentation index, see [llms.txt](/llms.txt). Markdown versions of documentation pages are available by appending `.md` to the page URL. ## Cancel a response **post** `/responses/{response_id}/cancel` Cancels a model response with the given ID. Only responses created with the `background` parameter set to `true` can be cancelled. [Learn more](/docs/guides/background). ### Path Parameters - `response_id: string` ### Returns - `Response object { id, created_at, error, 32 more }` - `id: string` Unique identifier for this Response. - `created_at: number` Unix timestamp (in seconds) of when this Response was created. - `error: ResponseError or null` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. - `incomplete_details: object { reason } or null` Details about why the response is incomplete. - `reason: optional "max_output_tokens" or "content_filter"` The reason why the response is incomplete. - `"max_output_tokens"` - `"content_filter"` - `instructions: string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `string` A text input to the model, equivalent to a text input with the `developer` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `metadata: Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `object: "response"` The object type of this resource - always set to `response`. - `"response"` - `output: array of ResponseOutputItem` An array of content items generated by the model. - The length and order of items in the `output` array is dependent on the model's response. - Rather than accessing the first item in the `output` array and assuming it's an `assistant` message with the content generated by the model, you might consider using the `output_text` property where supported in SDKs. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `parallel_tool_calls: boolean` Whether to allow the model to run tool calls in parallel. - `temperature: number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `tool_choice: ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_p: number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `completed_at: optional number or null` Unix timestamp (in seconds) of when this Response was completed. Only present when the status is `completed`. - `conversation: optional object { id } or null` The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation. - `id: string` The unique ID of the conversation that this response was associated with. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `moderation: optional object { input, output } or null` Moderation results for the response input and output, if moderated completions were requested. - `input: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response input. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response output. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output_text: optional string or null` SDK-only convenience property that contains the aggregated text output from all `output_text` items in the `output` array, if any are present. Supported in the Python and JavaScript SDKs. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` The prompt-caching options that were applied to the response. Supported for `gpt-5.6` and later models. - `mode: "implicit" or "explicit"` Whether implicit prompt-cache breakpoints were enabled. - `"implicit"` - `"explicit"` - `ttl: "30m"` The minimum lifetime applied to each cache breakpoint. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `status: optional ResponseStatus` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `usage: optional ResponseUsage` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). ### Example ```http curl https://api.openai.com/v1/responses/$RESPONSE_ID/cancel \ -X POST \ -H "Authorization: Bearer $OPENAI_API_KEY" ``` #### Response ```json { "id": "id", "created_at": 0, "error": { "code": "server_error", "message": "message" }, "incomplete_details": { "reason": "max_output_tokens" }, "instructions": "string", "metadata": { "foo": "string" }, "model": "gpt-5.1", "object": "response", "output": [ { "id": "id", "content": [ { "annotations": [ { "file_id": "file_id", "filename": "filename", "index": 0, "type": "file_citation" } ], "logprobs": [ { "token": "token", "bytes": [ 0 ], "logprob": 0, "top_logprobs": [ { "token": "token", "bytes": [ 0 ], "logprob": 0 } ] } ], "text": "text", "type": "output_text" } ], "role": "assistant", "status": "in_progress", "type": "message", "phase": "commentary" } ], "parallel_tool_calls": true, "temperature": 1, "tool_choice": "none", "tools": [ { "name": "name", "parameters": { "foo": "bar" }, "strict": true, "type": "function", "allowed_callers": [ "direct" ], "defer_loading": true, "description": "description", "output_schema": { "foo": "bar" } } ], "top_p": 1, "background": true, "completed_at": 0, "conversation": { "id": "id" }, "max_output_tokens": 0, "max_tool_calls": 0, "moderation": { "input": { "categories": { "foo": true }, "category_applied_input_types": { "foo": [ "text" ] }, "category_scores": { "foo": 0 }, "flagged": true, "model": "model", "type": "moderation_result" }, "output": { "categories": { "foo": true }, "category_applied_input_types": { "foo": [ "text" ] }, "category_scores": { "foo": 0 }, "flagged": true, "model": "model", "type": "moderation_result" } }, "output_text": "output_text", "previous_response_id": "previous_response_id", "prompt": { "id": "id", "variables": { "foo": "string" }, "version": "version" }, "prompt_cache_key": "prompt-cache-key-1234", "prompt_cache_options": { "mode": "implicit", "ttl": "30m" }, "prompt_cache_retention": "in_memory", "reasoning": { "context": "auto", "effort": "none", "generate_summary": "auto", "mode": "standard", "summary": "auto" }, "safety_identifier": "safety-identifier-1234", "service_tier": "auto", "status": "completed", "text": { "format": { "type": "text" }, "verbosity": "low" }, "top_logprobs": 0, "truncation": "auto", "usage": { "input_tokens": 0, "input_tokens_details": { "cache_write_tokens": 0, "cached_tokens": 0 }, "output_tokens": 0, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 0, "compute_units": 0 }, "user": "user-1234" } ``` ### Example ```http curl -X POST https://api.openai.com/v1/responses/resp_123/cancel \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" ``` #### Response ```json { "id": "resp_67cb71b351908190a308f3859487620d06981a8637e6bc44", "object": "response", "created_at": 1741386163, "status": "cancelled", "background": true, "completed_at": null, "error": null, "incomplete_details": null, "instructions": null, "max_output_tokens": null, "model": "gpt-4o-2024-08-06", "output": [ { "type": "message", "id": "msg_67cb71b3c2b0819084d481baaaf148f206981a8637e6bc44", "status": "in_progress", "role": "assistant", "content": [ { "type": "output_text", "text": "Silent circuits hum, \nThoughts emerge in data streams— \nDigital dawn breaks.", "annotations": [] } ] } ], "parallel_tool_calls": true, "previous_response_id": null, "reasoning": { "effort": null, "summary": null }, "store": true, "temperature": 1.0, "text": { "format": { "type": "text" } }, "tool_choice": "auto", "tools": [], "top_p": 1.0, "truncation": "disabled", "usage": null, "user": null, "metadata": {} } ``` ## Compact a response **post** `/responses/compact` Compact a conversation. Returns a compacted response object. Learn when and how to compact long-running conversations in the [conversation state guide](/docs/guides/conversation-state#managing-the-context-window). For ZDR-compatible compaction details, see [Compaction (advanced)](/docs/guides/conversation-state#compaction-advanced). ### Body Parameters - `model: "gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 99 more or string or null` Model ID used to generate the response, like `gpt-5` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 99 more` Model ID used to generate the response, like `gpt-5` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `string` - `input: optional string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` Text, image, or file inputs to the model, used to generate a response - `string` A text input to the model, equivalent to a text input with the `user` role. - `array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `instructions: optional string or null` A system (or developer) message inserted into the model's context. When used along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt_cache_key: optional string or null` A key to use when reading from or writing to the prompt cache. - `prompt_cache_options: optional object { mode, ttl } or null` Options for prompt caching. Supported for `gpt-5.6` and later models. By default, OpenAI automatically chooses one implicit cache breakpoint. You can add explicit breakpoints to content blocks with `prompt_cache_breakpoint`. Each request can write up to four breakpoints. For cache matching, OpenAI considers up to the latest 80 breakpoints in the conversation, without a content-block lookback limit. Set `mode` to `explicit` to disable the implicit breakpoint. The `ttl` defaults to `30m`, which is currently the only supported value. See the [prompt caching guide](/docs/guides/prompt-caching) for current details. - `mode: optional "implicit" or "explicit"` Controls whether OpenAI automatically creates an implicit cache breakpoint. Defaults to `implicit`. With `implicit`, OpenAI creates one implicit breakpoint and writes up to the latest three explicit breakpoints in the request. With `explicit`, OpenAI does not create an implicit breakpoint and writes up to the latest four explicit breakpoints. If there are no explicit breakpoints, the request does not use prompt caching. - `"implicit"` - `"explicit"` - `ttl: optional "30m"` The minimum lifetime applied to every implicit and explicit cache breakpoint written by the request. Defaults to `30m`, which is currently the only supported value. The backend may retain cache entries for longer. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` How long to retain a prompt cache entry created by this request. - `"in_memory"` - `"24h"` - `service_tier: optional "auto" or "default" or "fast" or 2 more or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"fast"` - `"flex"` - `"priority"` ### Returns - `CompactedResponse object { id, created_at, object, 2 more }` - `id: string` The unique identifier for the compacted response. - `created_at: number` Unix timestamp (in seconds) when the compacted conversation was created. - `object: "response.compaction"` The object type. Always `response.compaction`. - `"response.compaction"` - `output: array of Message or object { id, call_id, code, 2 more } or object { id, call_id, result, 2 more } or 25 more` The compacted list of output items. - `Message object { id, content, role, 3 more }` A message to or from the model. - `id: string` The unique ID of the message. - `content: array of ResponseInputText or ResponseOutputText or TextContent or 6 more` The content of the message - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `TextContent object { text, type }` A text content. - `text: string` - `type: "text"` - `"text"` - `SummaryTextContent object { text, type }` A summary text from the model. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `ReasoningText object { text, type }` Reasoning text from the model. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ComputerScreenshotContent object { detail, file_id, image_url, 2 more }` A screenshot of a computer. - `detail: ImageDetail` The detail level of the screenshot image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: string or null` The identifier of an uploaded file that contains the screenshot. - `image_url: string or null` The URL of the screenshot image. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "unknown" or "user" or "assistant" or 5 more` The role of the message. One of `unknown`, `user`, `assistant`, `system`, `critic`, `discriminator`, `developer`, or `tool`. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `status: "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the message. Always set to `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `usage: ResponseUsage` Token accounting for the compaction pass, including cached, reasoning, and total tokens. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. ### Example ```http curl https://api.openai.com/v1/responses/compact \ -H 'Content-Type: application/json' \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.6-sol", "previous_response_id": "resp_123" }' ``` #### Response ```json { "id": "id", "created_at": 0, "object": "response.compaction", "output": [ { "id": "id", "content": [ { "text": "text", "type": "input_text", "prompt_cache_breakpoint": { "mode": "explicit" } } ], "role": "unknown", "status": "in_progress", "type": "message", "phase": "commentary" } ], "usage": { "input_tokens": 0, "input_tokens_details": { "cache_write_tokens": 0, "cached_tokens": 0 }, "output_tokens": 0, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 0, "compute_units": 0 } } ``` ### Example ```http curl -X POST https://api.openai.com/v1/responses/compact \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.1-codex-max", "input": [ { "role": "user", "content": "Create a simple landing page for a dog petting café." }, { "id": "msg_001", "type": "message", "status": "completed", "content": [ { "type": "output_text", "annotations": [], "logprobs": [], "text": "Below is a single file, ready-to-use landing page for a dog petting café:..." } ], "role": "assistant" } ] }' ``` #### Response ```json { "id": "resp_001", "object": "response.compaction", "created_at": 1764967971, "output": [ { "id": "msg_000", "type": "message", "status": "completed", "content": [ { "type": "input_text", "text": "Create a simple landing page for a dog petting cafe." } ], "role": "user" }, { "id": "cmp_001", "type": "compaction", "encrypted_content": "gAAAAABpM0Yj-...=" } ], "usage": { "input_tokens": 139, "input_tokens_details": { "cached_tokens": 0, "cache_write_tokens": 0 }, "output_tokens": 438, "output_tokens_details": { "reasoning_tokens": 64 }, "total_tokens": 577 } } ``` ## Create a model response **post** `/responses` Creates a model response. Provide [text](/docs/guides/text) or [image](/docs/guides/images) inputs to generate [text](/docs/guides/text) or [JSON](/docs/guides/structured-outputs) outputs. Have the model call your own [custom code](/docs/guides/function-calling) or use built-in [tools](/docs/guides/tools) like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search) to use your own data as input for the model's response. ### Body Parameters - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `context_management: optional array of object { type, compact_threshold } or null` Context management configuration for this request. - `type: string` The context management entry type. Currently only 'compaction' is supported. - `compact_threshold: optional number or null` Token threshold at which compaction should be triggered for this entry. - `conversation: optional string or ResponseConversationParam or null` The conversation that this response belongs to. Items from this conversation are prepended to `input_items` for this response request. Input items and output items from this response are automatically added to this conversation after this response completes. - `ConversationID = string` The unique ID of the conversation. - `ResponseConversationParam object { id }` The conversation that this response belongs to. - `id: string` The unique ID of the conversation. - `include: optional array of ResponseIncludable or null` Specify additional output data to include in the model response. Currently supported values are: - `web_search_call.action.sources`: Include the sources of the web search tool call. - `code_interpreter_call.outputs`: Includes the outputs of python code execution in code interpreter tool call items. - `computer_call_output.output.image_url`: Include image urls from the computer call output. - `file_search_call.results`: Include the search results of the file search tool call. - `message.input_image.image_url`: Include image urls from the input message. - `message.output_text.logprobs`: Include logprobs with assistant messages. - `reasoning.encrypted_content`: Includes an encrypted version of reasoning tokens in reasoning item outputs. This enables reasoning items to be used in multi-turn conversations when using the Responses API statelessly (like when the `store` parameter is set to `false`, or when an organization is enrolled in the zero data retention program). - `"file_search_call.results"` - `"web_search_call.results"` - `"web_search_call.action.sources"` - `"message.input_image.image_url"` - `"computer_call_output.output.image_url"` - `"code_interpreter_call.outputs"` - `"reasoning.encrypted_content"` - `"message.output_text.logprobs"` - `input: optional string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` Text, image, or file inputs to the model, used to generate a response. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Image inputs](/docs/guides/images) - [File inputs](/docs/guides/pdf-files) - [Conversation state](/docs/guides/conversation-state) - [Function calling](/docs/guides/function-calling) - `TextInput = string` A text input to the model, equivalent to a text input with the `user` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `instructions: optional string or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `metadata: optional Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: optional ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `moderation: optional object { model, policy } or null` Configuration for running moderation on the input and output of this response. - `model: string` The moderation model to use for moderated completions, e.g. 'omni-moderation-latest'. - `policy: optional object { input, output } or null` The policy to apply to moderated response input and output. - `input: optional object { mode } or null` The moderation policy for the response input. - `mode: "score" or "block"` - `"score"` - `"block"` - `output: optional object { mode } or null` The moderation policy for the response output. - `mode: "score" or "block"` - `"score"` - `"block"` - `parallel_tool_calls: optional boolean or null` Whether to allow the model to run tool calls in parallel. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` Options for prompt caching. Supported for `gpt-5.6` and later models. By default, OpenAI automatically chooses one implicit cache breakpoint. You can add explicit breakpoints to content blocks with `prompt_cache_breakpoint`. Each request can write up to four breakpoints. For cache matching, OpenAI considers up to the latest 80 breakpoints in the conversation, without a content-block lookback limit. Set `mode` to `explicit` to disable the implicit breakpoint. The `ttl` defaults to `30m`, which is currently the only supported value. See the [prompt caching guide](/docs/guides/prompt-caching) for current details. - `mode: optional "implicit" or "explicit"` Controls whether OpenAI automatically creates an implicit cache breakpoint. Defaults to `implicit`. With `implicit`, OpenAI creates one implicit breakpoint and writes up to the latest three explicit breakpoints in the request. With `explicit`, OpenAI does not create an implicit breakpoint and writes up to the latest four explicit breakpoints. If there are no explicit breakpoints, the request does not use prompt caching. - `"implicit"` - `"explicit"` - `ttl: optional "30m"` The minimum lifetime applied to every implicit and explicit cache breakpoint written by the request. Defaults to `30m`, which is currently the only supported value. The backend may retain cache entries for longer. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `store: optional boolean or null` Whether to store the generated model response for later retrieval via API. - `stream: optional boolean or null` If set to true, the model response data will be streamed to the client as it is generated using [server-sent events](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events#Event_stream_format). See the [Streaming section below](/docs/api-reference/responses-streaming) for more information. - `stream_options: optional object { include_obfuscation } or null` Options for streaming responses. Only set this when you set `stream: true`. - `include_obfuscation: optional boolean` When true, stream obfuscation will be enabled. Stream obfuscation adds random characters to an `obfuscation` field on streaming delta events to normalize payload sizes as a mitigation to certain side-channel attacks. These obfuscation fields are included by default, but add a small amount of overhead to the data stream. You can set `include_obfuscation` to false to optimize for bandwidth if you trust the network links between your application and the OpenAI API. - `temperature: optional number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `tool_choice: optional ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: optional array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `top_p: optional number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). ### Returns - `Response object { id, created_at, error, 32 more }` - `id: string` Unique identifier for this Response. - `created_at: number` Unix timestamp (in seconds) of when this Response was created. - `error: ResponseError or null` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. - `incomplete_details: object { reason } or null` Details about why the response is incomplete. - `reason: optional "max_output_tokens" or "content_filter"` The reason why the response is incomplete. - `"max_output_tokens"` - `"content_filter"` - `instructions: string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `string` A text input to the model, equivalent to a text input with the `developer` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `metadata: Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `object: "response"` The object type of this resource - always set to `response`. - `"response"` - `output: array of ResponseOutputItem` An array of content items generated by the model. - The length and order of items in the `output` array is dependent on the model's response. - Rather than accessing the first item in the `output` array and assuming it's an `assistant` message with the content generated by the model, you might consider using the `output_text` property where supported in SDKs. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `parallel_tool_calls: boolean` Whether to allow the model to run tool calls in parallel. - `temperature: number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `tool_choice: ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_p: number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `completed_at: optional number or null` Unix timestamp (in seconds) of when this Response was completed. Only present when the status is `completed`. - `conversation: optional object { id } or null` The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation. - `id: string` The unique ID of the conversation that this response was associated with. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `moderation: optional object { input, output } or null` Moderation results for the response input and output, if moderated completions were requested. - `input: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response input. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response output. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output_text: optional string or null` SDK-only convenience property that contains the aggregated text output from all `output_text` items in the `output` array, if any are present. Supported in the Python and JavaScript SDKs. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` The prompt-caching options that were applied to the response. Supported for `gpt-5.6` and later models. - `mode: "implicit" or "explicit"` Whether implicit prompt-cache breakpoints were enabled. - `"implicit"` - `"explicit"` - `ttl: "30m"` The minimum lifetime applied to each cache breakpoint. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `status: optional ResponseStatus` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `usage: optional ResponseUsage` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). ### Example ```http curl https://api.openai.com/v1/responses \ -H 'Content-Type: application/json' \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.1", "prompt_cache_key": "prompt-cache-key-1234", "safety_identifier": "safety-identifier-1234", "temperature": 1, "top_p": 1, "user": "user-1234" }' ``` #### Response ```json { "id": "id", "created_at": 0, "error": { "code": "server_error", "message": "message" }, "incomplete_details": { "reason": "max_output_tokens" }, "instructions": "string", "metadata": { "foo": "string" }, "model": "gpt-5.1", "object": "response", "output": [ { "id": "id", "content": [ { "annotations": [ { "file_id": "file_id", "filename": "filename", "index": 0, "type": "file_citation" } ], "logprobs": [ { "token": "token", "bytes": [ 0 ], "logprob": 0, "top_logprobs": [ { "token": "token", "bytes": [ 0 ], "logprob": 0 } ] } ], "text": "text", "type": "output_text" } ], "role": "assistant", "status": "in_progress", "type": "message", "phase": "commentary" } ], "parallel_tool_calls": true, "temperature": 1, "tool_choice": "none", "tools": [ { "name": "name", "parameters": { "foo": "bar" }, "strict": true, "type": "function", "allowed_callers": [ "direct" ], "defer_loading": true, "description": "description", "output_schema": { "foo": "bar" } } ], "top_p": 1, "background": true, "completed_at": 0, "conversation": { "id": "id" }, "max_output_tokens": 0, "max_tool_calls": 0, "moderation": { "input": { "categories": { "foo": true }, "category_applied_input_types": { "foo": [ "text" ] }, "category_scores": { "foo": 0 }, "flagged": true, "model": "model", "type": "moderation_result" }, "output": { "categories": { "foo": true }, "category_applied_input_types": { "foo": [ "text" ] }, "category_scores": { "foo": 0 }, "flagged": true, "model": "model", "type": "moderation_result" } }, "output_text": "output_text", "previous_response_id": "previous_response_id", "prompt": { "id": "id", "variables": { "foo": "string" }, "version": "version" }, "prompt_cache_key": "prompt-cache-key-1234", "prompt_cache_options": { "mode": "implicit", "ttl": "30m" }, "prompt_cache_retention": "in_memory", "reasoning": { "context": "auto", "effort": "none", "generate_summary": "auto", "mode": "standard", "summary": "auto" }, "safety_identifier": "safety-identifier-1234", "service_tier": "auto", "status": "completed", "text": { "format": { "type": "text" }, "verbosity": "low" }, "top_logprobs": 0, "truncation": "auto", "usage": { "input_tokens": 0, "input_tokens_details": { "cache_write_tokens": 0, "cached_tokens": 0 }, "output_tokens": 0, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 0, "compute_units": 0 }, "user": "user-1234" } ``` ### File input ```http curl https://api.openai.com/v1/responses \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.4", "input": [ { "role": "user", "content": [ {"type": "input_text", "text": "what is in this file?"}, { "type": "input_file", "file_url": "https://www.berkshirehathaway.com/letters/2024ltr.pdf", "detail": "auto" } ] } ] }' ``` #### Response ```json { "id": "resp_686eef60237881a2bd1180bb8b13de430e34c516d176ff86", "object": "response", "created_at": 1752100704, "status": "completed", "completed_at": 1752100705, "background": false, "error": null, "incomplete_details": null, "instructions": null, "max_output_tokens": null, "max_tool_calls": null, "model": "gpt-5.4", "output": [ { "id": "msg_686eef60d3e081a29283bdcbc4322fd90e34c516d176ff86", "type": "message", "status": "completed", "content": [ { "type": "output_text", "annotations": [], "logprobs": [], "text": "The file seems to contain excerpts from a letter to the shareholders of Berkshire Hathaway Inc., likely written by Warren Buffett. It covers several topics:\n\n1. **Communication Philosophy**: Buffett emphasizes the importance of transparency and candidness in reporting mistakes and successes to shareholders.\n\n2. **Mistakes and Learnings**: The letter acknowledges past mistakes in business assessments and management hires, highlighting the importance of correcting errors promptly.\n\n3. **CEO Succession**: Mention of Greg Abel stepping in as the new CEO and continuing the tradition of honest communication.\n\n4. **Pete Liegl Story**: A detailed account of acquiring Forest River and the relationship with its founder, highlighting trust and effective business decisions.\n\n5. **2024 Performance**: Overview of business performance, particularly in insurance and investment activities, with a focus on GEICO's improvement.\n\n6. **Tax Contributions**: Discussion of significant tax payments to the U.S. Treasury, credited to shareholders' reinvestments.\n\n7. **Investment Strategy**: A breakdown of Berkshire\u2019s investments in both controlled subsidiaries and marketable equities, along with a focus on long-term holding strategies.\n\n8. **American Capitalism**: Reflections on America\u2019s economic development and Berkshire\u2019s role within it.\n\n9. **Property-Casualty Insurance**: Insights into the P/C insurance business model and its challenges and benefits.\n\n10. **Japanese Investments**: Information about Berkshire\u2019s investments in Japanese companies and future plans.\n\n11. **Annual Meeting**: Details about the upcoming annual gathering in Omaha, including schedule changes and new book releases.\n\n12. **Personal Anecdotes**: Light-hearted stories about family and interactions, conveying Buffett's personable approach.\n\n13. **Financial Performance Data**: Tables comparing Berkshire\u2019s annual performance to the S&P 500, showing impressive long-term gains.\n\nOverall, the letter reinforces Berkshire Hathaway's commitment to transparency, investment in both its businesses and the wider economy, and emphasizes strong leadership and prudent financial management." } ], "role": "assistant" } ], "parallel_tool_calls": true, "previous_response_id": null, "reasoning": { "effort": null, "summary": null }, "service_tier": "default", "store": true, "temperature": 1.0, "text": { "format": { "type": "text" } }, "tool_choice": "auto", "tools": [], "top_logprobs": 0, "top_p": 1.0, "truncation": "disabled", "usage": { "input_tokens": 8438, "input_tokens_details": { "cached_tokens": 0, "cache_write_tokens": 0 }, "output_tokens": 398, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 8836 }, "user": null, "metadata": {} } ``` ### File search ```http curl https://api.openai.com/v1/responses \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.4", "tools": [{ "type": "file_search", "vector_store_ids": ["vs_1234567890"], "max_num_results": 20 }], "input": "What are the attributes of an ancient brown dragon?" }' ``` #### Response ```json { "id": "resp_67ccf4c55fc48190b71bd0463ad3306d09504fb6872380d7", "object": "response", "created_at": 1741485253, "status": "completed", "completed_at": 1741485254, "error": null, "incomplete_details": null, "instructions": null, "max_output_tokens": null, "model": "gpt-5.4", "output": [ { "type": "file_search_call", "id": "fs_67ccf4c63cd08190887ef6464ba5681609504fb6872380d7", "status": "completed", "queries": [ "attributes of an ancient brown dragon" ], "results": null }, { "type": "message", "id": "msg_67ccf4c93e5c81909d595b369351a9d309504fb6872380d7", "status": "completed", "role": "assistant", "content": [ { "type": "output_text", "text": "The attributes of an ancient brown dragon include...", "annotations": [ { "type": "file_citation", "index": 320, "file_id": "file-4wDz5b167pAf72nx1h9eiN", "filename": "dragons.pdf" }, { "type": "file_citation", "index": 576, "file_id": "file-4wDz5b167pAf72nx1h9eiN", "filename": "dragons.pdf" }, { "type": "file_citation", "index": 815, "file_id": "file-4wDz5b167pAf72nx1h9eiN", "filename": "dragons.pdf" }, { "type": "file_citation", "index": 815, "file_id": "file-4wDz5b167pAf72nx1h9eiN", "filename": "dragons.pdf" }, { "type": "file_citation", "index": 1030, "file_id": "file-4wDz5b167pAf72nx1h9eiN", "filename": "dragons.pdf" }, { "type": "file_citation", "index": 1030, "file_id": "file-4wDz5b167pAf72nx1h9eiN", "filename": "dragons.pdf" }, { "type": "file_citation", "index": 1156, "file_id": "file-4wDz5b167pAf72nx1h9eiN", "filename": "dragons.pdf" }, { "type": "file_citation", "index": 1225, "file_id": "file-4wDz5b167pAf72nx1h9eiN", "filename": "dragons.pdf" } ] } ] } ], "parallel_tool_calls": true, "previous_response_id": null, "reasoning": { "effort": null, "summary": null }, "store": true, "temperature": 1.0, "text": { "format": { "type": "text" } }, "tool_choice": "auto", "tools": [ { "type": "file_search", "filters": null, "max_num_results": 20, "ranking_options": { "ranker": "auto", "score_threshold": 0.0 }, "vector_store_ids": [ "vs_1234567890" ] } ], "top_p": 1.0, "truncation": "disabled", "usage": { "input_tokens": 18307, "input_tokens_details": { "cached_tokens": 0, "cache_write_tokens": 0 }, "output_tokens": 348, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 18655 }, "user": null, "metadata": {} } ``` ### Functions ```http curl https://api.openai.com/v1/responses \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.4", "input": "What is the weather like in Boston today?", "tools": [ { "type": "function", "name": "get_current_weather", "description": "Get the current weather in a given location", "parameters": { "type": "object", "properties": { "location": { "type": "string", "description": "The city and state, e.g. San Francisco, CA" }, "unit": { "type": "string", "enum": ["celsius", "fahrenheit"] } }, "required": ["location", "unit"] } } ], "tool_choice": "auto" }' ``` #### Response ```json { "id": "resp_67ca09c5efe0819096d0511c92b8c890096610f474011cc0", "object": "response", "created_at": 1741294021, "status": "completed", "completed_at": 1741294022, "error": null, "incomplete_details": null, "instructions": null, "max_output_tokens": null, "model": "gpt-5.4", "output": [ { "type": "function_call", "id": "fc_67ca09c6bedc8190a7abfec07b1a1332096610f474011cc0", "call_id": "call_unLAR8MvFNptuiZK6K6HCy5k", "name": "get_current_weather", "arguments": "{\"location\":\"Boston, MA\",\"unit\":\"celsius\"}", "status": "completed" } ], "parallel_tool_calls": true, "previous_response_id": null, "reasoning": { "effort": null, "summary": null }, "store": true, "temperature": 1.0, "text": { "format": { "type": "text" } }, "tool_choice": "auto", "tools": [ { "type": "function", "description": "Get the current weather in a given location", "name": "get_current_weather", "parameters": { "type": "object", "properties": { "location": { "type": "string", "description": "The city and state, e.g. San Francisco, CA" }, "unit": { "type": "string", "enum": [ "celsius", "fahrenheit" ] } }, "required": [ "location", "unit" ] }, "strict": true } ], "top_p": 1.0, "truncation": "disabled", "usage": { "input_tokens": 291, "output_tokens": 23, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 314 }, "user": null, "metadata": {} } ``` ### Image input ```http curl https://api.openai.com/v1/responses \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.4", "input": [ { "role": "user", "content": [ {"type": "input_text", "text": "what is in this image?"}, { "type": "input_image", "image_url": "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg" } ] } ] }' ``` #### Response ```json { "id": "resp_67ccd3a9da748190baa7f1570fe91ac604becb25c45c1d41", "object": "response", "created_at": 1741476777, "status": "completed", "completed_at": 1741476778, "error": null, "incomplete_details": null, "instructions": null, "max_output_tokens": null, "model": "gpt-5.4", "output": [ { "type": "message", "id": "msg_67ccd3acc8d48190a77525dc6de64b4104becb25c45c1d41", "status": "completed", "role": "assistant", "content": [ { "type": "output_text", "text": "The image depicts a scenic landscape with a wooden boardwalk or pathway leading through lush, green grass under a blue sky with some clouds. The setting suggests a peaceful natural area, possibly a park or nature reserve. There are trees and shrubs in the background.", "annotations": [] } ] } ], "parallel_tool_calls": true, "previous_response_id": null, "reasoning": { "effort": null, "summary": null }, "store": true, "temperature": 1.0, "text": { "format": { "type": "text" } }, "tool_choice": "auto", "tools": [], "top_p": 1.0, "truncation": "disabled", "usage": { "input_tokens": 328, "input_tokens_details": { "cached_tokens": 0, "cache_write_tokens": 0 }, "output_tokens": 52, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 380 }, "user": null, "metadata": {} } ``` ### Reasoning ```http curl https://api.openai.com/v1/responses \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "o3-mini", "input": "How much wood would a woodchuck chuck?", "reasoning": { "effort": "high" } }' ``` #### Response ```json { "id": "resp_67ccd7eca01881908ff0b5146584e408072912b2993db808", "object": "response", "created_at": 1741477868, "status": "completed", "completed_at": 1741477869, "error": null, "incomplete_details": null, "instructions": null, "max_output_tokens": null, "model": "o1-2024-12-17", "output": [ { "type": "message", "id": "msg_67ccd7f7b5848190a6f3e95d809f6b44072912b2993db808", "status": "completed", "role": "assistant", "content": [ { "type": "output_text", "text": "The classic tongue twister...", "annotations": [] } ] } ], "parallel_tool_calls": true, "previous_response_id": null, "reasoning": { "effort": "high", "summary": null }, "store": true, "temperature": 1.0, "text": { "format": { "type": "text" } }, "tool_choice": "auto", "tools": [], "top_p": 1.0, "truncation": "disabled", "usage": { "input_tokens": 81, "input_tokens_details": { "cached_tokens": 0, "cache_write_tokens": 0 }, "output_tokens": 1035, "output_tokens_details": { "reasoning_tokens": 832 }, "total_tokens": 1116 }, "user": null, "metadata": {} } ``` ### Streaming ```http curl https://api.openai.com/v1/responses \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.4", "instructions": "You are a helpful assistant.", "input": "Hello!", "stream": true }' ``` #### Response ```json event: response.created data: {"type":"response.created","response":{"id":"resp_67c9fdcecf488190bdd9a0409de3a1ec07b8b0ad4e5eb654","object":"response","created_at":1741290958,"status":"in_progress","error":null,"incomplete_details":null,"instructions":"You are a helpful assistant.","max_output_tokens":null,"model":"gpt-5.4","output":[],"parallel_tool_calls":true,"previous_response_id":null,"reasoning":{"effort":null,"summary":null},"store":true,"temperature":1.0,"text":{"format":{"type":"text"}},"tool_choice":"auto","tools":[],"top_p":1.0,"truncation":"disabled","usage":null,"user":null,"metadata":{}}} event: response.in_progress data: {"type":"response.in_progress","response":{"id":"resp_67c9fdcecf488190bdd9a0409de3a1ec07b8b0ad4e5eb654","object":"response","created_at":1741290958,"status":"in_progress","error":null,"incomplete_details":null,"instructions":"You are a helpful assistant.","max_output_tokens":null,"model":"gpt-5.4","output":[],"parallel_tool_calls":true,"previous_response_id":null,"reasoning":{"effort":null,"summary":null},"store":true,"temperature":1.0,"text":{"format":{"type":"text"}},"tool_choice":"auto","tools":[],"top_p":1.0,"truncation":"disabled","usage":null,"user":null,"metadata":{}}} event: response.output_item.added data: {"type":"response.output_item.added","output_index":0,"item":{"id":"msg_67c9fdcf37fc8190ba82116e33fb28c507b8b0ad4e5eb654","type":"message","status":"in_progress","role":"assistant","content":[]}} event: response.content_part.added data: {"type":"response.content_part.added","item_id":"msg_67c9fdcf37fc8190ba82116e33fb28c507b8b0ad4e5eb654","output_index":0,"content_index":0,"part":{"type":"output_text","text":"","annotations":[]}} event: response.output_text.delta data: {"type":"response.output_text.delta","item_id":"msg_67c9fdcf37fc8190ba82116e33fb28c507b8b0ad4e5eb654","output_index":0,"content_index":0,"delta":"Hi"} ... event: response.output_text.done data: {"type":"response.output_text.done","item_id":"msg_67c9fdcf37fc8190ba82116e33fb28c507b8b0ad4e5eb654","output_index":0,"content_index":0,"text":"Hi there! How can I assist you today?"} event: response.content_part.done data: {"type":"response.content_part.done","item_id":"msg_67c9fdcf37fc8190ba82116e33fb28c507b8b0ad4e5eb654","output_index":0,"content_index":0,"part":{"type":"output_text","text":"Hi there! How can I assist you today?","annotations":[]}} event: response.output_item.done data: {"type":"response.output_item.done","output_index":0,"item":{"id":"msg_67c9fdcf37fc8190ba82116e33fb28c507b8b0ad4e5eb654","type":"message","status":"completed","role":"assistant","content":[{"type":"output_text","text":"Hi there! How can I assist you today?","annotations":[]}]}} event: response.completed data: {"type":"response.completed","response":{"id":"resp_67c9fdcecf488190bdd9a0409de3a1ec07b8b0ad4e5eb654","object":"response","created_at":1741290958,"status":"completed","error":null,"incomplete_details":null,"instructions":"You are a helpful assistant.","max_output_tokens":null,"model":"gpt-5.4","output":[{"id":"msg_67c9fdcf37fc8190ba82116e33fb28c507b8b0ad4e5eb654","type":"message","status":"completed","role":"assistant","content":[{"type":"output_text","text":"Hi there! How can I assist you today?","annotations":[]}]}],"parallel_tool_calls":true,"previous_response_id":null,"reasoning":{"effort":null,"summary":null},"store":true,"temperature":1.0,"text":{"format":{"type":"text"}},"tool_choice":"auto","tools":[],"top_p":1.0,"truncation":"disabled","usage":{"input_tokens":37,"output_tokens":11,"output_tokens_details":{"reasoning_tokens":0},"total_tokens":48},"user":null,"metadata":{}}} ``` ### Text input ```http curl https://api.openai.com/v1/responses \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.4", "input": "Tell me a three sentence bedtime story about a unicorn." }' ``` #### Response ```json { "id": "resp_67ccd2bed1ec8190b14f964abc0542670bb6a6b452d3795b", "object": "response", "created_at": 1741476542, "status": "completed", "completed_at": 1741476543, "error": null, "incomplete_details": null, "instructions": null, "max_output_tokens": null, "model": "gpt-5.4", "output": [ { "type": "message", "id": "msg_67ccd2bf17f0819081ff3bb2cf6508e60bb6a6b452d3795b", "status": "completed", "role": "assistant", "content": [ { "type": "output_text", "text": "In a peaceful grove beneath a silver moon, a unicorn named Lumina discovered a hidden pool that reflected the stars. As she dipped her horn into the water, the pool began to shimmer, revealing a pathway to a magical realm of endless night skies. Filled with wonder, Lumina whispered a wish for all who dream to find their own hidden magic, and as she glanced back, her hoofprints sparkled like stardust.", "annotations": [] } ] } ], "parallel_tool_calls": true, "previous_response_id": null, "reasoning": { "effort": null, "summary": null }, "store": true, "temperature": 1.0, "text": { "format": { "type": "text" } }, "tool_choice": "auto", "tools": [], "top_p": 1.0, "truncation": "disabled", "usage": { "input_tokens": 36, "input_tokens_details": { "cached_tokens": 0, "cache_write_tokens": 0 }, "output_tokens": 87, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 123 }, "user": null, "metadata": {} } ``` ### Web search ```http curl https://api.openai.com/v1/responses \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5.4", "tools": [{ "type": "web_search_preview" }], "input": "What was a positive news story from today?" }' ``` #### Response ```json { "id": "resp_67ccf18ef5fc8190b16dbee19bc54e5f087bb177ab789d5c", "object": "response", "created_at": 1741484430, "status": "completed", "completed_at": 1741484431, "error": null, "incomplete_details": null, "instructions": null, "max_output_tokens": null, "model": "gpt-5.4", "output": [ { "type": "web_search_call", "id": "ws_67ccf18f64008190a39b619f4c8455ef087bb177ab789d5c", "status": "completed" }, { "type": "message", "id": "msg_67ccf190ca3881909d433c50b1f6357e087bb177ab789d5c", "status": "completed", "role": "assistant", "content": [ { "type": "output_text", "text": "As of today, March 9, 2025, one notable positive news story...", "annotations": [ { "type": "url_citation", "start_index": 442, "end_index": 557, "url": "https://.../?utm_source=chatgpt.com", "title": "..." }, { "type": "url_citation", "start_index": 962, "end_index": 1077, "url": "https://.../?utm_source=chatgpt.com", "title": "..." }, { "type": "url_citation", "start_index": 1336, "end_index": 1451, "url": "https://.../?utm_source=chatgpt.com", "title": "..." } ] } ] } ], "parallel_tool_calls": true, "previous_response_id": null, "reasoning": { "effort": null, "summary": null }, "store": true, "temperature": 1.0, "text": { "format": { "type": "text" } }, "tool_choice": "auto", "tools": [ { "type": "web_search_preview", "domains": [], "search_context_size": "medium", "user_location": { "type": "approximate", "city": null, "country": "US", "region": null, "timezone": null } } ], "top_p": 1.0, "truncation": "disabled", "usage": { "input_tokens": 328, "input_tokens_details": { "cached_tokens": 0, "cache_write_tokens": 0 }, "output_tokens": 356, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 684 }, "user": null, "metadata": {} } ``` ## Delete a model response **delete** `/responses/{response_id}` Deletes a model response with the given ID. ### Path Parameters - `response_id: string` ### Example ```http curl https://api.openai.com/v1/responses/$RESPONSE_ID \ -X DELETE \ -H "Authorization: Bearer $OPENAI_API_KEY" ``` ### Example ```http curl -X DELETE https://api.openai.com/v1/responses/resp_123 \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" ``` #### Response ```json { "id": "resp_6786a1bec27481909a17d673315b29f6", "object": "response", "deleted": true } ``` ## Get a model response **get** `/responses/{response_id}` Retrieves a model response with the given ID. ### Path Parameters - `response_id: string` ### Query Parameters - `include: optional array of ResponseIncludable` Additional fields to include in the response. See the `include` parameter for Response creation above for more information. - `"file_search_call.results"` - `"web_search_call.results"` - `"web_search_call.action.sources"` - `"message.input_image.image_url"` - `"computer_call_output.output.image_url"` - `"code_interpreter_call.outputs"` - `"reasoning.encrypted_content"` - `"message.output_text.logprobs"` - `include_obfuscation: optional boolean` When true, stream obfuscation will be enabled. Stream obfuscation adds random characters to an `obfuscation` field on streaming delta events to normalize payload sizes as a mitigation to certain side-channel attacks. These obfuscation fields are included by default, but add a small amount of overhead to the data stream. You can set `include_obfuscation` to false to optimize for bandwidth if you trust the network links between your application and the OpenAI API. - `starting_after: optional number` The sequence number of the event after which to start streaming. - `stream: optional false` If set to true, the model response data will be streamed to the client as it is generated using [server-sent events](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events#Event_stream_format). See the [Streaming section below](/docs/api-reference/responses-streaming) for more information. - `false` ### Returns - `Response object { id, created_at, error, 32 more }` - `id: string` Unique identifier for this Response. - `created_at: number` Unix timestamp (in seconds) of when this Response was created. - `error: ResponseError or null` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. - `incomplete_details: object { reason } or null` Details about why the response is incomplete. - `reason: optional "max_output_tokens" or "content_filter"` The reason why the response is incomplete. - `"max_output_tokens"` - `"content_filter"` - `instructions: string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `string` A text input to the model, equivalent to a text input with the `developer` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `metadata: Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `object: "response"` The object type of this resource - always set to `response`. - `"response"` - `output: array of ResponseOutputItem` An array of content items generated by the model. - The length and order of items in the `output` array is dependent on the model's response. - Rather than accessing the first item in the `output` array and assuming it's an `assistant` message with the content generated by the model, you might consider using the `output_text` property where supported in SDKs. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `parallel_tool_calls: boolean` Whether to allow the model to run tool calls in parallel. - `temperature: number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `tool_choice: ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_p: number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `completed_at: optional number or null` Unix timestamp (in seconds) of when this Response was completed. Only present when the status is `completed`. - `conversation: optional object { id } or null` The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation. - `id: string` The unique ID of the conversation that this response was associated with. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `moderation: optional object { input, output } or null` Moderation results for the response input and output, if moderated completions were requested. - `input: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response input. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response output. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output_text: optional string or null` SDK-only convenience property that contains the aggregated text output from all `output_text` items in the `output` array, if any are present. Supported in the Python and JavaScript SDKs. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` The prompt-caching options that were applied to the response. Supported for `gpt-5.6` and later models. - `mode: "implicit" or "explicit"` Whether implicit prompt-cache breakpoints were enabled. - `"implicit"` - `"explicit"` - `ttl: "30m"` The minimum lifetime applied to each cache breakpoint. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `status: optional ResponseStatus` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `usage: optional ResponseUsage` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). ### Example ```http curl https://api.openai.com/v1/responses/$RESPONSE_ID \ -H "Authorization: Bearer $OPENAI_API_KEY" ``` #### Response ```json { "id": "id", "created_at": 0, "error": { "code": "server_error", "message": "message" }, "incomplete_details": { "reason": "max_output_tokens" }, "instructions": "string", "metadata": { "foo": "string" }, "model": "gpt-5.1", "object": "response", "output": [ { "id": "id", "content": [ { "annotations": [ { "file_id": "file_id", "filename": "filename", "index": 0, "type": "file_citation" } ], "logprobs": [ { "token": "token", "bytes": [ 0 ], "logprob": 0, "top_logprobs": [ { "token": "token", "bytes": [ 0 ], "logprob": 0 } ] } ], "text": "text", "type": "output_text" } ], "role": "assistant", "status": "in_progress", "type": "message", "phase": "commentary" } ], "parallel_tool_calls": true, "temperature": 1, "tool_choice": "none", "tools": [ { "name": "name", "parameters": { "foo": "bar" }, "strict": true, "type": "function", "allowed_callers": [ "direct" ], "defer_loading": true, "description": "description", "output_schema": { "foo": "bar" } } ], "top_p": 1, "background": true, "completed_at": 0, "conversation": { "id": "id" }, "max_output_tokens": 0, "max_tool_calls": 0, "moderation": { "input": { "categories": { "foo": true }, "category_applied_input_types": { "foo": [ "text" ] }, "category_scores": { "foo": 0 }, "flagged": true, "model": "model", "type": "moderation_result" }, "output": { "categories": { "foo": true }, "category_applied_input_types": { "foo": [ "text" ] }, "category_scores": { "foo": 0 }, "flagged": true, "model": "model", "type": "moderation_result" } }, "output_text": "output_text", "previous_response_id": "previous_response_id", "prompt": { "id": "id", "variables": { "foo": "string" }, "version": "version" }, "prompt_cache_key": "prompt-cache-key-1234", "prompt_cache_options": { "mode": "implicit", "ttl": "30m" }, "prompt_cache_retention": "in_memory", "reasoning": { "context": "auto", "effort": "none", "generate_summary": "auto", "mode": "standard", "summary": "auto" }, "safety_identifier": "safety-identifier-1234", "service_tier": "auto", "status": "completed", "text": { "format": { "type": "text" }, "verbosity": "low" }, "top_logprobs": 0, "truncation": "auto", "usage": { "input_tokens": 0, "input_tokens_details": { "cache_write_tokens": 0, "cached_tokens": 0 }, "output_tokens": 0, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 0, "compute_units": 0 }, "user": "user-1234" } ``` ### Example ```http curl https://api.openai.com/v1/responses/resp_123 \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" ``` #### Response ```json { "id": "resp_67cb71b351908190a308f3859487620d06981a8637e6bc44", "object": "response", "created_at": 1741386163, "status": "completed", "completed_at": 1741386164, "error": null, "incomplete_details": null, "instructions": null, "max_output_tokens": null, "model": "gpt-4o-2024-08-06", "output": [ { "type": "message", "id": "msg_67cb71b3c2b0819084d481baaaf148f206981a8637e6bc44", "status": "completed", "role": "assistant", "content": [ { "type": "output_text", "text": "Silent circuits hum, \nThoughts emerge in data streams— \nDigital dawn breaks.", "annotations": [] } ] } ], "parallel_tool_calls": true, "previous_response_id": null, "reasoning": { "effort": null, "summary": null }, "store": true, "temperature": 1.0, "text": { "format": { "type": "text" } }, "tool_choice": "auto", "tools": [], "top_p": 1.0, "truncation": "disabled", "usage": { "input_tokens": 32, "input_tokens_details": { "cached_tokens": 0, "cache_write_tokens": 0 }, "output_tokens": 18, "output_tokens_details": { "reasoning_tokens": 0 }, "total_tokens": 50 }, "user": null, "metadata": {} } ``` ## Domain Types ### Compacted Response - `CompactedResponse object { id, created_at, object, 2 more }` - `id: string` The unique identifier for the compacted response. - `created_at: number` Unix timestamp (in seconds) when the compacted conversation was created. - `object: "response.compaction"` The object type. Always `response.compaction`. - `"response.compaction"` - `output: array of Message or object { id, call_id, code, 2 more } or object { id, call_id, result, 2 more } or 25 more` The compacted list of output items. - `Message object { id, content, role, 3 more }` A message to or from the model. - `id: string` The unique ID of the message. - `content: array of ResponseInputText or ResponseOutputText or TextContent or 6 more` The content of the message - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `TextContent object { text, type }` A text content. - `text: string` - `type: "text"` - `"text"` - `SummaryTextContent object { text, type }` A summary text from the model. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `ReasoningText object { text, type }` Reasoning text from the model. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ComputerScreenshotContent object { detail, file_id, image_url, 2 more }` A screenshot of a computer. - `detail: ImageDetail` The detail level of the screenshot image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: string or null` The identifier of an uploaded file that contains the screenshot. - `image_url: string or null` The URL of the screenshot image. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "unknown" or "user" or "assistant" or 5 more` The role of the message. One of `unknown`, `user`, `assistant`, `system`, `critic`, `discriminator`, `developer`, or `tool`. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `status: "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the message. Always set to `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `usage: ResponseUsage` Token accounting for the compaction pass, including cached, reasoning, and total tokens. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. ### Computer Action - `ComputerAction = object { button, type, x, 2 more } or object { keys, type, x, y } or object { path, type, keys } or 6 more` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` ### Computer Action List - `ComputerActionList = array of ComputerAction` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` ### Container Auto - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` ### Container Network Policy Allowlist - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. ### Container Network Policy Disabled - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` ### Container Network Policy Domain Secret - `ContainerNetworkPolicyDomainSecret object { domain, name, value }` - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. ### Container Reference - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` ### Easy Input Message - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` ### Image Detail - `ImageDetail = "low" or "high" or "auto" or "original"` - `"low"` - `"high"` - `"auto"` - `"original"` ### Inline Skill - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` ### Inline Skill Source - `InlineSkillSource object { data, media_type, type }` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` ### Local Environment - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. ### Local Skill - `LocalSkill object { description, name, path }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. ### Mcp Tool Call Error - `McpToolCallError = object { code, message, type } or object { content, type } or object { code, message, type }` - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` ### Response - `Response object { id, created_at, error, 32 more }` - `id: string` Unique identifier for this Response. - `created_at: number` Unix timestamp (in seconds) of when this Response was created. - `error: ResponseError or null` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. - `incomplete_details: object { reason } or null` Details about why the response is incomplete. - `reason: optional "max_output_tokens" or "content_filter"` The reason why the response is incomplete. - `"max_output_tokens"` - `"content_filter"` - `instructions: string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `string` A text input to the model, equivalent to a text input with the `developer` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `metadata: Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `object: "response"` The object type of this resource - always set to `response`. - `"response"` - `output: array of ResponseOutputItem` An array of content items generated by the model. - The length and order of items in the `output` array is dependent on the model's response. - Rather than accessing the first item in the `output` array and assuming it's an `assistant` message with the content generated by the model, you might consider using the `output_text` property where supported in SDKs. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `parallel_tool_calls: boolean` Whether to allow the model to run tool calls in parallel. - `temperature: number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `tool_choice: ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_p: number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `completed_at: optional number or null` Unix timestamp (in seconds) of when this Response was completed. Only present when the status is `completed`. - `conversation: optional object { id } or null` The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation. - `id: string` The unique ID of the conversation that this response was associated with. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `moderation: optional object { input, output } or null` Moderation results for the response input and output, if moderated completions were requested. - `input: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response input. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response output. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output_text: optional string or null` SDK-only convenience property that contains the aggregated text output from all `output_text` items in the `output` array, if any are present. Supported in the Python and JavaScript SDKs. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` The prompt-caching options that were applied to the response. Supported for `gpt-5.6` and later models. - `mode: "implicit" or "explicit"` Whether implicit prompt-cache breakpoints were enabled. - `"implicit"` - `"explicit"` - `ttl: "30m"` The minimum lifetime applied to each cache breakpoint. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `status: optional ResponseStatus` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `usage: optional ResponseUsage` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). ### Response Audio Delta Event - `ResponseAudioDeltaEvent object { delta, sequence_number, type }` Emitted when there is a partial audio response. - `delta: string` A chunk of Base64 encoded response audio bytes. - `sequence_number: number` A sequence number for this chunk of the stream response. - `type: "response.audio.delta"` The type of the event. Always `response.audio.delta`. - `"response.audio.delta"` ### Response Audio Done Event - `ResponseAudioDoneEvent object { sequence_number, type }` Emitted when the audio response is complete. - `sequence_number: number` The sequence number of the delta. - `type: "response.audio.done"` The type of the event. Always `response.audio.done`. - `"response.audio.done"` ### Response Audio Transcript Delta Event - `ResponseAudioTranscriptDeltaEvent object { delta, sequence_number, type }` Emitted when there is a partial transcript of audio. - `delta: string` The partial transcript of the audio response. - `sequence_number: number` The sequence number of this event. - `type: "response.audio.transcript.delta"` The type of the event. Always `response.audio.transcript.delta`. - `"response.audio.transcript.delta"` ### Response Audio Transcript Done Event - `ResponseAudioTranscriptDoneEvent object { sequence_number, type }` Emitted when the full audio transcript is completed. - `sequence_number: number` The sequence number of this event. - `type: "response.audio.transcript.done"` The type of the event. Always `response.audio.transcript.done`. - `"response.audio.transcript.done"` ### Response Code Interpreter Call Code Delta Event - `ResponseCodeInterpreterCallCodeDeltaEvent object { delta, item_id, output_index, 2 more }` Emitted when a partial code snippet is streamed by the code interpreter. - `delta: string` The partial code snippet being streamed by the code interpreter. - `item_id: string` The unique identifier of the code interpreter tool call item. - `output_index: number` The index of the output item in the response for which the code is being streamed. - `sequence_number: number` The sequence number of this event, used to order streaming events. - `type: "response.code_interpreter_call_code.delta"` The type of the event. Always `response.code_interpreter_call_code.delta`. - `"response.code_interpreter_call_code.delta"` ### Response Code Interpreter Call Code Done Event - `ResponseCodeInterpreterCallCodeDoneEvent object { code, item_id, output_index, 2 more }` Emitted when the code snippet is finalized by the code interpreter. - `code: string` The final code snippet output by the code interpreter. - `item_id: string` The unique identifier of the code interpreter tool call item. - `output_index: number` The index of the output item in the response for which the code is finalized. - `sequence_number: number` The sequence number of this event, used to order streaming events. - `type: "response.code_interpreter_call_code.done"` The type of the event. Always `response.code_interpreter_call_code.done`. - `"response.code_interpreter_call_code.done"` ### Response Code Interpreter Call Completed Event - `ResponseCodeInterpreterCallCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when the code interpreter call is completed. - `item_id: string` The unique identifier of the code interpreter tool call item. - `output_index: number` The index of the output item in the response for which the code interpreter call is completed. - `sequence_number: number` The sequence number of this event, used to order streaming events. - `type: "response.code_interpreter_call.completed"` The type of the event. Always `response.code_interpreter_call.completed`. - `"response.code_interpreter_call.completed"` ### Response Code Interpreter Call In Progress Event - `ResponseCodeInterpreterCallInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when a code interpreter call is in progress. - `item_id: string` The unique identifier of the code interpreter tool call item. - `output_index: number` The index of the output item in the response for which the code interpreter call is in progress. - `sequence_number: number` The sequence number of this event, used to order streaming events. - `type: "response.code_interpreter_call.in_progress"` The type of the event. Always `response.code_interpreter_call.in_progress`. - `"response.code_interpreter_call.in_progress"` ### Response Code Interpreter Call Interpreting Event - `ResponseCodeInterpreterCallInterpretingEvent object { item_id, output_index, sequence_number, type }` Emitted when the code interpreter is actively interpreting the code snippet. - `item_id: string` The unique identifier of the code interpreter tool call item. - `output_index: number` The index of the output item in the response for which the code interpreter is interpreting code. - `sequence_number: number` The sequence number of this event, used to order streaming events. - `type: "response.code_interpreter_call.interpreting"` The type of the event. Always `response.code_interpreter_call.interpreting`. - `"response.code_interpreter_call.interpreting"` ### Response Completed Event - `ResponseCompletedEvent object { response, sequence_number, type }` Emitted when the model response is complete. - `response: Response` Properties of the completed response. - `id: string` Unique identifier for this Response. - `created_at: number` Unix timestamp (in seconds) of when this Response was created. - `error: ResponseError or null` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. - `incomplete_details: object { reason } or null` Details about why the response is incomplete. - `reason: optional "max_output_tokens" or "content_filter"` The reason why the response is incomplete. - `"max_output_tokens"` - `"content_filter"` - `instructions: string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `string` A text input to the model, equivalent to a text input with the `developer` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `metadata: Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `object: "response"` The object type of this resource - always set to `response`. - `"response"` - `output: array of ResponseOutputItem` An array of content items generated by the model. - The length and order of items in the `output` array is dependent on the model's response. - Rather than accessing the first item in the `output` array and assuming it's an `assistant` message with the content generated by the model, you might consider using the `output_text` property where supported in SDKs. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `parallel_tool_calls: boolean` Whether to allow the model to run tool calls in parallel. - `temperature: number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `tool_choice: ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_p: number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `completed_at: optional number or null` Unix timestamp (in seconds) of when this Response was completed. Only present when the status is `completed`. - `conversation: optional object { id } or null` The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation. - `id: string` The unique ID of the conversation that this response was associated with. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `moderation: optional object { input, output } or null` Moderation results for the response input and output, if moderated completions were requested. - `input: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response input. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response output. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output_text: optional string or null` SDK-only convenience property that contains the aggregated text output from all `output_text` items in the `output` array, if any are present. Supported in the Python and JavaScript SDKs. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` The prompt-caching options that were applied to the response. Supported for `gpt-5.6` and later models. - `mode: "implicit" or "explicit"` Whether implicit prompt-cache breakpoints were enabled. - `"implicit"` - `"explicit"` - `ttl: "30m"` The minimum lifetime applied to each cache breakpoint. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `status: optional ResponseStatus` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `usage: optional ResponseUsage` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `sequence_number: number` The sequence number for this event. - `type: "response.completed"` The type of the event. Always `response.completed`. - `"response.completed"` ### Response Computer Tool Call Output Screenshot - `ResponseComputerToolCallOutputScreenshot object { type, file_id, image_url }` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. ### Response Container Reference - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` ### Response Content - `ResponseContent = ResponseInputText or ResponseInputImage or ResponseInputFile or 3 more` Multi-modal input and output contents. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `ReasoningText object { text, type }` Reasoning text from the model. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` ### Response Content Part Added Event - `ResponseContentPartAddedEvent object { content_index, item_id, output_index, 3 more }` Emitted when a new content part is added. - `content_index: number` The index of the content part that was added. - `item_id: string` The ID of the output item that the content part was added to. - `output_index: number` The index of the output item that the content part was added to. - `part: ResponseOutputText or ResponseOutputRefusal or object { text, type }` The content part that was added. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `ReasoningText object { text, type }` Reasoning text from the model. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `sequence_number: number` The sequence number of this event. - `type: "response.content_part.added"` The type of the event. Always `response.content_part.added`. - `"response.content_part.added"` ### Response Content Part Done Event - `ResponseContentPartDoneEvent object { content_index, item_id, output_index, 3 more }` Emitted when a content part is done. - `content_index: number` The index of the content part that is done. - `item_id: string` The ID of the output item that the content part was added to. - `output_index: number` The index of the output item that the content part was added to. - `part: ResponseOutputText or ResponseOutputRefusal or object { text, type }` The content part that is done. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `ReasoningText object { text, type }` Reasoning text from the model. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `sequence_number: number` The sequence number of this event. - `type: "response.content_part.done"` The type of the event. Always `response.content_part.done`. - `"response.content_part.done"` ### Response Conversation Param - `ResponseConversationParam object { id }` The conversation that this response belongs to. - `id: string` The unique ID of the conversation. ### Response Created Event - `ResponseCreatedEvent object { response, sequence_number, type }` An event that is emitted when a response is created. - `response: Response` The response that was created. - `id: string` Unique identifier for this Response. - `created_at: number` Unix timestamp (in seconds) of when this Response was created. - `error: ResponseError or null` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. - `incomplete_details: object { reason } or null` Details about why the response is incomplete. - `reason: optional "max_output_tokens" or "content_filter"` The reason why the response is incomplete. - `"max_output_tokens"` - `"content_filter"` - `instructions: string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `string` A text input to the model, equivalent to a text input with the `developer` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `metadata: Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `object: "response"` The object type of this resource - always set to `response`. - `"response"` - `output: array of ResponseOutputItem` An array of content items generated by the model. - The length and order of items in the `output` array is dependent on the model's response. - Rather than accessing the first item in the `output` array and assuming it's an `assistant` message with the content generated by the model, you might consider using the `output_text` property where supported in SDKs. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `parallel_tool_calls: boolean` Whether to allow the model to run tool calls in parallel. - `temperature: number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `tool_choice: ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_p: number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `completed_at: optional number or null` Unix timestamp (in seconds) of when this Response was completed. Only present when the status is `completed`. - `conversation: optional object { id } or null` The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation. - `id: string` The unique ID of the conversation that this response was associated with. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `moderation: optional object { input, output } or null` Moderation results for the response input and output, if moderated completions were requested. - `input: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response input. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response output. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output_text: optional string or null` SDK-only convenience property that contains the aggregated text output from all `output_text` items in the `output` array, if any are present. Supported in the Python and JavaScript SDKs. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` The prompt-caching options that were applied to the response. Supported for `gpt-5.6` and later models. - `mode: "implicit" or "explicit"` Whether implicit prompt-cache breakpoints were enabled. - `"implicit"` - `"explicit"` - `ttl: "30m"` The minimum lifetime applied to each cache breakpoint. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `status: optional ResponseStatus` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `usage: optional ResponseUsage` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `sequence_number: number` The sequence number for this event. - `type: "response.created"` The type of the event. Always `response.created`. - `"response.created"` ### Response Custom Tool Call Input Delta Event - `ResponseCustomToolCallInputDeltaEvent object { delta, item_id, output_index, 2 more }` Event representing a delta (partial update) to the input of a custom tool call. - `delta: string` The incremental input data (delta) for the custom tool call. - `item_id: string` Unique identifier for the API item associated with this event. - `output_index: number` The index of the output this delta applies to. - `sequence_number: number` The sequence number of this event. - `type: "response.custom_tool_call_input.delta"` The event type identifier. - `"response.custom_tool_call_input.delta"` ### Response Custom Tool Call Input Done Event - `ResponseCustomToolCallInputDoneEvent object { input, item_id, output_index, 2 more }` Event indicating that input for a custom tool call is complete. - `input: string` The complete input data for the custom tool call. - `item_id: string` Unique identifier for the API item associated with this event. - `output_index: number` The index of the output this event applies to. - `sequence_number: number` The sequence number of this event. - `type: "response.custom_tool_call_input.done"` The event type identifier. - `"response.custom_tool_call_input.done"` ### Response Error - `ResponseError object { code, message }` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. ### Response Error Event - `ResponseErrorEvent object { code, message, param, 2 more }` Emitted when an error occurs. - `code: string or null` The error code. - `message: string` The error message. - `param: string or null` The error parameter. - `sequence_number: number` The sequence number of this event. - `type: "error"` The type of the event. Always `error`. - `"error"` ### Response Failed Event - `ResponseFailedEvent object { response, sequence_number, type }` An event that is emitted when a response fails. - `response: Response` The response that failed. - `id: string` Unique identifier for this Response. - `created_at: number` Unix timestamp (in seconds) of when this Response was created. - `error: ResponseError or null` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. - `incomplete_details: object { reason } or null` Details about why the response is incomplete. - `reason: optional "max_output_tokens" or "content_filter"` The reason why the response is incomplete. - `"max_output_tokens"` - `"content_filter"` - `instructions: string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `string` A text input to the model, equivalent to a text input with the `developer` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `metadata: Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `object: "response"` The object type of this resource - always set to `response`. - `"response"` - `output: array of ResponseOutputItem` An array of content items generated by the model. - The length and order of items in the `output` array is dependent on the model's response. - Rather than accessing the first item in the `output` array and assuming it's an `assistant` message with the content generated by the model, you might consider using the `output_text` property where supported in SDKs. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `parallel_tool_calls: boolean` Whether to allow the model to run tool calls in parallel. - `temperature: number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `tool_choice: ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_p: number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `completed_at: optional number or null` Unix timestamp (in seconds) of when this Response was completed. Only present when the status is `completed`. - `conversation: optional object { id } or null` The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation. - `id: string` The unique ID of the conversation that this response was associated with. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `moderation: optional object { input, output } or null` Moderation results for the response input and output, if moderated completions were requested. - `input: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response input. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response output. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output_text: optional string or null` SDK-only convenience property that contains the aggregated text output from all `output_text` items in the `output` array, if any are present. Supported in the Python and JavaScript SDKs. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` The prompt-caching options that were applied to the response. Supported for `gpt-5.6` and later models. - `mode: "implicit" or "explicit"` Whether implicit prompt-cache breakpoints were enabled. - `"implicit"` - `"explicit"` - `ttl: "30m"` The minimum lifetime applied to each cache breakpoint. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `status: optional ResponseStatus` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `usage: optional ResponseUsage` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `sequence_number: number` The sequence number of this event. - `type: "response.failed"` The type of the event. Always `response.failed`. - `"response.failed"` ### Response File Search Call Completed Event - `ResponseFileSearchCallCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when a file search call is completed (results found). - `item_id: string` The ID of the output item that the file search call is initiated. - `output_index: number` The index of the output item that the file search call is initiated. - `sequence_number: number` The sequence number of this event. - `type: "response.file_search_call.completed"` The type of the event. Always `response.file_search_call.completed`. - `"response.file_search_call.completed"` ### Response File Search Call In Progress Event - `ResponseFileSearchCallInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when a file search call is initiated. - `item_id: string` The ID of the output item that the file search call is initiated. - `output_index: number` The index of the output item that the file search call is initiated. - `sequence_number: number` The sequence number of this event. - `type: "response.file_search_call.in_progress"` The type of the event. Always `response.file_search_call.in_progress`. - `"response.file_search_call.in_progress"` ### Response File Search Call Searching Event - `ResponseFileSearchCallSearchingEvent object { item_id, output_index, sequence_number, type }` Emitted when a file search is currently searching. - `item_id: string` The ID of the output item that the file search call is initiated. - `output_index: number` The index of the output item that the file search call is searching. - `sequence_number: number` The sequence number of this event. - `type: "response.file_search_call.searching"` The type of the event. Always `response.file_search_call.searching`. - `"response.file_search_call.searching"` ### Response Format Text Config - `ResponseFormatTextConfig = ResponseFormatText or ResponseFormatTextJSONSchemaConfig or ResponseFormatJSONObject` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` ### Response Format Text JSON Schema Config - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). ### Response Function Call Arguments Delta Event - `ResponseFunctionCallArgumentsDeltaEvent object { delta, item_id, output_index, 2 more }` Emitted when there is a partial function-call arguments delta. - `delta: string` The function-call arguments delta that is added. - `item_id: string` The ID of the output item that the function-call arguments delta is added to. - `output_index: number` The index of the output item that the function-call arguments delta is added to. - `sequence_number: number` The sequence number of this event. - `type: "response.function_call_arguments.delta"` The type of the event. Always `response.function_call_arguments.delta`. - `"response.function_call_arguments.delta"` ### Response Function Call Arguments Done Event - `ResponseFunctionCallArgumentsDoneEvent object { arguments, item_id, name, 3 more }` Emitted when function-call arguments are finalized. - `arguments: string` The function-call arguments. - `item_id: string` The ID of the item. - `name: string` The name of the function that was called. - `output_index: number` The index of the output item. - `sequence_number: number` The sequence number of this event. - `type: "response.function_call_arguments.done"` - `"response.function_call_arguments.done"` ### Response Function Shell Call Output Content - `ResponseFunctionShellCallOutputContent object { outcome, stderr, stdout }` Captured stdout and stderr for a portion of a shell tool call output. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. ### Response Image Gen Call Completed Event - `ResponseImageGenCallCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when an image generation tool call has completed and the final image is available. - `item_id: string` The unique identifier of the image generation item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of this event. - `type: "response.image_generation_call.completed"` The type of the event. Always 'response.image_generation_call.completed'. - `"response.image_generation_call.completed"` ### Response Image Gen Call Generating Event - `ResponseImageGenCallGeneratingEvent object { item_id, output_index, sequence_number, type }` Emitted when an image generation tool call is actively generating an image (intermediate state). - `item_id: string` The unique identifier of the image generation item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of the image generation item being processed. - `type: "response.image_generation_call.generating"` The type of the event. Always 'response.image_generation_call.generating'. - `"response.image_generation_call.generating"` ### Response Image Gen Call In Progress Event - `ResponseImageGenCallInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when an image generation tool call is in progress. - `item_id: string` The unique identifier of the image generation item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of the image generation item being processed. - `type: "response.image_generation_call.in_progress"` The type of the event. Always 'response.image_generation_call.in_progress'. - `"response.image_generation_call.in_progress"` ### Response Image Gen Call Partial Image Event - `ResponseImageGenCallPartialImageEvent object { item_id, output_index, partial_image_b64, 7 more }` Emitted when a partial image is available during image generation streaming. - `item_id: string` The unique identifier of the image generation item being processed. - `output_index: number` The index of the output item in the response's output array. - `partial_image_b64: string` Base64-encoded partial image data, suitable for rendering as an image. - `partial_image_index: number` 0-based index for the partial image (backend is 1-based, but this is 0-based for the user). - `sequence_number: number` The sequence number of the image generation item being processed. - `type: "response.image_generation_call.partial_image"` The type of the event. Always 'response.image_generation_call.partial_image'. - `"response.image_generation_call.partial_image"` - `background: optional string` The background setting that was used. - `output_format: optional string` The output format that was used. - `quality: optional string` The image quality that was used. - `size: optional string` The image size that was used. ### Response In Progress Event - `ResponseInProgressEvent object { response, sequence_number, type }` Emitted when the response is in progress. - `response: Response` The response that is in progress. - `id: string` Unique identifier for this Response. - `created_at: number` Unix timestamp (in seconds) of when this Response was created. - `error: ResponseError or null` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. - `incomplete_details: object { reason } or null` Details about why the response is incomplete. - `reason: optional "max_output_tokens" or "content_filter"` The reason why the response is incomplete. - `"max_output_tokens"` - `"content_filter"` - `instructions: string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `string` A text input to the model, equivalent to a text input with the `developer` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `metadata: Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `object: "response"` The object type of this resource - always set to `response`. - `"response"` - `output: array of ResponseOutputItem` An array of content items generated by the model. - The length and order of items in the `output` array is dependent on the model's response. - Rather than accessing the first item in the `output` array and assuming it's an `assistant` message with the content generated by the model, you might consider using the `output_text` property where supported in SDKs. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `parallel_tool_calls: boolean` Whether to allow the model to run tool calls in parallel. - `temperature: number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `tool_choice: ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_p: number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `completed_at: optional number or null` Unix timestamp (in seconds) of when this Response was completed. Only present when the status is `completed`. - `conversation: optional object { id } or null` The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation. - `id: string` The unique ID of the conversation that this response was associated with. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `moderation: optional object { input, output } or null` Moderation results for the response input and output, if moderated completions were requested. - `input: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response input. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response output. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output_text: optional string or null` SDK-only convenience property that contains the aggregated text output from all `output_text` items in the `output` array, if any are present. Supported in the Python and JavaScript SDKs. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` The prompt-caching options that were applied to the response. Supported for `gpt-5.6` and later models. - `mode: "implicit" or "explicit"` Whether implicit prompt-cache breakpoints were enabled. - `"implicit"` - `"explicit"` - `ttl: "30m"` The minimum lifetime applied to each cache breakpoint. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `status: optional ResponseStatus` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `usage: optional ResponseUsage` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `sequence_number: number` The sequence number of this event. - `type: "response.in_progress"` The type of the event. Always `response.in_progress`. - `"response.in_progress"` ### Response Includable - `ResponseIncludable = "file_search_call.results" or "web_search_call.results" or "web_search_call.action.sources" or 5 more` Specify additional output data to include in the model response. Currently supported values are: - `web_search_call.results`: Include the search results of the web search tool call. - `web_search_call.action.sources`: Include the sources of the web search tool call. - `code_interpreter_call.outputs`: Includes the outputs of python code execution in code interpreter tool call items. - `computer_call_output.output.image_url`: Include image urls from the computer call output. - `file_search_call.results`: Include the search results of the file search tool call. - `message.input_image.image_url`: Include image urls from the input message. - `message.output_text.logprobs`: Include logprobs with assistant messages. - `reasoning.encrypted_content`: Includes an encrypted version of reasoning tokens in reasoning item outputs. This enables reasoning items to be used in multi-turn conversations when using the Responses API statelessly (like when the `store` parameter is set to `false`, or when an organization is enrolled in the zero data retention program). - `"file_search_call.results"` - `"web_search_call.results"` - `"web_search_call.action.sources"` - `"message.input_image.image_url"` - `"computer_call_output.output.image_url"` - `"code_interpreter_call.outputs"` - `"reasoning.encrypted_content"` - `"message.output_text.logprobs"` ### Response Incomplete Event - `ResponseIncompleteEvent object { response, sequence_number, type }` An event that is emitted when a response finishes as incomplete. - `response: Response` The response that was incomplete. - `id: string` Unique identifier for this Response. - `created_at: number` Unix timestamp (in seconds) of when this Response was created. - `error: ResponseError or null` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. - `incomplete_details: object { reason } or null` Details about why the response is incomplete. - `reason: optional "max_output_tokens" or "content_filter"` The reason why the response is incomplete. - `"max_output_tokens"` - `"content_filter"` - `instructions: string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `string` A text input to the model, equivalent to a text input with the `developer` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `metadata: Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `object: "response"` The object type of this resource - always set to `response`. - `"response"` - `output: array of ResponseOutputItem` An array of content items generated by the model. - The length and order of items in the `output` array is dependent on the model's response. - Rather than accessing the first item in the `output` array and assuming it's an `assistant` message with the content generated by the model, you might consider using the `output_text` property where supported in SDKs. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `parallel_tool_calls: boolean` Whether to allow the model to run tool calls in parallel. - `temperature: number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `tool_choice: ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_p: number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `completed_at: optional number or null` Unix timestamp (in seconds) of when this Response was completed. Only present when the status is `completed`. - `conversation: optional object { id } or null` The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation. - `id: string` The unique ID of the conversation that this response was associated with. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `moderation: optional object { input, output } or null` Moderation results for the response input and output, if moderated completions were requested. - `input: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response input. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response output. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output_text: optional string or null` SDK-only convenience property that contains the aggregated text output from all `output_text` items in the `output` array, if any are present. Supported in the Python and JavaScript SDKs. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` The prompt-caching options that were applied to the response. Supported for `gpt-5.6` and later models. - `mode: "implicit" or "explicit"` Whether implicit prompt-cache breakpoints were enabled. - `"implicit"` - `"explicit"` - `ttl: "30m"` The minimum lifetime applied to each cache breakpoint. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `status: optional ResponseStatus` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `usage: optional ResponseUsage` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `sequence_number: number` The sequence number of this event. - `type: "response.incomplete"` The type of the event. Always `response.incomplete`. - `"response.incomplete"` ### Response Input Audio - `ResponseInputAudio object { input_audio, type }` An audio input to the model. - `input_audio: object { data, format }` - `data: string` Base64-encoded audio data. - `format: "mp3" or "wav"` The format of the audio data. Currently supported formats are `mp3` and `wav`. - `"mp3"` - `"wav"` - `type: "input_audio"` The type of the input item. Always `input_audio`. - `"input_audio"` ### Response Input Content - `ResponseInputContent = ResponseInputText or ResponseInputImage or ResponseInputFile` A text input to the model. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` ### Response Input File - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` ### Response Input File Content - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` ### Response Input Image - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` ### Response Input Image Content - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` ### Response Input Message Content List - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` ### Response Input Message Item - `ResponseInputMessageItem object { id, content, role, 2 more }` - `id: string` The unique ID of the message input. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `type: "message"` The type of the message input. Always set to `message`. - `"message"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` ### Response Input Text - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` ### Response Input Text Content - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` ### Response Local Environment - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` ### Response Mcp Call Arguments Delta Event - `ResponseMcpCallArgumentsDeltaEvent object { delta, item_id, output_index, 2 more }` Emitted when there is a delta (partial update) to the arguments of an MCP tool call. - `delta: string` A JSON string containing the partial update to the arguments for the MCP tool call. - `item_id: string` The unique identifier of the MCP tool call item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_call_arguments.delta"` The type of the event. Always 'response.mcp_call_arguments.delta'. - `"response.mcp_call_arguments.delta"` ### Response Mcp Call Arguments Done Event - `ResponseMcpCallArgumentsDoneEvent object { arguments, item_id, output_index, 2 more }` Emitted when the arguments for an MCP tool call are finalized. - `arguments: string` A JSON string containing the finalized arguments for the MCP tool call. - `item_id: string` The unique identifier of the MCP tool call item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_call_arguments.done"` The type of the event. Always 'response.mcp_call_arguments.done'. - `"response.mcp_call_arguments.done"` ### Response Mcp Call Completed Event - `ResponseMcpCallCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when an MCP tool call has completed successfully. - `item_id: string` The ID of the MCP tool call item that completed. - `output_index: number` The index of the output item that completed. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_call.completed"` The type of the event. Always 'response.mcp_call.completed'. - `"response.mcp_call.completed"` ### Response Mcp Call Failed Event - `ResponseMcpCallFailedEvent object { item_id, output_index, sequence_number, type }` Emitted when an MCP tool call has failed. - `item_id: string` The ID of the MCP tool call item that failed. - `output_index: number` The index of the output item that failed. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_call.failed"` The type of the event. Always 'response.mcp_call.failed'. - `"response.mcp_call.failed"` ### Response Mcp Call In Progress Event - `ResponseMcpCallInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when an MCP tool call is in progress. - `item_id: string` The unique identifier of the MCP tool call item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_call.in_progress"` The type of the event. Always 'response.mcp_call.in_progress'. - `"response.mcp_call.in_progress"` ### Response Mcp List Tools Completed Event - `ResponseMcpListToolsCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when the list of available MCP tools has been successfully retrieved. - `item_id: string` The ID of the MCP tool call item that produced this output. - `output_index: number` The index of the output item that was processed. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_list_tools.completed"` The type of the event. Always 'response.mcp_list_tools.completed'. - `"response.mcp_list_tools.completed"` ### Response Mcp List Tools Failed Event - `ResponseMcpListToolsFailedEvent object { item_id, output_index, sequence_number, type }` Emitted when the attempt to list available MCP tools has failed. - `item_id: string` The ID of the MCP tool call item that failed. - `output_index: number` The index of the output item that failed. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_list_tools.failed"` The type of the event. Always 'response.mcp_list_tools.failed'. - `"response.mcp_list_tools.failed"` ### Response Mcp List Tools In Progress Event - `ResponseMcpListToolsInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when the system is in the process of retrieving the list of available MCP tools. - `item_id: string` The ID of the MCP tool call item that is being processed. - `output_index: number` The index of the output item that is being processed. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_list_tools.in_progress"` The type of the event. Always 'response.mcp_list_tools.in_progress'. - `"response.mcp_list_tools.in_progress"` ### Response Output Audio - `ResponseOutputAudio object { data, transcript, type }` An audio output from the model. - `data: string` Base64-encoded audio data from the model. - `transcript: string` The transcript of the audio data from the model. - `type: "output_audio"` The type of the output audio. Always `output_audio`. - `"output_audio"` ### Response Output Item - `ResponseOutputItem = ResponseOutputMessage or object { id, queries, status, 2 more } or object { arguments, call_id, name, 5 more } or 25 more` An output message from the model. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. ### Response Output Item Added Event - `ResponseOutputItemAddedEvent object { item, output_index, sequence_number, type }` Emitted when a new output item is added. - `item: ResponseOutputItem` The output item that was added. For reasoning items, `encrypted_content` may be incomplete while the item is in progress. Use the reasoning item from the corresponding `response.output_item.done` event when passing it as input to a subsequent request. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `output_index: number` The index of the output item that was added. - `sequence_number: number` The sequence number of this event. - `type: "response.output_item.added"` The type of the event. Always `response.output_item.added`. - `"response.output_item.added"` ### Response Output Item Done Event - `ResponseOutputItemDoneEvent object { item, output_index, sequence_number, type }` Emitted when an output item is marked done. - `item: ResponseOutputItem` The output item that was marked done. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `output_index: number` The index of the output item that was marked done. - `sequence_number: number` The sequence number of this event. - `type: "response.output_item.done"` The type of the event. Always `response.output_item.done`. - `"response.output_item.done"` ### Response Output Message - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` ### Response Output Refusal - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` ### Response Output Text - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` ### Response Output Text Annotation Added Event - `ResponseOutputTextAnnotationAddedEvent object { annotation, annotation_index, content_index, 4 more }` Emitted when an annotation is added to output text content. - `annotation: object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type } or null` An annotation that applies to a span of output text. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `annotation_index: number` The index of the annotation within the content part. - `content_index: number` The index of the content part within the output item. - `item_id: string` The unique identifier of the item to which the annotation is being added. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of this event. - `type: "response.output_text.annotation.added"` The type of the event. Always 'response.output_text.annotation.added'. - `"response.output_text.annotation.added"` ### Response Prompt - `ResponsePrompt object { id, variables, version }` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `version: optional string or null` Optional version of the prompt template. ### Response Queued Event - `ResponseQueuedEvent object { response, sequence_number, type }` Emitted when a response is queued and waiting to be processed. - `response: Response` The full response object that is queued. - `id: string` Unique identifier for this Response. - `created_at: number` Unix timestamp (in seconds) of when this Response was created. - `error: ResponseError or null` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. - `incomplete_details: object { reason } or null` Details about why the response is incomplete. - `reason: optional "max_output_tokens" or "content_filter"` The reason why the response is incomplete. - `"max_output_tokens"` - `"content_filter"` - `instructions: string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `string` A text input to the model, equivalent to a text input with the `developer` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `metadata: Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `object: "response"` The object type of this resource - always set to `response`. - `"response"` - `output: array of ResponseOutputItem` An array of content items generated by the model. - The length and order of items in the `output` array is dependent on the model's response. - Rather than accessing the first item in the `output` array and assuming it's an `assistant` message with the content generated by the model, you might consider using the `output_text` property where supported in SDKs. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `parallel_tool_calls: boolean` Whether to allow the model to run tool calls in parallel. - `temperature: number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `tool_choice: ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_p: number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `completed_at: optional number or null` Unix timestamp (in seconds) of when this Response was completed. Only present when the status is `completed`. - `conversation: optional object { id } or null` The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation. - `id: string` The unique ID of the conversation that this response was associated with. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `moderation: optional object { input, output } or null` Moderation results for the response input and output, if moderated completions were requested. - `input: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response input. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response output. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output_text: optional string or null` SDK-only convenience property that contains the aggregated text output from all `output_text` items in the `output` array, if any are present. Supported in the Python and JavaScript SDKs. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` The prompt-caching options that were applied to the response. Supported for `gpt-5.6` and later models. - `mode: "implicit" or "explicit"` Whether implicit prompt-cache breakpoints were enabled. - `"implicit"` - `"explicit"` - `ttl: "30m"` The minimum lifetime applied to each cache breakpoint. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `status: optional ResponseStatus` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `usage: optional ResponseUsage` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `sequence_number: number` The sequence number for this event. - `type: "response.queued"` The type of the event. Always 'response.queued'. - `"response.queued"` ### Response Reasoning Summary Part Added Event - `ResponseReasoningSummaryPartAddedEvent object { item_id, output_index, part, 3 more }` Emitted when a new reasoning summary part is added. - `item_id: string` The ID of the item this summary part is associated with. - `output_index: number` The index of the output item this summary part is associated with. - `part: object { text, type }` The summary part that was added. - `text: string` The text of the summary part. - `type: "summary_text"` The type of the summary part. Always `summary_text`. - `"summary_text"` - `sequence_number: number` The sequence number of this event. - `summary_index: number` The index of the summary part within the reasoning summary. - `type: "response.reasoning_summary_part.added"` The type of the event. Always `response.reasoning_summary_part.added`. - `"response.reasoning_summary_part.added"` ### Response Reasoning Summary Part Done Event - `ResponseReasoningSummaryPartDoneEvent object { item_id, output_index, part, 4 more }` Emitted when a reasoning summary part is completed. - `item_id: string` The ID of the item this summary part is associated with. - `output_index: number` The index of the output item this summary part is associated with. - `part: object { text, type }` The completed summary part. - `text: string` The text of the summary part. - `type: "summary_text"` The type of the summary part. Always `summary_text`. - `"summary_text"` - `sequence_number: number` The sequence number of this event. - `summary_index: number` The index of the summary part within the reasoning summary. - `type: "response.reasoning_summary_part.done"` The type of the event. Always `response.reasoning_summary_part.done`. - `"response.reasoning_summary_part.done"` - `status: optional "incomplete"` The completion status of the summary part. Omitted when the part completed normally and set to `incomplete` when generation was interrupted. - `"incomplete"` ### Response Reasoning Summary Text Delta Event - `ResponseReasoningSummaryTextDeltaEvent object { delta, item_id, output_index, 3 more }` Emitted when a delta is added to a reasoning summary text. - `delta: string` The text delta that was added to the summary. - `item_id: string` The ID of the item this summary text delta is associated with. - `output_index: number` The index of the output item this summary text delta is associated with. - `sequence_number: number` The sequence number of this event. - `summary_index: number` The index of the summary part within the reasoning summary. - `type: "response.reasoning_summary_text.delta"` The type of the event. Always `response.reasoning_summary_text.delta`. - `"response.reasoning_summary_text.delta"` ### Response Reasoning Summary Text Done Event - `ResponseReasoningSummaryTextDoneEvent object { item_id, output_index, sequence_number, 3 more }` Emitted when a reasoning summary text is completed. - `item_id: string` The ID of the item this summary text is associated with. - `output_index: number` The index of the output item this summary text is associated with. - `sequence_number: number` The sequence number of this event. - `summary_index: number` The index of the summary part within the reasoning summary. - `text: string` The full text of the completed reasoning summary. - `type: "response.reasoning_summary_text.done"` The type of the event. Always `response.reasoning_summary_text.done`. - `"response.reasoning_summary_text.done"` ### Response Reasoning Text Delta Event - `ResponseReasoningTextDeltaEvent object { content_index, delta, item_id, 3 more }` Emitted when a delta is added to a reasoning text. - `content_index: number` The index of the reasoning content part this delta is associated with. - `delta: string` The text delta that was added to the reasoning content. - `item_id: string` The ID of the item this reasoning text delta is associated with. - `output_index: number` The index of the output item this reasoning text delta is associated with. - `sequence_number: number` The sequence number of this event. - `type: "response.reasoning_text.delta"` The type of the event. Always `response.reasoning_text.delta`. - `"response.reasoning_text.delta"` ### Response Reasoning Text Done Event - `ResponseReasoningTextDoneEvent object { content_index, item_id, output_index, 3 more }` Emitted when a reasoning text is completed. - `content_index: number` The index of the reasoning content part. - `item_id: string` The ID of the item this reasoning text is associated with. - `output_index: number` The index of the output item this reasoning text is associated with. - `sequence_number: number` The sequence number of this event. - `text: string` The full text of the completed reasoning content. - `type: "response.reasoning_text.done"` The type of the event. Always `response.reasoning_text.done`. - `"response.reasoning_text.done"` ### Response Refusal Delta Event - `ResponseRefusalDeltaEvent object { content_index, delta, item_id, 3 more }` Emitted when there is a partial refusal text. - `content_index: number` The index of the content part that the refusal text is added to. - `delta: string` The refusal text that is added. - `item_id: string` The ID of the output item that the refusal text is added to. - `output_index: number` The index of the output item that the refusal text is added to. - `sequence_number: number` The sequence number of this event. - `type: "response.refusal.delta"` The type of the event. Always `response.refusal.delta`. - `"response.refusal.delta"` ### Response Refusal Done Event - `ResponseRefusalDoneEvent object { content_index, item_id, output_index, 3 more }` Emitted when refusal text is finalized. - `content_index: number` The index of the content part that the refusal text is finalized. - `item_id: string` The ID of the output item that the refusal text is finalized. - `output_index: number` The index of the output item that the refusal text is finalized. - `refusal: string` The refusal text that is finalized. - `sequence_number: number` The sequence number of this event. - `type: "response.refusal.done"` The type of the event. Always `response.refusal.done`. - `"response.refusal.done"` ### Response Shell Call Command Added Event - `ResponseShellCallCommandAddedEvent object { command, command_index, output_index, 2 more }` A streaming event that indicated a shell command was added to a tool call. - `command: string` The shell command that was added. - `command_index: number` The index of the shell command that was added. - `output_index: number` The index of the output item that was updated. - `sequence_number: number` The sequence number of the event that was emitted. - `type: "response.shell_call_command.added"` The type of the event, always `response.shell_call_command.added`. - `"response.shell_call_command.added"` ### Response Shell Call Command Delta Event - `ResponseShellCallCommandDeltaEvent object { command_index, delta, output_index, 3 more }` A streaming event that indicated a shell command was incrementally updated. - `command_index: number` The index of the shell command that was updated. - `delta: string` The shell command delta that was appended. - `output_index: number` The index of the output item that was updated. - `sequence_number: number` The sequence number of the event that was emitted. - `type: "response.shell_call_command.delta"` The type of the event, always `response.shell_call_command.delta`. - `"response.shell_call_command.delta"` - `obfuscation: optional string` An obfuscation string that was added to pad the event payload. ### Response Shell Call Command Done Event - `ResponseShellCallCommandDoneEvent object { command, command_index, output_index, 2 more }` A streaming event that indicated a shell command was completed. - `command: string` The final shell command that was emitted. - `command_index: number` The index of the shell command that was completed. - `output_index: number` The index of the output item that was updated. - `sequence_number: number` The sequence number of the event that was emitted. - `type: "response.shell_call_command.done"` The type of the event, always `response.shell_call_command.done`. - `"response.shell_call_command.done"` ### Response Shell Call Output Content Delta Event - `ResponseShellCallOutputContentDeltaEvent object { command_index, delta, item_id, 3 more }` A streaming event that indicated shell call output was incrementally added. - `command_index: number` The index of the shell command that produced output. - `delta: object { stderr, stdout }` The stdout/stderr delta that was emitted. - `stderr: optional string` The stderr delta that was emitted. - `stdout: optional string` The stdout delta that was emitted. - `item_id: string` The ID of the output item that was updated. - `output_index: number` The index of the output item that was updated. - `sequence_number: number` The sequence number of the event that was emitted. - `type: "response.shell_call_output_content.delta"` The type of the event, always `response.shell_call_output_content.delta`. - `"response.shell_call_output_content.delta"` ### Response Shell Call Output Content Done Event - `ResponseShellCallOutputContentDoneEvent object { command_index, item_id, output, 3 more }` A streaming event that indicated shell call output was completed. - `command_index: number` The index of the shell command that produced output. - `item_id: string` The ID of the output item that was updated. - `output: array of object { outcome, stderr, stdout, created_by }` The output contents emitted for the shell command. - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `output_index: number` The index of the output item that was updated. - `sequence_number: number` The sequence number of the event that was emitted. - `type: "response.shell_call_output_content.done"` The type of the event, always `response.shell_call_output_content.done`. - `"response.shell_call_output_content.done"` ### Response Status - `ResponseStatus = "completed" or "failed" or "in_progress" or 3 more` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` ### Response Stream Event - `ResponseStreamEvent = ResponseAudioDeltaEvent or ResponseAudioDoneEvent or ResponseAudioTranscriptDeltaEvent or 55 more` Event emitted while a response is streamed. - `ResponseAudioDeltaEvent object { delta, sequence_number, type }` Emitted when there is a partial audio response. - `delta: string` A chunk of Base64 encoded response audio bytes. - `sequence_number: number` A sequence number for this chunk of the stream response. - `type: "response.audio.delta"` The type of the event. Always `response.audio.delta`. - `"response.audio.delta"` - `ResponseAudioDoneEvent object { sequence_number, type }` Emitted when the audio response is complete. - `sequence_number: number` The sequence number of the delta. - `type: "response.audio.done"` The type of the event. Always `response.audio.done`. - `"response.audio.done"` - `ResponseAudioTranscriptDeltaEvent object { delta, sequence_number, type }` Emitted when there is a partial transcript of audio. - `delta: string` The partial transcript of the audio response. - `sequence_number: number` The sequence number of this event. - `type: "response.audio.transcript.delta"` The type of the event. Always `response.audio.transcript.delta`. - `"response.audio.transcript.delta"` - `ResponseAudioTranscriptDoneEvent object { sequence_number, type }` Emitted when the full audio transcript is completed. - `sequence_number: number` The sequence number of this event. - `type: "response.audio.transcript.done"` The type of the event. Always `response.audio.transcript.done`. - `"response.audio.transcript.done"` - `ResponseCodeInterpreterCallCodeDeltaEvent object { delta, item_id, output_index, 2 more }` Emitted when a partial code snippet is streamed by the code interpreter. - `delta: string` The partial code snippet being streamed by the code interpreter. - `item_id: string` The unique identifier of the code interpreter tool call item. - `output_index: number` The index of the output item in the response for which the code is being streamed. - `sequence_number: number` The sequence number of this event, used to order streaming events. - `type: "response.code_interpreter_call_code.delta"` The type of the event. Always `response.code_interpreter_call_code.delta`. - `"response.code_interpreter_call_code.delta"` - `ResponseCodeInterpreterCallCodeDoneEvent object { code, item_id, output_index, 2 more }` Emitted when the code snippet is finalized by the code interpreter. - `code: string` The final code snippet output by the code interpreter. - `item_id: string` The unique identifier of the code interpreter tool call item. - `output_index: number` The index of the output item in the response for which the code is finalized. - `sequence_number: number` The sequence number of this event, used to order streaming events. - `type: "response.code_interpreter_call_code.done"` The type of the event. Always `response.code_interpreter_call_code.done`. - `"response.code_interpreter_call_code.done"` - `ResponseCodeInterpreterCallCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when the code interpreter call is completed. - `item_id: string` The unique identifier of the code interpreter tool call item. - `output_index: number` The index of the output item in the response for which the code interpreter call is completed. - `sequence_number: number` The sequence number of this event, used to order streaming events. - `type: "response.code_interpreter_call.completed"` The type of the event. Always `response.code_interpreter_call.completed`. - `"response.code_interpreter_call.completed"` - `ResponseCodeInterpreterCallInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when a code interpreter call is in progress. - `item_id: string` The unique identifier of the code interpreter tool call item. - `output_index: number` The index of the output item in the response for which the code interpreter call is in progress. - `sequence_number: number` The sequence number of this event, used to order streaming events. - `type: "response.code_interpreter_call.in_progress"` The type of the event. Always `response.code_interpreter_call.in_progress`. - `"response.code_interpreter_call.in_progress"` - `ResponseCodeInterpreterCallInterpretingEvent object { item_id, output_index, sequence_number, type }` Emitted when the code interpreter is actively interpreting the code snippet. - `item_id: string` The unique identifier of the code interpreter tool call item. - `output_index: number` The index of the output item in the response for which the code interpreter is interpreting code. - `sequence_number: number` The sequence number of this event, used to order streaming events. - `type: "response.code_interpreter_call.interpreting"` The type of the event. Always `response.code_interpreter_call.interpreting`. - `"response.code_interpreter_call.interpreting"` - `ResponseCompletedEvent object { response, sequence_number, type }` Emitted when the model response is complete. - `response: Response` Properties of the completed response. - `id: string` Unique identifier for this Response. - `created_at: number` Unix timestamp (in seconds) of when this Response was created. - `error: ResponseError or null` An error object returned when the model fails to generate a Response. - `code: "server_error" or "rate_limit_exceeded" or "invalid_prompt" or 17 more` The error code for the response. - `"server_error"` - `"rate_limit_exceeded"` - `"invalid_prompt"` - `"data_residency_mismatch"` - `"bio_policy"` - `"vector_store_timeout"` - `"invalid_image"` - `"invalid_image_format"` - `"invalid_base64_image"` - `"invalid_image_url"` - `"image_too_large"` - `"image_too_small"` - `"image_parse_error"` - `"image_content_policy_violation"` - `"invalid_image_mode"` - `"image_file_too_large"` - `"unsupported_image_media_type"` - `"empty_image_file"` - `"failed_to_download_image"` - `"image_file_not_found"` - `message: string` A human-readable description of the error. - `incomplete_details: object { reason } or null` Details about why the response is incomplete. - `reason: optional "max_output_tokens" or "content_filter"` The reason why the response is incomplete. - `"max_output_tokens"` - `"content_filter"` - `instructions: string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `string` A text input to the model, equivalent to a text input with the `developer` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `metadata: Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `object: "response"` The object type of this resource - always set to `response`. - `"response"` - `output: array of ResponseOutputItem` An array of content items generated by the model. - The length and order of items in the `output` array is dependent on the model's response. - Rather than accessing the first item in the `output` array and assuming it's an `assistant` message with the content generated by the model, you might consider using the `output_text` property where supported in SDKs. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `parallel_tool_calls: boolean` Whether to allow the model to run tool calls in parallel. - `temperature: number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `tool_choice: ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_p: number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `completed_at: optional number or null` Unix timestamp (in seconds) of when this Response was completed. Only present when the status is `completed`. - `conversation: optional object { id } or null` The conversation that this response belonged to. Input items and output items from this response were automatically added to this conversation. - `id: string` The unique ID of the conversation that this response was associated with. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `moderation: optional object { input, output } or null` Moderation results for the response input and output, if moderated completions were requested. - `input: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response input. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output: object { categories, category_applied_input_types, category_scores, 3 more } or object { code, message, type }` Moderation for the response output. - `ModerationResult object { categories, category_applied_input_types, category_scores, 3 more }` A moderation result produced for the response input or output. - `categories: map[boolean]` A dictionary of moderation categories to booleans, True if the input is flagged under this category. - `category_applied_input_types: map[array of "text" or "image"]` Which modalities of input are reflected by the score for each category. - `"text"` - `"image"` - `category_scores: map[number]` A dictionary of moderation categories to scores. - `flagged: boolean` A boolean indicating whether the content was flagged by any category. - `model: string` The moderation model that produced this result. - `type: "moderation_result"` The object type, which was always `moderation_result` for successful moderation results. - `"moderation_result"` - `Error object { code, message, type }` An error produced while attempting moderation for the response input or output. - `code: string` The error code. - `message: string` The error message. - `type: "error"` The object type, which was always `error` for moderation failures. - `"error"` - `output_text: optional string or null` SDK-only convenience property that contains the aggregated text output from all `output_text` items in the `output` array, if any are present. Supported in the Python and JavaScript SDKs. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` The prompt-caching options that were applied to the response. Supported for `gpt-5.6` and later models. - `mode: "implicit" or "explicit"` Whether implicit prompt-cache breakpoints were enabled. - `"implicit"` - `"explicit"` - `ttl: "30m"` The minimum lifetime applied to each cache breakpoint. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `status: optional ResponseStatus` The status of the response generation. One of `completed`, `failed`, `in_progress`, `cancelled`, `queued`, or `incomplete`. - `"completed"` - `"failed"` - `"in_progress"` - `"cancelled"` - `"queued"` - `"incomplete"` - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `usage: optional ResponseUsage` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `sequence_number: number` The sequence number for this event. - `type: "response.completed"` The type of the event. Always `response.completed`. - `"response.completed"` - `ResponseContentPartAddedEvent object { content_index, item_id, output_index, 3 more }` Emitted when a new content part is added. - `content_index: number` The index of the content part that was added. - `item_id: string` The ID of the output item that the content part was added to. - `output_index: number` The index of the output item that the content part was added to. - `part: ResponseOutputText or ResponseOutputRefusal or object { text, type }` The content part that was added. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `ReasoningText object { text, type }` Reasoning text from the model. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `sequence_number: number` The sequence number of this event. - `type: "response.content_part.added"` The type of the event. Always `response.content_part.added`. - `"response.content_part.added"` - `ResponseContentPartDoneEvent object { content_index, item_id, output_index, 3 more }` Emitted when a content part is done. - `content_index: number` The index of the content part that is done. - `item_id: string` The ID of the output item that the content part was added to. - `output_index: number` The index of the output item that the content part was added to. - `part: ResponseOutputText or ResponseOutputRefusal or object { text, type }` The content part that is done. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `ReasoningText object { text, type }` Reasoning text from the model. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `sequence_number: number` The sequence number of this event. - `type: "response.content_part.done"` The type of the event. Always `response.content_part.done`. - `"response.content_part.done"` - `ResponseCreatedEvent object { response, sequence_number, type }` An event that is emitted when a response is created. - `response: Response` The response that was created. - `sequence_number: number` The sequence number for this event. - `type: "response.created"` The type of the event. Always `response.created`. - `"response.created"` - `ResponseErrorEvent object { code, message, param, 2 more }` Emitted when an error occurs. - `code: string or null` The error code. - `message: string` The error message. - `param: string or null` The error parameter. - `sequence_number: number` The sequence number of this event. - `type: "error"` The type of the event. Always `error`. - `"error"` - `ResponseFileSearchCallCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when a file search call is completed (results found). - `item_id: string` The ID of the output item that the file search call is initiated. - `output_index: number` The index of the output item that the file search call is initiated. - `sequence_number: number` The sequence number of this event. - `type: "response.file_search_call.completed"` The type of the event. Always `response.file_search_call.completed`. - `"response.file_search_call.completed"` - `ResponseFileSearchCallInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when a file search call is initiated. - `item_id: string` The ID of the output item that the file search call is initiated. - `output_index: number` The index of the output item that the file search call is initiated. - `sequence_number: number` The sequence number of this event. - `type: "response.file_search_call.in_progress"` The type of the event. Always `response.file_search_call.in_progress`. - `"response.file_search_call.in_progress"` - `ResponseFileSearchCallSearchingEvent object { item_id, output_index, sequence_number, type }` Emitted when a file search is currently searching. - `item_id: string` The ID of the output item that the file search call is initiated. - `output_index: number` The index of the output item that the file search call is searching. - `sequence_number: number` The sequence number of this event. - `type: "response.file_search_call.searching"` The type of the event. Always `response.file_search_call.searching`. - `"response.file_search_call.searching"` - `ResponseFunctionCallArgumentsDeltaEvent object { delta, item_id, output_index, 2 more }` Emitted when there is a partial function-call arguments delta. - `delta: string` The function-call arguments delta that is added. - `item_id: string` The ID of the output item that the function-call arguments delta is added to. - `output_index: number` The index of the output item that the function-call arguments delta is added to. - `sequence_number: number` The sequence number of this event. - `type: "response.function_call_arguments.delta"` The type of the event. Always `response.function_call_arguments.delta`. - `"response.function_call_arguments.delta"` - `ResponseFunctionCallArgumentsDoneEvent object { arguments, item_id, name, 3 more }` Emitted when function-call arguments are finalized. - `arguments: string` The function-call arguments. - `item_id: string` The ID of the item. - `name: string` The name of the function that was called. - `output_index: number` The index of the output item. - `sequence_number: number` The sequence number of this event. - `type: "response.function_call_arguments.done"` - `"response.function_call_arguments.done"` - `ResponseShellCallCommandAddedEvent object { command, command_index, output_index, 2 more }` A streaming event that indicated a shell command was added to a tool call. - `command: string` The shell command that was added. - `command_index: number` The index of the shell command that was added. - `output_index: number` The index of the output item that was updated. - `sequence_number: number` The sequence number of the event that was emitted. - `type: "response.shell_call_command.added"` The type of the event, always `response.shell_call_command.added`. - `"response.shell_call_command.added"` - `ResponseShellCallCommandDeltaEvent object { command_index, delta, output_index, 3 more }` A streaming event that indicated a shell command was incrementally updated. - `command_index: number` The index of the shell command that was updated. - `delta: string` The shell command delta that was appended. - `output_index: number` The index of the output item that was updated. - `sequence_number: number` The sequence number of the event that was emitted. - `type: "response.shell_call_command.delta"` The type of the event, always `response.shell_call_command.delta`. - `"response.shell_call_command.delta"` - `obfuscation: optional string` An obfuscation string that was added to pad the event payload. - `ResponseShellCallCommandDoneEvent object { command, command_index, output_index, 2 more }` A streaming event that indicated a shell command was completed. - `command: string` The final shell command that was emitted. - `command_index: number` The index of the shell command that was completed. - `output_index: number` The index of the output item that was updated. - `sequence_number: number` The sequence number of the event that was emitted. - `type: "response.shell_call_command.done"` The type of the event, always `response.shell_call_command.done`. - `"response.shell_call_command.done"` - `ResponseShellCallOutputContentDeltaEvent object { command_index, delta, item_id, 3 more }` A streaming event that indicated shell call output was incrementally added. - `command_index: number` The index of the shell command that produced output. - `delta: object { stderr, stdout }` The stdout/stderr delta that was emitted. - `stderr: optional string` The stderr delta that was emitted. - `stdout: optional string` The stdout delta that was emitted. - `item_id: string` The ID of the output item that was updated. - `output_index: number` The index of the output item that was updated. - `sequence_number: number` The sequence number of the event that was emitted. - `type: "response.shell_call_output_content.delta"` The type of the event, always `response.shell_call_output_content.delta`. - `"response.shell_call_output_content.delta"` - `ResponseShellCallOutputContentDoneEvent object { command_index, item_id, output, 3 more }` A streaming event that indicated shell call output was completed. - `command_index: number` The index of the shell command that produced output. - `item_id: string` The ID of the output item that was updated. - `output: array of object { outcome, stderr, stdout, created_by }` The output contents emitted for the shell command. - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `output_index: number` The index of the output item that was updated. - `sequence_number: number` The sequence number of the event that was emitted. - `type: "response.shell_call_output_content.done"` The type of the event, always `response.shell_call_output_content.done`. - `"response.shell_call_output_content.done"` - `ResponseInProgressEvent object { response, sequence_number, type }` Emitted when the response is in progress. - `response: Response` The response that is in progress. - `sequence_number: number` The sequence number of this event. - `type: "response.in_progress"` The type of the event. Always `response.in_progress`. - `"response.in_progress"` - `ResponseFailedEvent object { response, sequence_number, type }` An event that is emitted when a response fails. - `response: Response` The response that failed. - `sequence_number: number` The sequence number of this event. - `type: "response.failed"` The type of the event. Always `response.failed`. - `"response.failed"` - `ResponseIncompleteEvent object { response, sequence_number, type }` An event that is emitted when a response finishes as incomplete. - `response: Response` The response that was incomplete. - `sequence_number: number` The sequence number of this event. - `type: "response.incomplete"` The type of the event. Always `response.incomplete`. - `"response.incomplete"` - `ResponseOutputItemAddedEvent object { item, output_index, sequence_number, type }` Emitted when a new output item is added. - `item: ResponseOutputItem` The output item that was added. For reasoning items, `encrypted_content` may be incomplete while the item is in progress. Use the reasoning item from the corresponding `response.output_item.done` event when passing it as input to a subsequent request. - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `FunctionCallOutput object { id, output, status, 6 more }` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `Program object { id, call_id, code, 2 more }` - `ProgramOutput object { id, call_id, result, 2 more }` - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `AdditionalTools object { id, role, tools, type }` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `output_index: number` The index of the output item that was added. - `sequence_number: number` The sequence number of this event. - `type: "response.output_item.added"` The type of the event. Always `response.output_item.added`. - `"response.output_item.added"` - `ResponseOutputItemDoneEvent object { item, output_index, sequence_number, type }` Emitted when an output item is marked done. - `item: ResponseOutputItem` The output item that was marked done. - `output_index: number` The index of the output item that was marked done. - `sequence_number: number` The sequence number of this event. - `type: "response.output_item.done"` The type of the event. Always `response.output_item.done`. - `"response.output_item.done"` - `ResponseReasoningSummaryPartAddedEvent object { item_id, output_index, part, 3 more }` Emitted when a new reasoning summary part is added. - `item_id: string` The ID of the item this summary part is associated with. - `output_index: number` The index of the output item this summary part is associated with. - `part: object { text, type }` The summary part that was added. - `text: string` The text of the summary part. - `type: "summary_text"` The type of the summary part. Always `summary_text`. - `"summary_text"` - `sequence_number: number` The sequence number of this event. - `summary_index: number` The index of the summary part within the reasoning summary. - `type: "response.reasoning_summary_part.added"` The type of the event. Always `response.reasoning_summary_part.added`. - `"response.reasoning_summary_part.added"` - `ResponseReasoningSummaryPartDoneEvent object { item_id, output_index, part, 4 more }` Emitted when a reasoning summary part is completed. - `item_id: string` The ID of the item this summary part is associated with. - `output_index: number` The index of the output item this summary part is associated with. - `part: object { text, type }` The completed summary part. - `text: string` The text of the summary part. - `type: "summary_text"` The type of the summary part. Always `summary_text`. - `"summary_text"` - `sequence_number: number` The sequence number of this event. - `summary_index: number` The index of the summary part within the reasoning summary. - `type: "response.reasoning_summary_part.done"` The type of the event. Always `response.reasoning_summary_part.done`. - `"response.reasoning_summary_part.done"` - `status: optional "incomplete"` The completion status of the summary part. Omitted when the part completed normally and set to `incomplete` when generation was interrupted. - `"incomplete"` - `ResponseReasoningSummaryTextDeltaEvent object { delta, item_id, output_index, 3 more }` Emitted when a delta is added to a reasoning summary text. - `delta: string` The text delta that was added to the summary. - `item_id: string` The ID of the item this summary text delta is associated with. - `output_index: number` The index of the output item this summary text delta is associated with. - `sequence_number: number` The sequence number of this event. - `summary_index: number` The index of the summary part within the reasoning summary. - `type: "response.reasoning_summary_text.delta"` The type of the event. Always `response.reasoning_summary_text.delta`. - `"response.reasoning_summary_text.delta"` - `ResponseReasoningSummaryTextDoneEvent object { item_id, output_index, sequence_number, 3 more }` Emitted when a reasoning summary text is completed. - `item_id: string` The ID of the item this summary text is associated with. - `output_index: number` The index of the output item this summary text is associated with. - `sequence_number: number` The sequence number of this event. - `summary_index: number` The index of the summary part within the reasoning summary. - `text: string` The full text of the completed reasoning summary. - `type: "response.reasoning_summary_text.done"` The type of the event. Always `response.reasoning_summary_text.done`. - `"response.reasoning_summary_text.done"` - `ResponseReasoningTextDeltaEvent object { content_index, delta, item_id, 3 more }` Emitted when a delta is added to a reasoning text. - `content_index: number` The index of the reasoning content part this delta is associated with. - `delta: string` The text delta that was added to the reasoning content. - `item_id: string` The ID of the item this reasoning text delta is associated with. - `output_index: number` The index of the output item this reasoning text delta is associated with. - `sequence_number: number` The sequence number of this event. - `type: "response.reasoning_text.delta"` The type of the event. Always `response.reasoning_text.delta`. - `"response.reasoning_text.delta"` - `ResponseReasoningTextDoneEvent object { content_index, item_id, output_index, 3 more }` Emitted when a reasoning text is completed. - `content_index: number` The index of the reasoning content part. - `item_id: string` The ID of the item this reasoning text is associated with. - `output_index: number` The index of the output item this reasoning text is associated with. - `sequence_number: number` The sequence number of this event. - `text: string` The full text of the completed reasoning content. - `type: "response.reasoning_text.done"` The type of the event. Always `response.reasoning_text.done`. - `"response.reasoning_text.done"` - `ResponseRefusalDeltaEvent object { content_index, delta, item_id, 3 more }` Emitted when there is a partial refusal text. - `content_index: number` The index of the content part that the refusal text is added to. - `delta: string` The refusal text that is added. - `item_id: string` The ID of the output item that the refusal text is added to. - `output_index: number` The index of the output item that the refusal text is added to. - `sequence_number: number` The sequence number of this event. - `type: "response.refusal.delta"` The type of the event. Always `response.refusal.delta`. - `"response.refusal.delta"` - `ResponseRefusalDoneEvent object { content_index, item_id, output_index, 3 more }` Emitted when refusal text is finalized. - `content_index: number` The index of the content part that the refusal text is finalized. - `item_id: string` The ID of the output item that the refusal text is finalized. - `output_index: number` The index of the output item that the refusal text is finalized. - `refusal: string` The refusal text that is finalized. - `sequence_number: number` The sequence number of this event. - `type: "response.refusal.done"` The type of the event. Always `response.refusal.done`. - `"response.refusal.done"` - `ResponseTextDeltaEvent object { content_index, delta, item_id, 4 more }` Emitted when there is an additional text delta. - `content_index: number` The index of the content part that the text delta was added to. - `delta: string` The text delta that was added. - `item_id: string` The ID of the output item that the text delta was added to. - `logprobs: array of object { token, logprob, top_logprobs }` The log probabilities of the tokens in the delta. - `token: string` A possible text token. - `logprob: number` The log probability of this token. - `top_logprobs: optional array of object { token, logprob }` The log probabilities of up to 20 of the most likely tokens. - `token: optional string` A possible text token. - `logprob: optional number` The log probability of this token. - `output_index: number` The index of the output item that the text delta was added to. - `sequence_number: number` The sequence number for this event. - `type: "response.output_text.delta"` The type of the event. Always `response.output_text.delta`. - `"response.output_text.delta"` - `ResponseTextDoneEvent object { content_index, item_id, logprobs, 4 more }` Emitted when text content is finalized. - `content_index: number` The index of the content part that the text content is finalized. - `item_id: string` The ID of the output item that the text content is finalized. - `logprobs: array of object { token, logprob, top_logprobs }` The log probabilities of the tokens in the delta. - `token: string` A possible text token. - `logprob: number` The log probability of this token. - `top_logprobs: optional array of object { token, logprob }` The log probabilities of up to 20 of the most likely tokens. - `token: optional string` A possible text token. - `logprob: optional number` The log probability of this token. - `output_index: number` The index of the output item that the text content is finalized. - `sequence_number: number` The sequence number for this event. - `text: string` The text content that is finalized. - `type: "response.output_text.done"` The type of the event. Always `response.output_text.done`. - `"response.output_text.done"` - `ResponseWebSearchCallCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when a web search call is completed. - `item_id: string` Unique ID for the output item associated with the web search call. - `output_index: number` The index of the output item that the web search call is associated with. - `sequence_number: number` The sequence number of the web search call being processed. - `type: "response.web_search_call.completed"` The type of the event. Always `response.web_search_call.completed`. - `"response.web_search_call.completed"` - `ResponseWebSearchCallInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when a web search call is initiated. - `item_id: string` Unique ID for the output item associated with the web search call. - `output_index: number` The index of the output item that the web search call is associated with. - `sequence_number: number` The sequence number of the web search call being processed. - `type: "response.web_search_call.in_progress"` The type of the event. Always `response.web_search_call.in_progress`. - `"response.web_search_call.in_progress"` - `ResponseWebSearchCallSearchingEvent object { item_id, output_index, sequence_number, type }` Emitted when a web search call is executing. - `item_id: string` Unique ID for the output item associated with the web search call. - `output_index: number` The index of the output item that the web search call is associated with. - `sequence_number: number` The sequence number of the web search call being processed. - `type: "response.web_search_call.searching"` The type of the event. Always `response.web_search_call.searching`. - `"response.web_search_call.searching"` - `ResponseImageGenCallCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when an image generation tool call has completed and the final image is available. - `item_id: string` The unique identifier of the image generation item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of this event. - `type: "response.image_generation_call.completed"` The type of the event. Always 'response.image_generation_call.completed'. - `"response.image_generation_call.completed"` - `ResponseImageGenCallGeneratingEvent object { item_id, output_index, sequence_number, type }` Emitted when an image generation tool call is actively generating an image (intermediate state). - `item_id: string` The unique identifier of the image generation item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of the image generation item being processed. - `type: "response.image_generation_call.generating"` The type of the event. Always 'response.image_generation_call.generating'. - `"response.image_generation_call.generating"` - `ResponseImageGenCallInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when an image generation tool call is in progress. - `item_id: string` The unique identifier of the image generation item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of the image generation item being processed. - `type: "response.image_generation_call.in_progress"` The type of the event. Always 'response.image_generation_call.in_progress'. - `"response.image_generation_call.in_progress"` - `ResponseImageGenCallPartialImageEvent object { item_id, output_index, partial_image_b64, 7 more }` Emitted when a partial image is available during image generation streaming. - `item_id: string` The unique identifier of the image generation item being processed. - `output_index: number` The index of the output item in the response's output array. - `partial_image_b64: string` Base64-encoded partial image data, suitable for rendering as an image. - `partial_image_index: number` 0-based index for the partial image (backend is 1-based, but this is 0-based for the user). - `sequence_number: number` The sequence number of the image generation item being processed. - `type: "response.image_generation_call.partial_image"` The type of the event. Always 'response.image_generation_call.partial_image'. - `"response.image_generation_call.partial_image"` - `background: optional string` The background setting that was used. - `output_format: optional string` The output format that was used. - `quality: optional string` The image quality that was used. - `size: optional string` The image size that was used. - `ResponseMcpCallArgumentsDeltaEvent object { delta, item_id, output_index, 2 more }` Emitted when there is a delta (partial update) to the arguments of an MCP tool call. - `delta: string` A JSON string containing the partial update to the arguments for the MCP tool call. - `item_id: string` The unique identifier of the MCP tool call item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_call_arguments.delta"` The type of the event. Always 'response.mcp_call_arguments.delta'. - `"response.mcp_call_arguments.delta"` - `ResponseMcpCallArgumentsDoneEvent object { arguments, item_id, output_index, 2 more }` Emitted when the arguments for an MCP tool call are finalized. - `arguments: string` A JSON string containing the finalized arguments for the MCP tool call. - `item_id: string` The unique identifier of the MCP tool call item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_call_arguments.done"` The type of the event. Always 'response.mcp_call_arguments.done'. - `"response.mcp_call_arguments.done"` - `ResponseMcpCallCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when an MCP tool call has completed successfully. - `item_id: string` The ID of the MCP tool call item that completed. - `output_index: number` The index of the output item that completed. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_call.completed"` The type of the event. Always 'response.mcp_call.completed'. - `"response.mcp_call.completed"` - `ResponseMcpCallFailedEvent object { item_id, output_index, sequence_number, type }` Emitted when an MCP tool call has failed. - `item_id: string` The ID of the MCP tool call item that failed. - `output_index: number` The index of the output item that failed. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_call.failed"` The type of the event. Always 'response.mcp_call.failed'. - `"response.mcp_call.failed"` - `ResponseMcpCallInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when an MCP tool call is in progress. - `item_id: string` The unique identifier of the MCP tool call item being processed. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_call.in_progress"` The type of the event. Always 'response.mcp_call.in_progress'. - `"response.mcp_call.in_progress"` - `ResponseMcpListToolsCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when the list of available MCP tools has been successfully retrieved. - `item_id: string` The ID of the MCP tool call item that produced this output. - `output_index: number` The index of the output item that was processed. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_list_tools.completed"` The type of the event. Always 'response.mcp_list_tools.completed'. - `"response.mcp_list_tools.completed"` - `ResponseMcpListToolsFailedEvent object { item_id, output_index, sequence_number, type }` Emitted when the attempt to list available MCP tools has failed. - `item_id: string` The ID of the MCP tool call item that failed. - `output_index: number` The index of the output item that failed. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_list_tools.failed"` The type of the event. Always 'response.mcp_list_tools.failed'. - `"response.mcp_list_tools.failed"` - `ResponseMcpListToolsInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when the system is in the process of retrieving the list of available MCP tools. - `item_id: string` The ID of the MCP tool call item that is being processed. - `output_index: number` The index of the output item that is being processed. - `sequence_number: number` The sequence number of this event. - `type: "response.mcp_list_tools.in_progress"` The type of the event. Always 'response.mcp_list_tools.in_progress'. - `"response.mcp_list_tools.in_progress"` - `ResponseOutputTextAnnotationAddedEvent object { annotation, annotation_index, content_index, 4 more }` Emitted when an annotation is added to output text content. - `annotation: object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type } or null` An annotation that applies to a span of output text. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `annotation_index: number` The index of the annotation within the content part. - `content_index: number` The index of the content part within the output item. - `item_id: string` The unique identifier of the item to which the annotation is being added. - `output_index: number` The index of the output item in the response's output array. - `sequence_number: number` The sequence number of this event. - `type: "response.output_text.annotation.added"` The type of the event. Always 'response.output_text.annotation.added'. - `"response.output_text.annotation.added"` - `ResponseQueuedEvent object { response, sequence_number, type }` Emitted when a response is queued and waiting to be processed. - `response: Response` The full response object that is queued. - `sequence_number: number` The sequence number for this event. - `type: "response.queued"` The type of the event. Always 'response.queued'. - `"response.queued"` - `ResponseCustomToolCallInputDeltaEvent object { delta, item_id, output_index, 2 more }` Event representing a delta (partial update) to the input of a custom tool call. - `delta: string` The incremental input data (delta) for the custom tool call. - `item_id: string` Unique identifier for the API item associated with this event. - `output_index: number` The index of the output this delta applies to. - `sequence_number: number` The sequence number of this event. - `type: "response.custom_tool_call_input.delta"` The event type identifier. - `"response.custom_tool_call_input.delta"` - `ResponseCustomToolCallInputDoneEvent object { input, item_id, output_index, 2 more }` Event indicating that input for a custom tool call is complete. - `input: string` The complete input data for the custom tool call. - `item_id: string` Unique identifier for the API item associated with this event. - `output_index: number` The index of the output this event applies to. - `sequence_number: number` The sequence number of this event. - `type: "response.custom_tool_call_input.done"` The event type identifier. - `"response.custom_tool_call_input.done"` ### Response Text Config - `ResponseTextConfig object { format, verbosity }` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` ### Response Text Delta Event - `ResponseTextDeltaEvent object { content_index, delta, item_id, 4 more }` Emitted when there is an additional text delta. - `content_index: number` The index of the content part that the text delta was added to. - `delta: string` The text delta that was added. - `item_id: string` The ID of the output item that the text delta was added to. - `logprobs: array of object { token, logprob, top_logprobs }` The log probabilities of the tokens in the delta. - `token: string` A possible text token. - `logprob: number` The log probability of this token. - `top_logprobs: optional array of object { token, logprob }` The log probabilities of up to 20 of the most likely tokens. - `token: optional string` A possible text token. - `logprob: optional number` The log probability of this token. - `output_index: number` The index of the output item that the text delta was added to. - `sequence_number: number` The sequence number for this event. - `type: "response.output_text.delta"` The type of the event. Always `response.output_text.delta`. - `"response.output_text.delta"` ### Response Text Done Event - `ResponseTextDoneEvent object { content_index, item_id, logprobs, 4 more }` Emitted when text content is finalized. - `content_index: number` The index of the content part that the text content is finalized. - `item_id: string` The ID of the output item that the text content is finalized. - `logprobs: array of object { token, logprob, top_logprobs }` The log probabilities of the tokens in the delta. - `token: string` A possible text token. - `logprob: number` The log probability of this token. - `top_logprobs: optional array of object { token, logprob }` The log probabilities of up to 20 of the most likely tokens. - `token: optional string` A possible text token. - `logprob: optional number` The log probability of this token. - `output_index: number` The index of the output item that the text content is finalized. - `sequence_number: number` The sequence number for this event. - `text: string` The text content that is finalized. - `type: "response.output_text.done"` The type of the event. Always `response.output_text.done`. - `"response.output_text.done"` ### Response Usage - `ResponseUsage object { input_tokens, input_tokens_details, output_tokens, 3 more }` Represents token usage details including input tokens, output tokens, a breakdown of output tokens, and the total tokens used. - `input_tokens: number` The number of input tokens. - `input_tokens_details: object { cache_write_tokens, cached_tokens }` A detailed breakdown of the input tokens. - `cache_write_tokens: number` The number of input tokens that were written to the cache. - `cached_tokens: number` The number of tokens that were retrieved from the cache. [More on prompt caching](/docs/guides/prompt-caching). - `output_tokens: number` The number of output tokens. - `output_tokens_details: object { reasoning_tokens }` A detailed breakdown of the output tokens. - `reasoning_tokens: number` The number of reasoning tokens. - `total_tokens: number` The total number of tokens used. - `compute_units: optional number or null` Compute units for the request. Currently null when available. ### Response Web Search Call Completed Event - `ResponseWebSearchCallCompletedEvent object { item_id, output_index, sequence_number, type }` Emitted when a web search call is completed. - `item_id: string` Unique ID for the output item associated with the web search call. - `output_index: number` The index of the output item that the web search call is associated with. - `sequence_number: number` The sequence number of the web search call being processed. - `type: "response.web_search_call.completed"` The type of the event. Always `response.web_search_call.completed`. - `"response.web_search_call.completed"` ### Response Web Search Call In Progress Event - `ResponseWebSearchCallInProgressEvent object { item_id, output_index, sequence_number, type }` Emitted when a web search call is initiated. - `item_id: string` Unique ID for the output item associated with the web search call. - `output_index: number` The index of the output item that the web search call is associated with. - `sequence_number: number` The sequence number of the web search call being processed. - `type: "response.web_search_call.in_progress"` The type of the event. Always `response.web_search_call.in_progress`. - `"response.web_search_call.in_progress"` ### Response Web Search Call Searching Event - `ResponseWebSearchCallSearchingEvent object { item_id, output_index, sequence_number, type }` Emitted when a web search call is executing. - `item_id: string` Unique ID for the output item associated with the web search call. - `output_index: number` The index of the output item that the web search call is associated with. - `sequence_number: number` The sequence number of the web search call being processed. - `type: "response.web_search_call.searching"` The type of the event. Always `response.web_search_call.searching`. - `"response.web_search_call.searching"` ### Responses Client Event - `ResponsesClientEvent object { type, background, context_management, 30 more }` - `type: "response.create"` The type of the client event. Always `response.create`. - `"response.create"` - `background: optional boolean or null` Whether to run the model response in the background. [Learn more](/docs/guides/background). - `context_management: optional array of object { type, compact_threshold } or null` Context management configuration for this request. - `type: string` The context management entry type. Currently only 'compaction' is supported. - `compact_threshold: optional number or null` Token threshold at which compaction should be triggered for this entry. - `conversation: optional string or ResponseConversationParam or null` The conversation that this response belongs to. Items from this conversation are prepended to `input_items` for this response request. Input items and output items from this response are automatically added to this conversation after this response completes. - `ConversationID = string` The unique ID of the conversation. - `ResponseConversationParam object { id }` The conversation that this response belongs to. - `id: string` The unique ID of the conversation. - `include: optional array of ResponseIncludable or null` Specify additional output data to include in the model response. Currently supported values are: - `web_search_call.action.sources`: Include the sources of the web search tool call. - `code_interpreter_call.outputs`: Includes the outputs of python code execution in code interpreter tool call items. - `computer_call_output.output.image_url`: Include image urls from the computer call output. - `file_search_call.results`: Include the search results of the file search tool call. - `message.input_image.image_url`: Include image urls from the input message. - `message.output_text.logprobs`: Include logprobs with assistant messages. - `reasoning.encrypted_content`: Includes an encrypted version of reasoning tokens in reasoning item outputs. This enables reasoning items to be used in multi-turn conversations when using the Responses API statelessly (like when the `store` parameter is set to `false`, or when an organization is enrolled in the zero data retention program). - `"file_search_call.results"` - `"web_search_call.results"` - `"web_search_call.action.sources"` - `"message.input_image.image_url"` - `"computer_call_output.output.image_url"` - `"code_interpreter_call.outputs"` - `"reasoning.encrypted_content"` - `"message.output_text.logprobs"` - `input: optional string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` Text, image, or file inputs to the model, used to generate a response. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Image inputs](/docs/guides/images) - [File inputs](/docs/guides/pdf-files) - [Conversation state](/docs/guides/conversation-state) - [Function calling](/docs/guides/function-calling) - `TextInput = string` A text input to the model, equivalent to a text input with the `user` role. - `InputItemList = array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `instructions: optional string or null` A system (or developer) message inserted into the model's context. When using along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `max_output_tokens: optional number or null` An upper bound for the number of tokens that can be generated for a response, including visible output tokens and [reasoning tokens](/docs/guides/reasoning). - `max_tool_calls: optional number or null` The maximum number of total calls to built-in tools that can be processed in a response. This maximum number applies across all built-in tool calls, not per individual tool. Any further attempts to call a tool by the model will be ignored. - `metadata: optional Metadata or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters. - `model: optional ResponsesModel` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `string` - `"gpt-5.6-sol" or "gpt-5.6-terra" or "gpt-5.6-luna" or 80 more` - `"gpt-5.6-sol"` - `"gpt-5.6-terra"` - `"gpt-5.6-luna"` - `"gpt-5.5"` - `"gpt-5.5-2026-04-23"` - `"gpt-5.4"` - `"gpt-5.4-mini"` - `"gpt-5.4-nano"` - `"gpt-5.4-mini-2026-03-17"` - `"gpt-5.4-nano-2026-03-17"` - `"gpt-5.3-chat-latest"` - `"gpt-5.2"` - `"gpt-5.2-2025-12-11"` - `"gpt-5.2-chat-latest"` - `"gpt-5.2-pro"` - `"gpt-5.2-pro-2025-12-11"` - `"gpt-5.1"` - `"gpt-5.1-2025-11-13"` - `"gpt-5.1-codex"` - `"gpt-5.1-mini"` - `"gpt-5.1-chat-latest"` - `"gpt-5"` - `"gpt-5-mini"` - `"gpt-5-nano"` - `"gpt-5-2025-08-07"` - `"gpt-5-mini-2025-08-07"` - `"gpt-5-nano-2025-08-07"` - `"gpt-5-chat-latest"` - `"gpt-4.1"` - `"gpt-4.1-mini"` - `"gpt-4.1-nano"` - `"gpt-4.1-2025-04-14"` - `"gpt-4.1-mini-2025-04-14"` - `"gpt-4.1-nano-2025-04-14"` - `"o4-mini"` - `"o4-mini-2025-04-16"` - `"o3"` - `"o3-2025-04-16"` - `"o3-mini"` - `"o3-mini-2025-01-31"` - `"o1"` - `"o1-2024-12-17"` - `"o1-preview"` - `"o1-preview-2024-09-12"` - `"o1-mini"` - `"o1-mini-2024-09-12"` - `"gpt-4o"` - `"gpt-4o-2024-11-20"` - `"gpt-4o-2024-08-06"` - `"gpt-4o-2024-05-13"` - `"gpt-4o-audio-preview"` - `"gpt-4o-audio-preview-2024-10-01"` - `"gpt-4o-audio-preview-2024-12-17"` - `"gpt-4o-audio-preview-2025-06-03"` - `"gpt-4o-mini-audio-preview"` - `"gpt-4o-mini-audio-preview-2024-12-17"` - `"gpt-4o-search-preview"` - `"gpt-4o-mini-search-preview"` - `"gpt-4o-search-preview-2025-03-11"` - `"gpt-4o-mini-search-preview-2025-03-11"` - `"chatgpt-4o-latest"` - `"codex-mini-latest"` - `"gpt-4o-mini"` - `"gpt-4o-mini-2024-07-18"` - `"gpt-4-turbo"` - `"gpt-4-turbo-2024-04-09"` - `"gpt-4-0125-preview"` - `"gpt-4-turbo-preview"` - `"gpt-4-1106-preview"` - `"gpt-4-vision-preview"` - `"gpt-4"` - `"gpt-4-0314"` - `"gpt-4-0613"` - `"gpt-4-32k"` - `"gpt-4-32k-0314"` - `"gpt-4-32k-0613"` - `"gpt-3.5-turbo"` - `"gpt-3.5-turbo-16k"` - `"gpt-3.5-turbo-0301"` - `"gpt-3.5-turbo-0613"` - `"gpt-3.5-turbo-1106"` - `"gpt-3.5-turbo-0125"` - `"gpt-3.5-turbo-16k-0613"` - `ResponsesOnlyModel = "o1-pro" or "o1-pro-2025-03-19" or "o3-pro" or 16 more` - `"o1-pro"` - `"o1-pro-2025-03-19"` - `"o3-pro"` - `"o3-pro-2025-06-10"` - `"o3-deep-research"` - `"o3-deep-research-2025-06-26"` - `"o4-mini-deep-research"` - `"o4-mini-deep-research-2025-06-26"` - `"computer-use-preview"` - `"computer-use-preview-2025-03-11"` - `"gpt-5.5-pro"` - `"gpt-5.5-pro-2026-04-23"` - `"gpt-5-codex"` - `"gpt-5-pro"` - `"gpt-5-pro-2025-10-06"` - `"gpt-5.1-codex-max"` - `"gpt-daybreak-blue-latest"` - `"gpt-daybreak-red-latest"` - `"gpt-5.6-cyber"` - `moderation: optional object { model, policy } or null` Configuration for running moderation on the input and output of this response. - `model: string` The moderation model to use for moderated completions, e.g. 'omni-moderation-latest'. - `policy: optional object { input, output } or null` The policy to apply to moderated response input and output. - `input: optional object { mode } or null` The moderation policy for the response input. - `mode: "score" or "block"` - `"score"` - `"block"` - `output: optional object { mode } or null` The moderation policy for the response output. - `mode: "score" or "block"` - `"score"` - `"block"` - `parallel_tool_calls: optional boolean or null` Whether to allow the model to run tool calls in parallel. - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `prompt: optional ResponsePrompt or null` Reference to a prompt template and its variables. [Learn more](/docs/guides/text?api-mode=responses#reusable-prompts). - `id: string` The unique identifier of the prompt template to use. - `variables: optional map[string or ResponseInputText or ResponseInputImage or ResponseInputFile] or null` Optional map of values to substitute in for variables in your prompt. The substitution values can either be strings, or other Response input types like images or files. - `string` - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `version: optional string or null` Optional version of the prompt template. - `prompt_cache_key: optional string or null` Used by OpenAI to cache responses for similar requests to optimize your cache hit rates. Replaces the `user` field. [Learn more](/docs/guides/prompt-caching). - `prompt_cache_options: optional object { mode, ttl }` Options for prompt caching. Supported for `gpt-5.6` and later models. By default, OpenAI automatically chooses one implicit cache breakpoint. You can add explicit breakpoints to content blocks with `prompt_cache_breakpoint`. Each request can write up to four breakpoints. For cache matching, OpenAI considers up to the latest 80 breakpoints in the conversation, without a content-block lookback limit. Set `mode` to `explicit` to disable the implicit breakpoint. The `ttl` defaults to `30m`, which is currently the only supported value. See the [prompt caching guide](/docs/guides/prompt-caching) for current details. - `mode: optional "implicit" or "explicit"` Controls whether OpenAI automatically creates an implicit cache breakpoint. Defaults to `implicit`. With `implicit`, OpenAI creates one implicit breakpoint and writes up to the latest three explicit breakpoints in the request. With `explicit`, OpenAI does not create an implicit breakpoint and writes up to the latest four explicit breakpoints. If there are no explicit breakpoints, the request does not use prompt caching. - `"implicit"` - `"explicit"` - `ttl: optional "30m"` The minimum lifetime applied to every implicit and explicit cache breakpoint written by the request. Defaults to `30m`, which is currently the only supported value. The backend may retain cache entries for longer. - `"30m"` - `prompt_cache_retention: optional "in_memory" or "24h" or null` Deprecated. Use `prompt_cache_options.ttl` instead. The retention policy for the prompt cache. Set to `24h` to enable extended prompt caching, which keeps cached prefixes active for longer, up to a maximum of 24 hours. [Learn more](/docs/guides/prompt-caching#prompt-cache-retention). This field expresses a maximum retention policy, while `prompt_cache_options.ttl` expresses a minimum cache lifetime. The two fields are independent and do not interact. For `gpt-5.5`, `gpt-5.5-pro`, and future models, only `24h` is supported. For older models that support both `in_memory` and `24h`, the default depends on your organization's data retention policy: - Organizations without ZDR enabled default to `24h`. - Organizations with ZDR enabled default to `in_memory` when `prompt_cache_retention` is not specified. - `"in_memory"` - `"24h"` - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `safety_identifier: optional string or null` A stable identifier used to help detect users of your application that may be violating OpenAI's usage policies. The IDs should be a string that uniquely identifies each user, with a maximum length of 64 characters. We recommend hashing their username or email address, in order to avoid sending us any identifying information. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). - `service_tier: optional ServiceTier or null` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` - `store: optional boolean or null` Whether to store the generated model response for later retrieval via API. - `stream: optional boolean or null` If set to true, the model response data will be streamed to the client as it is generated using [server-sent events](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events#Event_stream_format). See the [Streaming section below](/docs/api-reference/responses-streaming) for more information. - `stream_id: optional string` The WebSocket lane for this response. Requests with the same `stream_id` are processed FIFO, and events for the response echo the same `stream_id`. `stream_id` controls routing; `previous_response_id` controls conversation lineage, so a new lane can fork from a response created on another lane. - `stream_options: optional object { include_obfuscation } or null` Options for streaming responses. Only set this when you set `stream: true`. - `include_obfuscation: optional boolean` When true, stream obfuscation will be enabled. Stream obfuscation adds random characters to an `obfuscation` field on streaming delta events to normalize payload sizes as a mitigation to certain side-channel attacks. These obfuscation fields are included by default, but add a small amount of overhead to the data stream. You can set `include_obfuscation` to false to optimize for bandwidth if you trust the network links between your application and the OpenAI API. - `temperature: optional number or null` What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or `top_p` but not both. - `text: optional ResponseTextConfig` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `tool_choice: optional ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more` How the model should select which tool (or tools) to use when generating a response. See the `tools` parameter to see how to specify which tools the model can call. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: optional array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. We support the following categories of tools: - **Built-in tools**: Tools that are provided by OpenAI that extend the model's capabilities, like [web search](/docs/guides/tools-web-search) or [file search](/docs/guides/tools-file-search). Learn more about [built-in tools](/docs/guides/tools). - **MCP Tools**: Integrations with third-party systems via custom MCP servers or predefined connectors such as Google Drive and SharePoint. Learn more about [MCP Tools](/docs/guides/tools-connectors-mcp). - **Function calls (custom tools)**: Functions that are defined by you, enabling the model to call your own code with strongly typed arguments and outputs. Learn more about [function calling](/docs/guides/function-calling). You can also use custom tools to call your own code. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `top_logprobs: optional number or null` An integer between 0 and 20 specifying the maximum number of most likely tokens to return at each token position, each with an associated log probability. In some cases, the number of returned tokens may be fewer than requested. - `top_p: optional number or null` An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or `temperature` but not both. - `truncation: optional "auto" or "disabled" or null` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` - `user: optional string` This field is being replaced by `safety_identifier` and `prompt_cache_key`. Use `prompt_cache_key` instead to maintain caching optimizations. A stable identifier for your end-users. Used to boost cache hit rates by better bucketing similar requests and to help OpenAI detect and prevent abuse. [Learn more](/docs/guides/safety-best-practices#safety-identifiers). ### Responses Server Event - `ResponsesServerEvent = ResponseAudioDeltaEvent or ResponseAudioDoneEvent or ResponseAudioTranscriptDeltaEvent or 55 more` Server events emitted by the Responses WebSocket server. - `ResponseAudioWsDelta = ResponseAudioDeltaEvent` Emitted when there is a partial audio response. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseAudioWsDone = ResponseAudioDoneEvent` Emitted when the audio response is complete. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseAudioTranscriptWsDelta = ResponseAudioTranscriptDeltaEvent` Emitted when there is a partial transcript of audio. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseAudioTranscriptWsDone = ResponseAudioTranscriptDoneEvent` Emitted when the full audio transcript is completed. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseCodeInterpreterCallCodeWsDelta = ResponseCodeInterpreterCallCodeDeltaEvent` Emitted when a partial code snippet is streamed by the code interpreter. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseCodeInterpreterCallCodeWsDone = ResponseCodeInterpreterCallCodeDoneEvent` Emitted when the code snippet is finalized by the code interpreter. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseCodeInterpreterCallWsCompleted = ResponseCodeInterpreterCallCompletedEvent` Emitted when the code interpreter call is completed. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseCodeInterpreterCallInWsProgress = ResponseCodeInterpreterCallInProgressEvent` Emitted when a code interpreter call is in progress. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseCodeInterpreterCallWsInterpreting = ResponseCodeInterpreterCallInterpretingEvent` Emitted when the code interpreter is actively interpreting the code snippet. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseWsCompleted = ResponseCompletedEvent` Emitted when the model response is complete. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseContentPartWsAdded = ResponseContentPartAddedEvent` Emitted when a new content part is added. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseContentPartWsDone = ResponseContentPartDoneEvent` Emitted when a content part is done. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseWsCreated = ResponseCreatedEvent` An event that is emitted when a response is created. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseFileSearchCallWsCompleted = ResponseFileSearchCallCompletedEvent` Emitted when a file search call is completed (results found). - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseFileSearchCallInWsProgress = ResponseFileSearchCallInProgressEvent` Emitted when a file search call is initiated. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseFileSearchCallWsSearching = ResponseFileSearchCallSearchingEvent` Emitted when a file search is currently searching. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseFunctionCallArgumentsWsDelta = ResponseFunctionCallArgumentsDeltaEvent` Emitted when there is a partial function-call arguments delta. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseFunctionCallArgumentsWsDone = ResponseFunctionCallArgumentsDoneEvent` Emitted when function-call arguments are finalized. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseShellCallCommandWsAdded = ResponseShellCallCommandAddedEvent` A streaming event that indicated a shell command was added to a tool call. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseShellCallCommandWsDelta = ResponseShellCallCommandDeltaEvent` A streaming event that indicated a shell command was incrementally updated. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseShellCallCommandWsDone = ResponseShellCallCommandDoneEvent` A streaming event that indicated a shell command was completed. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseShellCallOutputContentWsDelta = ResponseShellCallOutputContentDeltaEvent` A streaming event that indicated shell call output was incrementally added. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseShellCallOutputContentWsDone = ResponseShellCallOutputContentDoneEvent` A streaming event that indicated shell call output was completed. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseInWsProgress = ResponseInProgressEvent` Emitted when the response is in progress. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseWsFailed = ResponseFailedEvent` An event that is emitted when a response fails. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseWsIncomplete = ResponseIncompleteEvent` An event that is emitted when a response finishes as incomplete. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseOutputItemWsAdded = ResponseOutputItemAddedEvent` Emitted when a new output item is added. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseOutputItemWsDone = ResponseOutputItemDoneEvent` Emitted when an output item is marked done. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseReasoningSummaryPartWsAdded = ResponseReasoningSummaryPartAddedEvent` Emitted when a new reasoning summary part is added. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseReasoningSummaryPartWsDone = ResponseReasoningSummaryPartDoneEvent` Emitted when a reasoning summary part is completed. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseReasoningSummaryTextWsDelta = ResponseReasoningSummaryTextDeltaEvent` Emitted when a delta is added to a reasoning summary text. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseReasoningSummaryTextWsDone = ResponseReasoningSummaryTextDoneEvent` Emitted when a reasoning summary text is completed. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseReasoningTextWsDelta = ResponseReasoningTextDeltaEvent` Emitted when a delta is added to a reasoning text. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseReasoningTextWsDone = ResponseReasoningTextDoneEvent` Emitted when a reasoning text is completed. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseRefusalWsDelta = ResponseRefusalDeltaEvent` Emitted when there is a partial refusal text. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseRefusalWsDone = ResponseRefusalDoneEvent` Emitted when refusal text is finalized. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseTextWsDelta = ResponseTextDeltaEvent` Emitted when there is an additional text delta. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseTextWsDone = ResponseTextDoneEvent` Emitted when text content is finalized. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseWebSearchCallWsCompleted = ResponseWebSearchCallCompletedEvent` Emitted when a web search call is completed. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseWebSearchCallInWsProgress = ResponseWebSearchCallInProgressEvent` Emitted when a web search call is initiated. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseWebSearchCallWsSearching = ResponseWebSearchCallSearchingEvent` Emitted when a web search call is executing. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseImageGenCallWsCompleted = ResponseImageGenCallCompletedEvent` Emitted when an image generation tool call has completed and the final image is available. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseImageGenCallWsGenerating = ResponseImageGenCallGeneratingEvent` Emitted when an image generation tool call is actively generating an image (intermediate state). - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseImageGenCallInWsProgress = ResponseImageGenCallInProgressEvent` Emitted when an image generation tool call is in progress. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseImageGenCallPartialWsImage = ResponseImageGenCallPartialImageEvent` Emitted when a partial image is available during image generation streaming. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseMcpCallArgumentsWsDelta = ResponseMcpCallArgumentsDeltaEvent` Emitted when there is a delta (partial update) to the arguments of an MCP tool call. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseMcpCallArgumentsWsDone = ResponseMcpCallArgumentsDoneEvent` Emitted when the arguments for an MCP tool call are finalized. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseMcpCallWsCompleted = ResponseMcpCallCompletedEvent` Emitted when an MCP tool call has completed successfully. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseMcpCallWsFailed = ResponseMcpCallFailedEvent` Emitted when an MCP tool call has failed. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseMcpCallInWsProgress = ResponseMcpCallInProgressEvent` Emitted when an MCP tool call is in progress. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseMcpListToolsWsCompleted = ResponseMcpListToolsCompletedEvent` Emitted when the list of available MCP tools has been successfully retrieved. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseMcpListToolsWsFailed = ResponseMcpListToolsFailedEvent` Emitted when the attempt to list available MCP tools has failed. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseMcpListToolsInWsProgress = ResponseMcpListToolsInProgressEvent` Emitted when the system is in the process of retrieving the list of available MCP tools. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseOutputTextAnnotationWsAdded = ResponseOutputTextAnnotationAddedEvent` Emitted when an annotation is added to output text content. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseWsQueued = ResponseQueuedEvent` Emitted when a response is queued and waiting to be processed. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseCustomToolCallInputWsDelta = ResponseCustomToolCallInputDeltaEvent` Event representing a delta (partial update) to the input of a custom tool call. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseCustomToolCallInputWsDone = ResponseCustomToolCallInputDoneEvent` Event indicating that input for a custom tool call is complete. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. - `ResponseWsError object { error, type, sequence_number, 2 more }` Emitted when an error occurs while processing a Responses WebSocket request. - `error: object { code, message, param, 2 more }` Details about the error. - `code: string or null` The error code that was emitted, if any. - `message: string` The human-readable error message that was emitted. - `param: string or null` The parameter name that was associated with the error, if any. - `type: string` The error type that was emitted. - `headers: optional map[string]` The response headers that were emitted with the error, if any. - `type: "error"` The type of the event. Always `error`. - `"error"` - `sequence_number: optional number` The sequence number of an error emitted by the response stream. - `status: optional number` The HTTP status code associated with a WebSocket protocol error. - `stream_id: optional string` The WebSocket lane that emitted this event. This field is present when the originating `response.create` event supplied a `stream_id`. ### Service Tier - `ServiceTier = "auto" or "default" or "flex" or 4 more` Specifies the processing type used for serving the request. - If set to 'auto', then the request will be processed with the service tier configured in the Project settings. Unless otherwise configured, the Project will use 'default'. - If set to 'default', then the request will be processed with the standard pricing and performance for the selected model. - If set to '[flex](/docs/guides/flex-processing)', then the request will be processed with the Flex Processing service tier. - To opt-in to [Fast mode](/api/docs/guides/fast-mode) at the request level, include the `service_tier=fast` or `service_tier=priority` parameter for Responses or Chat Completions. The response will show `service_tier=priority` regardless of if you specify `service_tier=fast` or `priority` in your request. - If set to 'ultrafast', then the request will be processed with the access-controlled Ultrafast Processing service tier. This tier is currently available for `gpt-5.6-sol`; a response served through it will show `service_tier=ultrafast`. - When not set, the default behavior is 'auto'. When the `service_tier` parameter is set, the response body will include the `service_tier` value based on the processing mode actually used to serve the request. This response value may be different from the value set in the parameter. - `"auto"` - `"default"` - `"flex"` - `"scale"` - `"priority"` - `"fast"` - `"ultrafast"` ### Skill Reference - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. ### Tool Choice Allowed - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` ### Tool Choice Apply Patch - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` ### Tool Choice Custom - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` ### Tool Choice Function - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` ### Tool Choice Mcp - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. ### Tool Choice Options - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` ### Tool Choice Shell - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` ### Tool Choice Types - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` # Input Items ## List input items **get** `/responses/{response_id}/input_items` Returns a list of input items for a given response. ### Path Parameters - `response_id: string` ### Query Parameters - `after: optional string` An item ID to list items after, used in pagination. - `include: optional array of ResponseIncludable` Additional fields to include in the response. See the `include` parameter for Response creation above for more information. - `"file_search_call.results"` - `"web_search_call.results"` - `"web_search_call.action.sources"` - `"message.input_image.image_url"` - `"computer_call_output.output.image_url"` - `"code_interpreter_call.outputs"` - `"reasoning.encrypted_content"` - `"message.output_text.logprobs"` - `limit: optional number` A limit on the number of objects to be returned. Limit can range between 1 and 100, and the default is 20. - `order: optional "asc" or "desc"` The order to return the input items in. Default is `desc`. - `asc`: Return the input items in ascending order. - `desc`: Return the input items in descending order. - `"asc"` - `"desc"` ### Returns - `ResponseItemList object { data, first_id, has_more, 2 more }` A list of Response items. - `data: array of ResponseInputMessageItem or ResponseOutputMessage or object { id, queries, status, 2 more } or 26 more` A list of items used to generate this response. - `ResponseInputMessageItem object { id, content, role, 2 more }` - `id: string` The unique ID of the message input. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `type: "message"` The type of the message input. Always set to `message`. - `"message"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { id, arguments, call_id, 6 more }` - `id: string` The unique ID of the function tool call. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `namespace: optional string` The namespace of the function to run. - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCall object { id, call_id, input, 6 more }` - `id: string` The unique ID of the custom tool call item. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `first_id: string` The ID of the first item in the list. - `has_more: boolean` Whether there are more items available. - `last_id: string` The ID of the last item in the list. - `object: "list"` The type of object returned, must be `list`. - `"list"` ### Example ```http curl https://api.openai.com/v1/responses/$RESPONSE_ID/input_items \ -H "Authorization: Bearer $OPENAI_API_KEY" ``` #### Response ```json { "data": [ { "id": "id", "content": [ { "text": "text", "type": "input_text", "prompt_cache_breakpoint": { "mode": "explicit" } } ], "role": "user", "type": "message", "status": "in_progress" } ], "first_id": "first_id", "has_more": true, "last_id": "last_id", "object": "list" } ``` ### Example ```http curl https://api.openai.com/v1/responses/resp_abc123/input_items \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" ``` #### Response ```json { "object": "list", "data": [ { "id": "msg_abc123", "type": "message", "role": "user", "content": [ { "type": "input_text", "text": "Tell me a three sentence bedtime story about a unicorn." } ] } ], "first_id": "msg_abc123", "last_id": "msg_abc123", "has_more": false } ``` ## Domain Types ### Response Item List - `ResponseItemList object { data, first_id, has_more, 2 more }` A list of Response items. - `data: array of ResponseInputMessageItem or ResponseOutputMessage or object { id, queries, status, 2 more } or 26 more` A list of items used to generate this response. - `ResponseInputMessageItem object { id, content, role, 2 more }` - `id: string` The unique ID of the message input. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `type: "message"` The type of the message input. Always set to `message`. - `"message"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the computer call tool output. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `status: "completed" or "incomplete" or "failed" or "in_progress"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"completed"` - `"incomplete"` - `"failed"` - `"in_progress"` - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `acknowledged_safety_checks: optional array of object { id, code, message }` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `created_by: optional string` The identifier of the actor that created the item. - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { id, arguments, call_id, 6 more }` - `id: string` The unique ID of the function tool call. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `namespace: optional string` The namespace of the function to run. - `FunctionCallOutput object { id, output, status, 6 more }` - `id: string` The unique ID of the function call tool output. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the function call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the function call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the function call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `call_id: optional string` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `name: optional string` The name of the tool that produced the output. - `namespace: optional string` The namespace of the tool that produced the output. - `ToolSearchCall object { id, arguments, call_id, 4 more }` - `id: string` The unique ID of the tool search call item. - `arguments: unknown` Arguments used for the tool search call. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search call item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "tool_search_call"` The type of the item. Always `tool_search_call`. - `"tool_search_call"` - `created_by: optional string` The identifier of the actor that created the item. - `ToolSearchOutput object { id, call_id, execution, 4 more }` - `id: string` The unique ID of the tool search output item. - `call_id: string or null` The unique ID of the tool search call generated by the model. - `execution: "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: "in_progress" or "completed" or "incomplete"` The status of the tool search output item that was recorded. - `"in_progress"` - `"completed"` - `"incomplete"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by tool search. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The type of the item. Always `tool_search_output`. - `"tool_search_output"` - `created_by: optional string` The identifier of the actor that created the item. - `AdditionalTools object { id, role, tools, type }` - `id: string` The unique ID of the additional tools item. - `role: "unknown" or "user" or "assistant" or 5 more` The role that provided the additional tools. - `"unknown"` - `"user"` - `"assistant"` - `"system"` - `"critic"` - `"discriminator"` - `"developer"` - `"tool"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The additional tool definitions made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The type of the item. Always `additional_tools`. - `"additional_tools"` - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of the program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The type of the item. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of the program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output item. - `"completed"` - `"incomplete"` - `type: "program_output"` The type of the item. Always `program_output`. - `"program_output"` - `Compaction object { id, encrypted_content, type, created_by }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `id: string` The unique ID of the compaction item. - `encrypted_content: string` The encrypted content that was produced by compaction. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `created_by: optional string` The identifier of the actor that created the item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { id, action, call_id, 5 more }` A tool call that executes one or more shell commands in a managed environment. - `id: string` The unique ID of the shell tool call. Populated when this item is returned via API. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` - `max_output_length: number or null` Optional maximum number of characters to return from each command. - `timeout_ms: number or null` Optional timeout in milliseconds for the commands. - `call_id: string` The unique ID of the shell tool call generated by the model. - `environment: ResponseLocalEnvironment or ResponseContainerReference or null` Represents the use of a local environment to perform shell actions. - `ResponseLocalEnvironment object { type }` Represents the use of a local environment to perform shell actions. - `type: "local"` The environment type. Always `local`. - `"local"` - `ResponseContainerReference object { container_id, type }` Represents a container created with /v1/containers. - `container_id: string` - `type: "container_reference"` The environment type. Always `container_reference`. - `"container_reference"` - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ShellCallOutput object { id, call_id, max_output_length, 5 more }` The output of a shell tool call that was emitted. - `id: string` The unique ID of the shell call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the shell tool call generated by the model. - `max_output_length: number or null` The maximum length of the shell command output. This is generated by the model and should be passed back with the raw output. - `output: array of object { outcome, stderr, stdout, created_by }` An array of shell call output contents - `outcome: object { type } or object { exit_code, type }` Represents either an exit outcome (with an exit code) or a timeout outcome for a shell call output chunk. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` Exit code from the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` The standard error output that was captured. - `stdout: string` The standard output that was captured. - `created_by: optional string` The identifier of the actor that created the item. - `status: "in_progress" or "completed" or "incomplete"` The status of the shell call output. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "shell_call_output"` The type of the shell call output. Always `shell_call_output`. - `"shell_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `ApplyPatchCall object { id, call_id, operation, 4 more }` A tool call that applies file diffs by creating, deleting, or updating files. - `id: string` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` One of the create_file, delete_file, or update_file operations applied via apply_patch. - `CreateFile object { diff, path, type }` Instruction describing how to create a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to create. - `type: "create_file"` Create a new file with the provided diff. - `"create_file"` - `DeleteFile object { path, type }` Instruction describing how to delete a file via the apply_patch tool. - `path: string` Path of the file to delete. - `type: "delete_file"` Delete the specified file. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction describing how to update a file via the apply_patch tool. - `diff: string` Diff to apply. - `path: string` Path of the file to update. - `type: "update_file"` Update an existing file with the provided diff. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call. - `ApplyPatchCallOutput object { id, call_id, status, 4 more }` The output emitted by an apply patch tool call. - `id: string` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The ID of the entity that created this tool call output. - `output: optional string or null` Optional textual output returned by the apply patch tool. - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { id, approval_request_id, approve, 2 more }` A response to an MCP approval request. - `id: string` The unique ID of the approval response - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCall object { id, call_id, input, 6 more }` - `id: string` The unique ID of the custom tool call item. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `namespace: optional string` The namespace of the custom tool being called. - `CustomToolCallOutput object { id, call_id, output, 4 more }` - `id: string` The unique ID of the custom tool call output item. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `created_by: optional string` The identifier of the actor that created the item. - `first_id: string` The ID of the first item in the list. - `has_more: boolean` Whether there are more items available. - `last_id: string` The ID of the last item in the list. - `object: "list"` The type of object returned, must be `list`. - `"list"` # Input Tokens ## Get input token counts **post** `/responses/input_tokens` Returns input token counts of the request. Returns an object with `object` set to `response.input_tokens` and an `input_tokens` count. ### Body Parameters - `conversation: optional string or ResponseConversationParam or null` The conversation that this response belongs to. Items from this conversation are prepended to `input_items` for this response request. Input items and output items from this response are automatically added to this conversation after this response completes. - `ConversationID = string` The unique ID of the conversation. - `ResponseConversationParam object { id }` The conversation that this response belongs to. - `id: string` The unique ID of the conversation. - `input: optional string or array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more or null` Text, image, or file inputs to the model, used to generate a response - `string` A text input to the model, equivalent to a text input with the `user` role. - `array of EasyInputMessage or object { content, role, status, type } or ResponseOutputMessage or 29 more` A list of one or many input items to the model, containing different content types. - `EasyInputMessage object { content, role, phase, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. Messages with the `assistant` role are presumed to have been generated by the model in previous interactions. - `content: string or ResponseInputMessageContentList` Text, image, or audio input to the model, used to generate a response. Can also contain previous assistant responses. - `TextInput = string` A text input to the model. - `ResponseInputMessageContentList = array of ResponseInputContent` A list of one or many input items to the model, containing different content types. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `detail: ImageDetail` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `"low"` - `"high"` - `"auto"` - `"original"` - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string` The content of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string` The URL of the file to be sent to the model. - `filename: optional string` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode }` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `role: "user" or "assistant" or "system" or "developer"` The role of the message input. One of `user`, `assistant`, `system`, or `developer`. - `"user"` - `"assistant"` - `"system"` - `"developer"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `type: optional "message"` The type of the message input. Always `message`. - `"message"` - `Message object { content, role, status, type }` A message input to the model with a role indicating instruction following hierarchy. Instructions given with the `developer` or `system` role take precedence over instructions given with the `user` role. - `content: ResponseInputMessageContentList` A list of one or many input items to the model, containing different content types. - `role: "user" or "system" or "developer"` The role of the message input. One of `user`, `system`, or `developer`. - `"user"` - `"system"` - `"developer"` - `status: optional "in_progress" or "completed" or "incomplete"` The status of item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: optional "message"` The type of the message input. Always set to `message`. - `"message"` - `ResponseOutputMessage object { id, content, role, 3 more }` An output message from the model. - `id: string` The unique ID of the output message. - `content: array of ResponseOutputText or ResponseOutputRefusal` The content of the output message. - `ResponseOutputText object { annotations, logprobs, text, type }` A text output from the model. - `annotations: array of object { file_id, filename, index, type } or object { end_index, start_index, title, 2 more } or object { container_id, end_index, file_id, 3 more } or object { file_id, index, type }` The annotations of the text output. - `FileCitation object { file_id, filename, index, type }` A citation to a file. - `file_id: string` The ID of the file. - `filename: string` The filename of the file cited. - `index: number` The index of the file in the list of files. - `type: "file_citation"` The type of the file citation. Always `file_citation`. - `"file_citation"` - `URLCitation object { end_index, start_index, title, 2 more }` A citation for a web resource used to generate a model response. - `end_index: number` The index of the last character of the URL citation in the message. - `start_index: number` The index of the first character of the URL citation in the message. - `title: string` The title of the web resource. - `type: "url_citation"` The type of the URL citation. Always `url_citation`. - `"url_citation"` - `url: string` The URL of the web resource. - `ContainerFileCitation object { container_id, end_index, file_id, 3 more }` A citation for a container file used to generate a model response. - `container_id: string` The ID of the container file. - `end_index: number` The index of the last character of the container file citation in the message. - `file_id: string` The ID of the file. - `filename: string` The filename of the container file cited. - `start_index: number` The index of the first character of the container file citation in the message. - `type: "container_file_citation"` The type of the container file citation. Always `container_file_citation`. - `"container_file_citation"` - `FilePath object { file_id, index, type }` A path to a file. - `file_id: string` The ID of the file. - `index: number` The index of the file in the list of files. - `type: "file_path"` The type of the file path. Always `file_path`. - `"file_path"` - `logprobs: array of object { token, bytes, logprob, top_logprobs }` - `token: string` - `bytes: array of number` - `logprob: number` - `top_logprobs: array of object { token, bytes, logprob }` - `token: string` - `bytes: array of number` - `logprob: number` - `text: string` The text output from the model. - `type: "output_text"` The type of the output text. Always `output_text`. - `"output_text"` - `ResponseOutputRefusal object { refusal, type }` A refusal from the model. - `refusal: string` The refusal explanation from the model. - `type: "refusal"` The type of the refusal. Always `refusal`. - `"refusal"` - `role: "assistant"` The role of the output message. Always `assistant`. - `"assistant"` - `status: "in_progress" or "completed" or "incomplete"` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "message"` The type of the output message. Always `message`. - `"message"` - `phase: optional "commentary" or "final_answer" or null` Labels an `assistant` message as intermediate commentary (`commentary`) or the final answer (`final_answer`). For models like `gpt-5.3-codex` and beyond, when sending follow-up requests, preserve and resend phase on all assistant messages — dropping it can degrade performance. Not used for user messages. - `"commentary"` - `"final_answer"` - `FileSearchCall object { id, queries, status, 2 more }` The results of a file search tool call. See the [file search guide](/docs/guides/tools-file-search) for more information. - `id: string` The unique ID of the file search tool call. - `queries: array of string` The queries used to search for files. - `status: "in_progress" or "searching" or "completed" or 2 more` The status of the file search tool call. One of `in_progress`, `searching`, `incomplete` or `failed`, - `"in_progress"` - `"searching"` - `"completed"` - `"incomplete"` - `"failed"` - `type: "file_search_call"` The type of the file search tool call. Always `file_search_call`. - `"file_search_call"` - `results: optional array of object { attributes, file_id, filename, 2 more } or null` The results of the file search tool call. - `attributes: optional map[string or number or boolean] or null` Set of 16 key-value pairs that can be attached to an object. This can be useful for storing additional information about the object in a structured format, and querying for objects via API or the dashboard. Keys are strings with a maximum length of 64 characters. Values are strings with a maximum length of 512 characters, booleans, or numbers. - `string` - `number` - `boolean` - `file_id: optional string` The unique ID of the file. - `filename: optional string` The name of the file. - `score: optional number` The relevance score of the file - a value between 0 and 1. - `text: optional string` The text that was retrieved from the file. - `ComputerCall object { id, call_id, pending_safety_checks, 4 more }` A tool call to a computer use tool. See the [computer use guide](/docs/guides/tools-computer-use) for more information. - `id: string` The unique ID of the computer call. - `call_id: string` An identifier used when responding to the tool call with output. - `pending_safety_checks: array of object { id, code, message }` The pending safety checks for the computer call. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "computer_call"` The type of the computer call. Always `computer_call`. - `"computer_call"` - `action: optional ComputerAction` A click action. - `Click object { button, type, x, 2 more }` A click action. - `button: "left" or "right" or "wheel" or 2 more` Indicates which mouse button was pressed during the click. One of `left`, `right`, `wheel`, `back`, or `forward`. - `"left"` - `"right"` - `"wheel"` - `"back"` - `"forward"` - `type: "click"` Specifies the event type. For a click action, this property is always `click`. - `"click"` - `x: number` The x-coordinate where the click occurred. - `y: number` The y-coordinate where the click occurred. - `keys: optional array of string or null` The keys being held while clicking. - `DoubleClick object { keys, type, x, y }` A double click action. - `keys: array of string or null` The keys being held while double-clicking. - `type: "double_click"` Specifies the event type. For a double click action, this property is always set to `double_click`. - `"double_click"` - `x: number` The x-coordinate where the double click occurred. - `y: number` The y-coordinate where the double click occurred. - `Drag object { path, type, keys }` A drag action. - `path: array of object { x, y }` An array of coordinates representing the path of the drag action. Coordinates will appear as an array of objects, eg ``` [ { x: 100, y: 200 }, { x: 200, y: 300 } ] ``` - `x: number` The x-coordinate. - `y: number` The y-coordinate. - `type: "drag"` Specifies the event type. For a drag action, this property is always set to `drag`. - `"drag"` - `keys: optional array of string or null` The keys being held while dragging the mouse. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `keys: array of string` The combination of keys the model is requesting to be pressed. This is an array of strings, each representing a key. - `type: "keypress"` Specifies the event type. For a keypress action, this property is always set to `keypress`. - `"keypress"` - `Move object { type, x, y, keys }` A mouse move action. - `type: "move"` Specifies the event type. For a move action, this property is always set to `move`. - `"move"` - `x: number` The x-coordinate to move to. - `y: number` The y-coordinate to move to. - `keys: optional array of string or null` The keys being held while moving the mouse. - `Screenshot object { type }` A screenshot action. - `type: "screenshot"` Specifies the event type. For a screenshot action, this property is always set to `screenshot`. - `"screenshot"` - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `scroll_x: number` The horizontal scroll distance. - `scroll_y: number` The vertical scroll distance. - `type: "scroll"` Specifies the event type. For a scroll action, this property is always set to `scroll`. - `"scroll"` - `x: number` The x-coordinate where the scroll occurred. - `y: number` The y-coordinate where the scroll occurred. - `keys: optional array of string or null` The keys being held while scrolling. - `Type object { text, type }` An action to type in text. - `text: string` The text to type. - `type: "type"` Specifies the event type. For a type action, this property is always set to `type`. - `"type"` - `Wait object { type }` A wait action. - `type: "wait"` Specifies the event type. For a wait action, this property is always set to `wait`. - `"wait"` - `actions: optional ComputerActionList` Flattened batched actions for `computer_use`. Each action includes an `type` discriminator and action-specific fields. - `Click object { button, type, x, 2 more }` A click action. - `DoubleClick object { keys, type, x, y }` A double click action. - `Drag object { path, type, keys }` A drag action. - `Keypress object { keys, type }` A collection of keypresses the model would like to perform. - `Move object { type, x, y, keys }` A mouse move action. - `Screenshot object { type }` A screenshot action. - `Scroll object { scroll_x, scroll_y, type, 3 more }` A scroll action. - `Type object { text, type }` An action to type in text. - `Wait object { type }` A wait action. - `ComputerCallOutput object { call_id, output, type, 3 more }` The output of a computer tool call. - `call_id: string` The ID of the computer tool call that produced the output. - `output: ResponseComputerToolCallOutputScreenshot` A computer screenshot image used with the computer use tool. - `type: "computer_screenshot"` Specifies the event type. For a computer screenshot, this property is always set to `computer_screenshot`. - `"computer_screenshot"` - `file_id: optional string` The identifier of an uploaded file that contains the screenshot. - `image_url: optional string` The URL of the screenshot image. - `type: "computer_call_output"` The type of the computer tool call output. Always `computer_call_output`. - `"computer_call_output"` - `id: optional string or null` The ID of the computer tool call output. - `acknowledged_safety_checks: optional array of object { id, code, message } or null` The safety checks reported by the API that have been acknowledged by the developer. - `id: string` The ID of the pending safety check. - `code: optional string or null` The type of the pending safety check. - `message: optional string or null` Details about the pending safety check. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the message input. One of `in_progress`, `completed`, or `incomplete`. Populated when input items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `WebSearchCall object { id, action, status, type }` The results of a web search tool call. See the [web search guide](/docs/guides/tools-web-search) for more information. - `id: string` The unique ID of the web search tool call. - `action: object { type, queries, query, sources } or object { type, url } or object { pattern, type, url }` An object describing the specific action taken in this web search call. Includes details on how the model used the web (search, open_page, find_in_page). - `Search object { type, queries, query, sources }` Action type "search" - Performs a web search query. - `type: "search"` The action type. - `"search"` - `queries: optional array of string` The search queries. - `query: optional string` The search query. - `sources: optional array of object { type, url }` The sources used in the search. - `type: "url"` The type of source. Always `url`. - `"url"` - `url: string` The URL of the source. - `OpenPage object { type, url }` Action type "open_page" - Opens a specific URL from search results. - `type: "open_page"` The action type. - `"open_page"` - `url: optional string or null` The URL opened by the model. - `FindInPage object { pattern, type, url }` Action type "find_in_page": Searches for a pattern within a loaded page. - `pattern: string` The pattern or text to search for within the page. - `type: "find_in_page"` The action type. - `"find_in_page"` - `url: string` The URL of the page searched for the pattern. - `status: "in_progress" or "searching" or "completed" or "failed"` The status of the web search tool call. - `"in_progress"` - `"searching"` - `"completed"` - `"failed"` - `type: "web_search_call"` The type of the web search tool call. Always `web_search_call`. - `"web_search_call"` - `FunctionCall object { arguments, call_id, name, 5 more }` A tool call to run a function. See the [function calling guide](/docs/guides/function-calling) for more information. - `arguments: string` A JSON string of the arguments to pass to the function. - `call_id: string` The unique ID of the function tool call generated by the model. - `name: string` The name of the function to run. - `type: "function_call"` The type of the function tool call. Always `function_call`. - `"function_call"` - `id: optional string` The unique ID of the function tool call. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the function to run. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `FunctionCallOutput object { output, type, id, 5 more }` The output of a function tool call. - `output: string or array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` Text, image, or file output of the function tool call. - `string` A JSON string of the output of the function tool call. - `array of ResponseInputTextContent or ResponseInputImageContent or ResponseInputFileContent` An array of content outputs (text, image, file) for the function tool call. - `ResponseInputTextContent object { text, type, prompt_cache_breakpoint }` A text input to the model. - `text: string` The text input to the model. - `type: "input_text"` The type of the input item. Always `input_text`. - `"input_text"` - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputImageContent object { type, detail, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision) - `type: "input_image"` The type of the input item. Always `input_image`. - `"input_image"` - `detail: optional ImageDetail or null` The detail level of the image to be sent to the model. One of `high`, `low`, `auto`, or `original`. Defaults to `auto`. - `file_id: optional string or null` The ID of the file to be sent to the model. - `image_url: optional string or null` The URL of the image to be sent to the model. A fully qualified URL or base64 encoded image in a data URL. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `ResponseInputFileContent object { type, detail, file_data, 4 more }` A file input to the model. - `type: "input_file"` The type of the input item. Always `input_file`. - `"input_file"` - `detail: optional "auto" or "low" or "high"` The detail level of the file to be sent to the model. Use `auto` to let the system select the detail level; for GPT-5.6 and later models, `auto` uses high-quality rendering, which may increase input token usage. Use `low` for lower-cost rendering, or `high` to render the file at higher quality. Defaults to `auto`. - `"auto"` - `"low"` - `"high"` - `file_data: optional string or null` The base64-encoded data of the file to be sent to the model. - `file_id: optional string or null` The ID of the file to be sent to the model. - `file_url: optional string or null` The URL of the file to be sent to the model. - `filename: optional string or null` The name of the file to be sent to the model. - `prompt_cache_breakpoint: optional object { mode } or null` Marks the exact end of a reusable prompt prefix. The breakpoint inherits its TTL from the request's `prompt_cache_options.ttl`; the boundary is not rounded to a token block. - `mode: "explicit"` The breakpoint mode. Always `explicit`. - `"explicit"` - `type: "function_call_output"` The type of the function tool call output. Always `function_call_output`. - `"function_call_output"` - `id: optional string or null` The unique ID of the function tool call output. Populated when this item is returned via API. - `call_id: optional string or null` The unique ID of the function tool call generated by the model. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `name: optional string or null` The name of the tool that produced the output. - `namespace: optional string or null` The namespace of the tool that produced the output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchCall object { arguments, type, id, 3 more }` - `arguments: unknown` The arguments supplied to the tool search call. - `type: "tool_search_call"` The item type. Always `tool_search_call`. - `"tool_search_call"` - `id: optional string or null` The unique ID of this tool search call. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search call. - `"in_progress"` - `"completed"` - `"incomplete"` - `ToolSearchOutput object { tools, type, id, 3 more }` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` The loaded tool definitions returned by the tool search output. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `key: string` The key to compare against the value. - `type: "eq" or "ne" or "gt" or 5 more` Specifies the comparison operator: `eq`, `ne`, `gt`, `gte`, `lt`, `lte`, `in`, `nin`. - `eq`: equals - `ne`: not equal - `gt`: greater than - `gte`: greater than or equal - `lt`: less than - `lte`: less than or equal - `in`: in - `nin`: not in - `"eq"` - `"ne"` - `"gt"` - `"gte"` - `"lt"` - `"lte"` - `"in"` - `"nin"` - `value: string or number or boolean or array of string or number` The value to compare against the attribute key; supports string, number, or boolean types. - `string` - `number` - `boolean` - `array of string or number` - `string` - `number` - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `filters: array of ComparisonFilter or unknown` Array of filters to combine. Items can be `ComparisonFilter` or `CompoundFilter`. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `unknown` - `type: "and" or "or"` Type of operation: `and` or `or`. - `"and"` - `"or"` - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `type: "disabled"` Disable outbound network access. Always `disabled`. - `"disabled"` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `allowed_domains: array of string` A list of allowed domains when type is `allowlist`. - `type: "allowlist"` Allow outbound network access only to specified domains. Always `allowlist`. - `"allowlist"` - `domain_secrets: optional array of ContainerNetworkPolicyDomainSecret` Optional domain-scoped secrets for allowlisted domains. - `domain: string` The domain associated with the secret. - `name: string` The name of the secret to inject for the domain. - `value: string` The secret value to inject for the domain. - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `type: "container_auto"` Automatically creates a container for this request - `"container_auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `skills: optional array of SkillReference or InlineSkill` An optional list of skills referenced by id or inline data. - `SkillReference object { skill_id, type, version }` - `skill_id: string` The ID of the referenced skill. - `type: "skill_reference"` References a skill created with the /v1/skills endpoint. - `"skill_reference"` - `version: optional string` Optional skill version. Use a positive integer or 'latest'. Omit for default. - `InlineSkill object { description, name, source, type }` - `description: string` The description of the skill. - `name: string` The name of the skill. - `source: InlineSkillSource` Inline skill payload - `data: string` Base64-encoded skill zip bundle. - `media_type: "application/zip"` The media type of the inline skill payload. Must be `application/zip`. - `"application/zip"` - `type: "base64"` The type of the inline skill source. Must be `base64`. - `"base64"` - `type: "inline"` Defines an inline skill for this request. - `"inline"` - `LocalEnvironment object { type, skills }` - `type: "local"` Use a local computer environment. - `"local"` - `skills: optional array of LocalSkill` An optional list of skills. - `description: string` The description of the skill. - `name: string` The name of the skill. - `path: string` The path to the directory containing the skill. - `ContainerReference object { container_id, type }` - `container_id: string` The ID of the referenced container. - `type: "container_reference"` References a container created with the /v1/containers endpoint - `"container_reference"` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Text object { type }` Unconstrained free-form text. - `type: "text"` Unconstrained text format. Always `text`. - `"text"` - `Grammar object { definition, syntax, type }` A grammar defined by the user. - `definition: string` The grammar definition. - `syntax: "lark" or "regex"` The syntax of the grammar definition. One of `lark` or `regex`. - `"lark"` - `"regex"` - `type: "grammar"` Grammar format. Always `grammar`. - `"grammar"` - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "tool_search_output"` The item type. Always `tool_search_output`. - `"tool_search_output"` - `id: optional string or null` The unique ID of this tool search output. - `call_id: optional string or null` The unique ID of the tool search call generated by the model. - `execution: optional "server" or "client"` Whether tool search was executed by the server or by the client. - `"server"` - `"client"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the tool search output. - `"in_progress"` - `"completed"` - `"incomplete"` - `AdditionalTools object { role, tools, type, id }` - `role: "developer"` The role that provided the additional tools. Only `developer` is supported. - `"developer"` - `tools: array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more` A list of additional tools made available at this item. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `type: "additional_tools"` The item type. Always `additional_tools`. - `"additional_tools"` - `id: optional string or null` The unique ID of this additional tools item. - `Reasoning object { id, summary, type, 3 more }` A description of the chain of thought used by a reasoning model while generating a response. Be sure to include these items in your `input` to the Responses API for subsequent turns of a conversation if you are manually [managing context](/docs/guides/conversation-state). - `id: string` The unique identifier of the reasoning content. - `summary: array of SummaryTextContent` Reasoning summary content. - `text: string` A summary of the reasoning output from the model so far. - `type: "summary_text"` The type of the object. Always `summary_text`. - `"summary_text"` - `type: "reasoning"` The type of the object. Always `reasoning`. - `"reasoning"` - `content: optional array of object { text, type }` Reasoning text content. - `text: string` The reasoning text from the model. - `type: "reasoning_text"` The type of the reasoning text. Always `reasoning_text`. - `"reasoning_text"` - `encrypted_content: optional string or null` The encrypted content of the reasoning item. This is populated by default for reasoning items returned by `POST /v1/responses` and WebSocket `response.create` requests. When streaming, use the completed reasoning item and its `encrypted_content` from the `response.output_item.done` event in subsequent requests. The `encrypted_content` in `response.output_item.added` may be incomplete. This is especially important when `store` is `false` or when using Zero Data Retention. - `status: optional "in_progress" or "completed" or "incomplete"` The status of the item. One of `in_progress`, `completed`, or `incomplete`. Populated when items are returned via API. - `"in_progress"` - `"completed"` - `"incomplete"` - `Compaction object { encrypted_content, type, id }` A compaction item generated by the [`v1/responses/compact` API](/docs/api-reference/responses/compact). - `encrypted_content: string` The encrypted content of the compaction summary. - `type: "compaction"` The type of the item. Always `compaction`. - `"compaction"` - `id: optional string or null` The ID of the compaction item. - `ImageGenerationCall object { id, result, status, type }` An image generation request made by the model. - `id: string` The unique ID of the image generation call. - `result: string or null` The generated image encoded in base64. - `status: "in_progress" or "completed" or "generating" or "failed"` The status of the image generation call. - `"in_progress"` - `"completed"` - `"generating"` - `"failed"` - `type: "image_generation_call"` The type of the image generation call. Always `image_generation_call`. - `"image_generation_call"` - `CodeInterpreterCall object { id, code, container_id, 3 more }` A tool call to run code. - `id: string` The unique ID of the code interpreter tool call. - `code: string or null` The code to run, or null if not available. - `container_id: string` The ID of the container used to run the code. - `outputs: array of object { logs, type } or object { type, url } or null` The outputs generated by the code interpreter, such as logs or images. Can be null if no outputs are available. - `Logs object { logs, type }` The logs output from the code interpreter. - `logs: string` The logs output from the code interpreter. - `type: "logs"` The type of the output. Always `logs`. - `"logs"` - `Image object { type, url }` The image output from the code interpreter. - `type: "image"` The type of the output. Always `image`. - `"image"` - `url: string` The URL of the image output from the code interpreter. - `status: "in_progress" or "completed" or "incomplete" or 2 more` The status of the code interpreter tool call. Valid values are `in_progress`, `completed`, `incomplete`, `interpreting`, and `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"interpreting"` - `"failed"` - `type: "code_interpreter_call"` The type of the code interpreter tool call. Always `code_interpreter_call`. - `"code_interpreter_call"` - `LocalShellCall object { id, action, call_id, 2 more }` A tool call to run a command on the local shell. - `id: string` The unique ID of the local shell call. - `action: object { command, env, type, 3 more }` Execute a shell command on the server. - `command: array of string` The command to run. - `env: map[string]` Environment variables to set for the command. - `type: "exec"` The type of the local shell action. Always `exec`. - `"exec"` - `timeout_ms: optional number or null` Optional timeout in milliseconds for the command. - `user: optional string or null` Optional user to run the command as. - `working_directory: optional string or null` Optional working directory to run the command in. - `call_id: string` The unique ID of the local shell tool call generated by the model. - `status: "in_progress" or "completed" or "incomplete"` The status of the local shell call. - `"in_progress"` - `"completed"` - `"incomplete"` - `type: "local_shell_call"` The type of the local shell call. Always `local_shell_call`. - `"local_shell_call"` - `LocalShellCallOutput object { id, output, type, status }` The output of a local shell tool call. - `id: string` The unique ID of the local shell tool call generated by the model. - `output: string` A JSON string of the output of the local shell tool call. - `type: "local_shell_call_output"` The type of the local shell tool call output. Always `local_shell_call_output`. - `"local_shell_call_output"` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the item. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCall object { action, call_id, type, 4 more }` A tool representing a request to execute one or more shell commands. - `action: object { commands, max_output_length, timeout_ms }` The shell commands and limits that describe how to run the tool call. - `commands: array of string` Ordered shell commands for the execution environment to run. - `max_output_length: optional number or null` Maximum number of UTF-8 characters to capture from combined stdout and stderr output. - `timeout_ms: optional number or null` Maximum wall-clock time in milliseconds to allow the shell commands to run. - `call_id: string` The unique ID of the shell tool call generated by the model. - `type: "shell_call"` The type of the item. Always `shell_call`. - `"shell_call"` - `id: optional string or null` The unique ID of the shell tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `environment: optional LocalEnvironment or ContainerReference or null` The environment to execute the shell commands in. - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call. One of `in_progress`, `completed`, or `incomplete`. - `"in_progress"` - `"completed"` - `"incomplete"` - `ShellCallOutput object { call_id, output, type, 4 more }` The streamed output items emitted by a shell tool call. - `call_id: string` The unique ID of the shell tool call generated by the model. - `output: array of ResponseFunctionShellCallOutputContent` Captured chunks of stdout and stderr output, along with their associated outcomes. - `outcome: object { type } or object { exit_code, type }` The exit or timeout outcome associated with this shell call. - `Timeout object { type }` Indicates that the shell call exceeded its configured time limit. - `type: "timeout"` The outcome type. Always `timeout`. - `"timeout"` - `Exit object { exit_code, type }` Indicates that the shell commands finished and returned an exit code. - `exit_code: number` The exit code returned by the shell process. - `type: "exit"` The outcome type. Always `exit`. - `"exit"` - `stderr: string` Captured stderr output for the shell call. - `stdout: string` Captured stdout output for the shell call. - `type: "shell_call_output"` The type of the item. Always `shell_call_output`. - `"shell_call_output"` - `id: optional string or null` The unique ID of the shell tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `max_output_length: optional number or null` The maximum number of UTF-8 characters captured for this shell call's combined output. - `status: optional "in_progress" or "completed" or "incomplete" or null` The status of the shell call output. - `"in_progress"` - `"completed"` - `"incomplete"` - `ApplyPatchCall object { call_id, operation, status, 3 more }` A tool call representing a request to create, delete, or update files using diff patches. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `operation: object { diff, path, type } or object { path, type } or object { diff, path, type }` The specific create, delete, or update instruction for the apply_patch tool call. - `CreateFile object { diff, path, type }` Instruction for creating a new file via the apply_patch tool. - `diff: string` Unified diff content to apply when creating the file. - `path: string` Path of the file to create relative to the workspace root. - `type: "create_file"` The operation type. Always `create_file`. - `"create_file"` - `DeleteFile object { path, type }` Instruction for deleting an existing file via the apply_patch tool. - `path: string` Path of the file to delete relative to the workspace root. - `type: "delete_file"` The operation type. Always `delete_file`. - `"delete_file"` - `UpdateFile object { diff, path, type }` Instruction for updating an existing file via the apply_patch tool. - `diff: string` Unified diff content to apply to the existing file. - `path: string` Path of the file to update relative to the workspace root. - `type: "update_file"` The operation type. Always `update_file`. - `"update_file"` - `status: "in_progress" or "completed"` The status of the apply patch tool call. One of `in_progress` or `completed`. - `"in_progress"` - `"completed"` - `type: "apply_patch_call"` The type of the item. Always `apply_patch_call`. - `"apply_patch_call"` - `id: optional string or null` The unique ID of the apply patch tool call. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `ApplyPatchCallOutput object { call_id, status, type, 3 more }` The streamed output emitted by an apply patch tool call. - `call_id: string` The unique ID of the apply patch tool call generated by the model. - `status: "completed" or "failed"` The status of the apply patch tool call output. One of `completed` or `failed`. - `"completed"` - `"failed"` - `type: "apply_patch_call_output"` The type of the item. Always `apply_patch_call_output`. - `"apply_patch_call_output"` - `id: optional string or null` The unique ID of the apply patch tool call output. Populated when this item is returned via API. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `output: optional string or null` Optional human-readable log text from the apply patch tool (e.g., patch results or errors). - `McpListTools object { id, server_label, tools, 2 more }` A list of tools available on an MCP server. - `id: string` The unique ID of the list. - `server_label: string` The label of the MCP server. - `tools: array of object { input_schema, name, annotations, description }` The tools available on the server. - `input_schema: unknown` The JSON schema describing the tool's input. - `name: string` The name of the tool. - `annotations: optional unknown or null` Additional annotations about the tool. - `description: optional string or null` The description of the tool. - `type: "mcp_list_tools"` The type of the item. Always `mcp_list_tools`. - `"mcp_list_tools"` - `error: optional string or null` Error message if the server could not list tools. - `McpApprovalRequest object { id, arguments, name, 2 more }` A request for human approval of a tool invocation. - `id: string` The unique ID of the approval request. - `arguments: string` A JSON string of arguments for the tool. - `name: string` The name of the tool to run. - `server_label: string` The label of the MCP server making the request. - `type: "mcp_approval_request"` The type of the item. Always `mcp_approval_request`. - `"mcp_approval_request"` - `McpApprovalResponse object { approval_request_id, approve, type, 2 more }` A response to an MCP approval request. - `approval_request_id: string` The ID of the approval request being answered. - `approve: boolean` Whether the request was approved. - `type: "mcp_approval_response"` The type of the item. Always `mcp_approval_response`. - `"mcp_approval_response"` - `id: optional string or null` The unique ID of the approval response - `reason: optional string or null` Optional reason for the decision. - `McpCall object { id, arguments, name, 6 more }` An invocation of a tool on an MCP server. - `id: string` The unique ID of the tool call. - `arguments: string` A JSON string of the arguments passed to the tool. - `name: string` The name of the tool that was run. - `server_label: string` The label of the MCP server running the tool. - `type: "mcp_call"` The type of the item. Always `mcp_call`. - `"mcp_call"` - `approval_request_id: optional string or null` Unique identifier for the MCP tool call approval request. Include this value in a subsequent `mcp_approval_response` input to approve or reject the corresponding tool call. - `error: optional McpToolCallError or null` The error from the tool call, if any. - `McpProtocolError object { code, message, type }` - `code: number` - `message: string` - `type: "mcp_protocol_error"` - `"mcp_protocol_error"` - `McpToolExecutionError object { content, type }` - `content: unknown` - `type: "mcp_tool_execution_error"` - `"mcp_tool_execution_error"` - `HTTPError object { code, message, type }` - `code: number` - `message: string` - `type: "http_error"` - `"http_error"` - `output: optional string or null` The output from the tool call. - `status: optional "in_progress" or "completed" or "incomplete" or 2 more` The status of the tool call. One of `in_progress`, `completed`, `incomplete`, `calling`, or `failed`. - `"in_progress"` - `"completed"` - `"incomplete"` - `"calling"` - `"failed"` - `CustomToolCallOutput object { call_id, output, type, 2 more }` The output of a custom tool call from your code, being sent back to the model. - `call_id: string` The call ID, used to map this custom tool call output to a custom tool call. - `output: string or array of ResponseInputText or ResponseInputImage or ResponseInputFile` The output from the custom tool call generated by your code. Can be a string or an list of output content. - `StringOutput = string` A string of the output of the custom tool call. - `OutputContentList = array of ResponseInputText or ResponseInputImage or ResponseInputFile` Text, image, or file output of the custom tool call. - `ResponseInputText object { text, type, prompt_cache_breakpoint }` A text input to the model. - `ResponseInputImage object { detail, type, file_id, 2 more }` An image input to the model. Learn about [image inputs](/docs/guides/vision). - `ResponseInputFile object { type, detail, file_data, 4 more }` A file input to the model. - `type: "custom_tool_call_output"` The type of the custom tool call output. Always `custom_tool_call_output`. - `"custom_tool_call_output"` - `id: optional string` The unique ID of the custom tool call output in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` The caller type. Always `direct`. - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` The caller type. Always `program`. - `"program"` - `CustomToolCall object { call_id, input, name, 4 more }` A call to a custom tool created by the model. - `call_id: string` An identifier used to map this custom tool call to a tool call output. - `input: string` The input for the custom tool call generated by the model. - `name: string` The name of the custom tool being called. - `type: "custom_tool_call"` The type of the custom tool call. Always `custom_tool_call`. - `"custom_tool_call"` - `id: optional string` The unique ID of the custom tool call in the OpenAI platform. - `caller: optional object { type } or object { caller_id, type } or null` The execution context that produced this tool call. - `Direct object { type }` - `type: "direct"` - `"direct"` - `Program object { caller_id, type }` - `caller_id: string` The call ID of the program item that produced this tool call. - `type: "program"` - `"program"` - `namespace: optional string` The namespace of the custom tool being called. - `CompactionTrigger object { type, id }` Compacts the current context. Must be the final input item. - `type: "compaction_trigger"` The type of the item. Always `compaction_trigger`. - `"compaction_trigger"` - `id: optional string or null` The unique ID of this compaction trigger. - `ItemReference object { id, type }` An internal identifier for an item to reference. - `id: string` The ID of the item to reference. - `type: optional "item_reference" or null` The type of item to reference. Always `item_reference`. - `"item_reference"` - `Program object { id, call_id, code, 2 more }` - `id: string` The unique ID of this program item. - `call_id: string` The stable call ID of the program item. - `code: string` The JavaScript source executed by programmatic tool calling. - `fingerprint: string` Opaque program replay fingerprint that must be round-tripped. - `type: "program"` The item type. Always `program`. - `"program"` - `ProgramOutput object { id, call_id, result, 2 more }` - `id: string` The unique ID of this program output item. - `call_id: string` The call ID of the program item. - `result: string` The result produced by the program item. - `status: "completed" or "incomplete"` The terminal status of the program output. - `"completed"` - `"incomplete"` - `type: "program_output"` The item type. Always `program_output`. - `"program_output"` - `instructions: optional string or null` A system (or developer) message inserted into the model's context. When used along with `previous_response_id`, the instructions from a previous response will not be carried over to the next response. This makes it simple to swap out system (or developer) messages in new responses. - `model: optional string or null` Model ID used to generate the response, like `gpt-4o` or `o3`. OpenAI offers a wide range of models with different capabilities, performance characteristics, and price points. Refer to the [model guide](/docs/models) to browse and compare available models. - `parallel_tool_calls: optional boolean or null` Whether to allow the model to run tool calls in parallel. - `personality: optional string or "friendly" or "pragmatic"` A model-owned style preset to apply to this request. Omit this parameter to use the model's default style. Supported values may expand over time. Values must be at most 64 characters. - `string` - `"friendly" or "pragmatic"` A model-owned style preset to apply to this request. Omit this parameter to use the model's default style. Supported values may expand over time. Values must be at most 64 characters. - `"friendly"` - `"pragmatic"` - `previous_response_id: optional string or null` The unique ID of the previous response to the model. Use this to create multi-turn conversations. Learn more about [conversation state](/docs/guides/conversation-state). Cannot be used in conjunction with `conversation`. - `reasoning: optional Reasoning or null` **gpt-5 and o-series models only** Configuration options for [reasoning models](https://platform.openai.com/docs/guides/reasoning). - `context: optional "auto" or "current_turn" or "all_turns" or null` Controls which reasoning items are rendered back to the model on later turns. If omitted or set to `auto`, the model determines the context mode. The `gpt-5.6` model family defaults to `all_turns`; earlier models default to `current_turn`. When returned on a response, this is the effective reasoning context mode used for the response. - `"auto"` - `"current_turn"` - `"all_turns"` - `effort: optional ReasoningEffort or null` Constrains effort on reasoning for reasoning models. Currently supported values are `none`, `minimal`, `low`, `medium`, `high`, `xhigh`, and `max`. Reducing reasoning effort can result in faster responses and fewer tokens used on reasoning in a response. Not all reasoning models support every value. See the [reasoning guide](https://platform.openai.com/docs/guides/reasoning) for model-specific support. - `"none"` - `"minimal"` - `"low"` - `"medium"` - `"high"` - `"xhigh"` - `"max"` - `generate_summary: optional "auto" or "concise" or "detailed" or null` **Deprecated:** use `summary` instead. A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. - `"auto"` - `"concise"` - `"detailed"` - `mode: optional string or "standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `string` - `"standard" or "pro"` Controls the reasoning execution mode for the request. When returned on a response, this is the effective execution mode. - `"standard"` - `"pro"` - `summary: optional "auto" or "concise" or "detailed" or null` A summary of the reasoning performed by the model. This can be useful for debugging and understanding the model's reasoning process. One of `auto`, `concise`, or `detailed`. `concise` is supported for `computer-use-preview` models and all reasoning models after `gpt-5`. - `"auto"` - `"concise"` - `"detailed"` - `text: optional object { format, verbosity } or null` Configuration options for a text response from the model. Can be plain text or structured JSON data. Learn more: - [Text inputs and outputs](/docs/guides/text) - [Structured Outputs](/docs/guides/structured-outputs) - `format: optional ResponseFormatTextConfig` An object specifying the format that the model must output. Configuring `{ "type": "json_schema" }` enables Structured Outputs, which ensures the model will match your supplied JSON schema. Learn more in the [Structured Outputs guide](/docs/guides/structured-outputs). The default format is `{ "type": "text" }` with no additional options. **Not recommended for gpt-4o and newer models:** Setting to `{ "type": "json_object" }` enables the older JSON mode, which ensures the message the model generates is valid JSON. Using `json_schema` is preferred for models that support it. - `ResponseFormatText object { type }` Default response format. Used to generate text responses. - `type: "text"` The type of response format being defined. Always `text`. - `"text"` - `ResponseFormatTextJSONSchemaConfig object { name, schema, type, 2 more }` JSON Schema response format. Used to generate structured JSON responses. Learn more about [Structured Outputs](/docs/guides/structured-outputs). - `name: string` The name of the response format. Must be a-z, A-Z, 0-9, or contain underscores and dashes, with a maximum length of 64. - `schema: map[unknown]` The schema for the response format, described as a JSON Schema object. Learn how to build JSON schemas [here](https://json-schema.org/). - `type: "json_schema"` The type of response format being defined. Always `json_schema`. - `"json_schema"` - `description: optional string` A description of what the response format is for, used by the model to determine how to respond in the format. - `strict: optional boolean or null` Whether to enable strict schema adherence when generating the output. If set to true, the model will always follow the exact schema defined in the `schema` field. Only a subset of JSON Schema is supported when `strict` is `true`. To learn more, read the [Structured Outputs guide](/docs/guides/structured-outputs). - `ResponseFormatJSONObject object { type }` JSON object response format. An older method of generating JSON responses. Using `json_schema` is recommended for models that support it. Note that the model will not generate JSON without a system or user message instructing it to do so. - `type: "json_object"` The type of response format being defined. Always `json_object`. - `"json_object"` - `verbosity: optional "low" or "medium" or "high" or null` Constrains the verbosity of the model's response. Lower values will result in more concise responses, while higher values will result in more verbose responses. Currently supported values are `low`, `medium`, and `high`. The default is `medium`. - `"low"` - `"medium"` - `"high"` - `tool_choice: optional ToolChoiceOptions or ToolChoiceAllowed or ToolChoiceTypes or 6 more or null` Controls which tool the model should use, if any. - `ToolChoiceOptions = "none" or "auto" or "required"` Controls which (if any) tool is called by the model. `none` means the model will not call any tool and instead generates a message. `auto` means the model can pick between generating a message or calling one or more tools. `required` means the model must call one or more tools. - `"none"` - `"auto"` - `"required"` - `ToolChoiceAllowed object { mode, tools, type }` Constrains the tools available to the model to a pre-defined set. - `mode: "auto" or "required"` Constrains the tools available to the model to a pre-defined set. `auto` allows the model to pick from among the allowed tools and generate a message. `required` requires the model to call one or more of the allowed tools. - `"auto"` - `"required"` - `tools: array of map[unknown]` A list of tool definitions that the model should be allowed to call. For the Responses API, the list of tool definitions might look like: ```json [ { "type": "function", "name": "get_weather" }, { "type": "mcp", "server_label": "deepwiki" }, { "type": "image_generation" } ] ``` - `type: "allowed_tools"` Allowed tool configuration type. Always `allowed_tools`. - `"allowed_tools"` - `ToolChoiceTypes object { type }` Indicates that the model should use a built-in tool to generate a response. [Learn more about built-in tools](/docs/guides/tools). - `type: "file_search" or "web_search_preview" or "computer" or 5 more` The type of hosted tool the model should to use. Learn more about [built-in tools](/docs/guides/tools). Allowed values are: - `file_search` - `web_search_preview` - `computer` - `computer_use_preview` - `computer_use` - `code_interpreter` - `image_generation` - `"file_search"` - `"web_search_preview"` - `"computer"` - `"computer_use_preview"` - `"computer_use"` - `"web_search_preview_2025_03_11"` - `"image_generation"` - `"code_interpreter"` - `ToolChoiceFunction object { name, type }` Use this option to force the model to call a specific function. - `name: string` The name of the function to call. - `type: "function"` For function calling, the type is always `function`. - `"function"` - `ToolChoiceMcp object { server_label, type, name }` Use this option to force the model to call a specific tool on a remote MCP server. - `server_label: string` The label of the MCP server to use. - `type: "mcp"` For MCP tools, the type is always `mcp`. - `"mcp"` - `name: optional string or null` The name of the tool to call on the server. - `ToolChoiceCustom object { name, type }` Use this option to force the model to call a specific custom tool. - `name: string` The name of the custom tool to call. - `type: "custom"` For custom tool calling, the type is always `custom`. - `"custom"` - `SpecificProgrammaticToolCallingParam object { type }` - `type: "programmatic_tool_calling"` The tool to call. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ToolChoiceApplyPatch object { type }` Forces the model to call the apply_patch tool when executing a tool call. - `type: "apply_patch"` The tool to call. Always `apply_patch`. - `"apply_patch"` - `ToolChoiceShell object { type }` Forces the model to call the shell tool when a tool call is required. - `type: "shell"` The tool to call. Always `shell`. - `"shell"` - `tools: optional array of object { name, parameters, strict, 5 more } or object { type, vector_store_ids, filters, 2 more } or object { type } or 13 more or null` An array of tools the model may call while generating a response. You can specify which tool to use by setting the `tool_choice` parameter. - `Function object { name, parameters, strict, 5 more }` Defines a function in your own code the model can choose to call. Learn more about [function calling](https://platform.openai.com/docs/guides/function-calling). - `name: string` The name of the function to call. - `parameters: map[unknown] or null` A JSON schema object describing the parameters of the function. - `strict: boolean or null` Whether strict parameter validation is enforced for this function tool. - `type: "function"` The type of the function tool. Always `function`. - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function is deferred and loaded via tool search. - `description: optional string or null` A description of the function. Used by the model to determine whether or not to call the function. - `output_schema: optional map[unknown] or null` A JSON schema object describing the JSON value encoded in string outputs for this function. - `FileSearch object { type, vector_store_ids, filters, 2 more }` A tool that searches for relevant content from uploaded files. Learn more about the [file search tool](https://platform.openai.com/docs/guides/tools-file-search). - `type: "file_search"` The type of the file search tool. Always `file_search`. - `"file_search"` - `vector_store_ids: array of string` The IDs of the vector stores to search. - `filters: optional ComparisonFilter or CompoundFilter or null` A filter to apply. - `ComparisonFilter object { key, type, value }` A filter used to compare a specified attribute key to a given value using a defined comparison operation. - `CompoundFilter object { filters, type }` Combine multiple filters using `and` or `or`. - `max_num_results: optional number` The maximum number of results to return. This number should be between 1 and 50 inclusive. - `ranking_options: optional object { hybrid_search, ranker, score_threshold }` Ranking options for search. - `hybrid_search: optional object { embedding_weight, text_weight }` Weights that control how reciprocal rank fusion balances semantic embedding matches versus sparse keyword matches when hybrid search is enabled. - `embedding_weight: number` The weight of the embedding in the reciprocal ranking fusion. - `text_weight: number` The weight of the text in the reciprocal ranking fusion. - `ranker: optional "auto" or "default-2024-11-15"` The ranker to use for the file search. - `"auto"` - `"default-2024-11-15"` - `score_threshold: optional number` The score threshold for the file search, a number between 0 and 1. Numbers closer to 1 will attempt to return only the most relevant results, but may return fewer results. - `Computer object { type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `type: "computer"` The type of the computer tool. Always `computer`. - `"computer"` - `ComputerUsePreview object { display_height, display_width, environment, type }` A tool that controls a virtual computer. Learn more about the [computer tool](https://platform.openai.com/docs/guides/tools-computer-use). - `display_height: number` The height of the computer display. - `display_width: number` The width of the computer display. - `environment: "windows" or "mac" or "linux" or 2 more` The type of computer environment to control. - `"windows"` - `"mac"` - `"linux"` - `"ubuntu"` - `"browser"` - `type: "computer_use_preview"` The type of the computer use tool. Always `computer_use_preview`. - `"computer_use_preview"` - `WebSearch object { type, external_web_access, filters, 2 more }` Search the Internet for sources related to the prompt. Learn more about the [web search tool](/docs/guides/tools-web-search). - `type: "web_search" or "web_search_2025_08_26"` The type of the web search tool. One of `web_search` or `web_search_2025_08_26`. - `"web_search"` - `"web_search_2025_08_26"` - `external_web_access: optional boolean` Allow live internet access for web search. Defaults to true when omitted. When false, the web search tool runs in offline/cache-only mode and will not fetch new external content. - `filters: optional object { allowed_domains } or null` Filters for the search. - `allowed_domains: optional array of string or null` Allowed domains for the search. If not provided, all domains are allowed. Subdomains of the provided domains are allowed as well. Example: `["pubmed.ncbi.nlm.nih.gov"]` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { city, country, region, 2 more } or null` The approximate location of the user. - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `type: optional "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `Mcp object { server_label, type, allowed_callers, 9 more }` Give the model access to additional tools via remote Model Context Protocol (MCP) servers. [Learn more about MCP](/docs/guides/tools-remote-mcp). - `server_label: string` A label for this MCP server, used to identify it in tool calls. - `type: "mcp"` The type of the MCP tool. Always `mcp`. - `"mcp"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `allowed_tools: optional array of string or object { read_only, tool_names } or null` List of allowed tool names or a filter object. - `McpAllowedTools = array of string` A string array of allowed tool names - `McpToolFilter object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `authorization: optional string` An OAuth access token that can be used with a remote MCP server, either with a custom MCP server URL or a service connector. Your application must handle the OAuth authorization flow and provide the token here. - `connector_id: optional "connector_dropbox" or "connector_gmail" or "connector_googlecalendar" or 5 more` Identifier for service connectors, like those available in ChatGPT. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. Learn more about service connectors [here](/docs/guides/tools-remote-mcp#connectors). Currently supported `connector_id` values are: - Dropbox: `connector_dropbox` - Gmail: `connector_gmail` - Google Calendar: `connector_googlecalendar` - Google Drive: `connector_googledrive` - Microsoft Teams: `connector_microsoftteams` - Outlook Calendar: `connector_outlookcalendar` - Outlook Email: `connector_outlookemail` - SharePoint: `connector_sharepoint` - `"connector_dropbox"` - `"connector_gmail"` - `"connector_googlecalendar"` - `"connector_googledrive"` - `"connector_microsoftteams"` - `"connector_outlookcalendar"` - `"connector_outlookemail"` - `"connector_sharepoint"` - `defer_loading: optional boolean` Whether this MCP tool is deferred and discovered via tool search. - `headers: optional map[string] or null` Optional HTTP headers to send to the MCP server. Use for authentication or other purposes. - `require_approval: optional object { always, never } or "always" or "never" or null` Specify which of the MCP server's tools require approval. - `McpToolApprovalFilter object { always, never }` Specify which of the MCP server's tools require approval. Can be `always`, `never`, or a filter object associated with tools that require approval. - `always: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `never: optional object { read_only, tool_names }` A filter object to specify which tools are allowed. - `read_only: optional boolean` Indicates whether or not a tool modifies data or is read-only. If an MCP server is [annotated with `readOnlyHint`](https://modelcontextprotocol.io/specification/2025-06-18/schema#toolannotations-readonlyhint), it will match this filter. - `tool_names: optional array of string` List of allowed tool names. - `McpToolApprovalSetting = "always" or "never"` Specify a single approval policy for all tools. One of `always` or `never`. When set to `always`, all tools will require approval. When set to `never`, all tools will not require approval. - `"always"` - `"never"` - `server_description: optional string` Optional description of the MCP server, used to provide more context. - `server_url: optional string` The URL for the MCP server. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `tunnel_id: optional string` The Secure MCP Tunnel ID to use instead of a direct server URL. One of `server_url`, `connector_id`, or `tunnel_id` must be provided. - `CodeInterpreter object { container, type, allowed_callers }` A tool that runs Python code to help generate a response to a prompt. - `container: string or object { type, file_ids, memory_limit, network_policy }` The code interpreter container. Can be a container ID or an object that specifies uploaded file IDs to make available to your code, along with an optional `memory_limit` setting. - `string` The container ID. - `CodeInterpreterToolAuto object { type, file_ids, memory_limit, network_policy }` Configuration for a code interpreter container. Optionally specify the IDs of the files to run the code on. - `type: "auto"` Always `auto`. - `"auto"` - `file_ids: optional array of string` An optional list of uploaded files to make available to your code. - `memory_limit: optional "1g" or "4g" or "16g" or "64g" or null` The memory limit for the code interpreter container. - `"1g"` - `"4g"` - `"16g"` - `"64g"` - `network_policy: optional ContainerNetworkPolicyDisabled or ContainerNetworkPolicyAllowlist` Network access policy for the container. - `ContainerNetworkPolicyDisabled object { type }` - `ContainerNetworkPolicyAllowlist object { allowed_domains, type, domain_secrets }` - `type: "code_interpreter"` The type of the code interpreter tool. Always `code_interpreter`. - `"code_interpreter"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `ProgrammaticToolCalling object { type }` - `type: "programmatic_tool_calling"` The type of the tool. Always `programmatic_tool_calling`. - `"programmatic_tool_calling"` - `ImageGeneration object { type, action, background, 9 more }` A tool that generates images using the GPT image models. - `type: "image_generation"` The type of the image generation tool. Always `image_generation`. - `"image_generation"` - `action: optional "generate" or "edit" or "auto"` Whether to generate a new image or edit an existing image. Default: `auto`. - `"generate"` - `"edit"` - `"auto"` - `background: optional "transparent" or "opaque" or "auto"` Set the background of the generated image. One of `transparent`, `opaque`, or `auto`. Transparent backgrounds are available for supported GPT Image models. For `gpt-image-2` and `gpt-image-2-2026-04-21`, this support is in preview. When using `transparent`, set the output format to `png` or `webp`. Default: `auto`. - `"transparent"` - `"opaque"` - `"auto"` - `input_fidelity: optional "high" or "low" or null` Control how much effort the model will exert to match the style and features, especially facial features, of input images. This parameter is only supported for `gpt-image-1` and `gpt-image-1.5` and later models, unsupported for `gpt-image-1-mini`. Supports `high` and `low`. Defaults to `low`. - `"high"` - `"low"` - `input_image_mask: optional object { file_id, image_url }` Optional mask for inpainting. Contains `image_url` (string, optional) and `file_id` (string, optional). - `file_id: optional string` File ID for the mask image. - `image_url: optional string` Base64-encoded mask image. - `model: optional string or "gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `string` - `"gpt-image-1" or "gpt-image-1-mini" or "gpt-image-1.5" or 2 more` The image generation model to use. One of `gpt-image-1`, `gpt-image-1-mini`, `gpt-image-1.5`, `gpt-image-2`, `gpt-image-2-2026-04-21`, or `chatgpt-image-latest`. Default: `gpt-image-1`. - `"gpt-image-1"` - `"gpt-image-1-mini"` - `"gpt-image-1.5"` - `"gpt-image-2"` - `"gpt-image-2-2026-04-21"` - `moderation: optional "auto" or "low"` Moderation level for the generated image. Default: `auto`. - `"auto"` - `"low"` - `output_compression: optional number` Compression level for the output image. Default: 100. - `output_format: optional "png" or "webp" or "jpeg"` The output format of the generated image. One of `png`, `webp`, or `jpeg`. Default: `png`. - `"png"` - `"webp"` - `"jpeg"` - `partial_images: optional number` Number of partial images to generate in streaming mode, from 0 (default value) to 3. - `quality: optional "low" or "medium" or "high" or "auto"` The quality of the generated image. One of `low`, `medium`, `high`, or `auto`. Default: `auto`. - `"low"` - `"medium"` - `"high"` - `"auto"` - `size: optional string or "1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `string` - `"1024x1024" or "1024x1536" or "1536x1024" or "auto"` The size of the generated images. For `gpt-image-2` and `gpt-image-2-2026-04-21`, arbitrary resolutions are supported as `WIDTHxHEIGHT` strings, for example `1536x864`. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above `2560x1440` are experimental, and the maximum supported resolution is `3840x2160`. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes `1024x1024`, `1536x1024`, and `1024x1536` are supported by the GPT image models; `auto` is supported for models that allow automatic sizing. For `dall-e-2`, use one of `256x256`, `512x512`, or `1024x1024`. For `dall-e-3`, use one of `1024x1024`, `1792x1024`, or `1024x1792`. - `"1024x1024"` - `"1024x1536"` - `"1536x1024"` - `"auto"` - `LocalShell object { type }` A tool that allows the model to execute shell commands in a local environment. - `type: "local_shell"` The type of the local shell tool. Always `local_shell`. - `"local_shell"` - `Shell object { type, allowed_callers, environment }` A tool that allows the model to execute shell commands. - `type: "shell"` The type of the shell tool. Always `shell`. - `"shell"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `environment: optional ContainerAuto or LocalEnvironment or ContainerReference or null` - `ContainerAuto object { type, file_ids, memory_limit, 2 more }` - `LocalEnvironment object { type, skills }` - `ContainerReference object { container_id, type }` - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `Namespace object { description, name, tools, type }` Groups function/custom tools under a shared namespace. - `description: string` A description of the namespace shown to the model. - `name: string` The namespace name used in tool calls (for example, `crm`). - `tools: array of object { name, type, allowed_callers, 5 more } or object { name, type, allowed_callers, 3 more }` The function/custom tools available inside this namespace. - `Function object { name, type, allowed_callers, 5 more }` - `name: string` - `type: "function"` - `"function"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this function should be deferred and discovered via tool search. - `description: optional string or null` - `output_schema: optional map[unknown] or null` A JSON Schema describing the JSON value encoded in string outputs for this function tool. This does not describe content-array outputs. - `parameters: optional unknown or null` - `strict: optional boolean or null` Whether to enforce strict parameter validation. If omitted, Responses attempts to use strict validation when the schema is compatible, and falls back to non-strict validation otherwise. - `Custom object { name, type, allowed_callers, 3 more }` A custom tool that processes input using a specified format. Learn more about [custom tools](/docs/guides/function-calling#custom-tools) - `name: string` The name of the custom tool, used to identify it in tool calls. - `type: "custom"` The type of the custom tool. Always `custom`. - `"custom"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `defer_loading: optional boolean` Whether this tool should be deferred and discovered via tool search. - `description: optional string` Optional description of the custom tool, used to provide more context. - `format: optional CustomToolInputFormat` The input format for the custom tool. Default is unconstrained text. - `type: "namespace"` The type of the tool. Always `namespace`. - `"namespace"` - `ToolSearch object { type, description, execution, parameters }` Hosted or BYOT tool search configuration for deferred tools. - `type: "tool_search"` The type of the tool. Always `tool_search`. - `"tool_search"` - `description: optional string or null` Description shown to the model for a client-executed tool search tool. - `execution: optional "server" or "client"` Whether tool search is executed by the server or by the client. - `"server"` - `"client"` - `parameters: optional unknown or null` Parameter schema for a client-executed tool search tool. - `WebSearchPreview object { type, search_content_types, search_context_size, user_location }` This tool searches the web for relevant results to use in a response. Learn more about the [web search tool](https://platform.openai.com/docs/guides/tools-web-search). - `type: "web_search_preview" or "web_search_preview_2025_03_11"` The type of the web search tool. One of `web_search_preview` or `web_search_preview_2025_03_11`. - `"web_search_preview"` - `"web_search_preview_2025_03_11"` - `search_content_types: optional array of "text" or "image"` - `"text"` - `"image"` - `search_context_size: optional "low" or "medium" or "high"` High level guidance for the amount of context window space to use for the search. One of `low`, `medium`, or `high`. `medium` is the default. - `"low"` - `"medium"` - `"high"` - `user_location: optional object { type, city, country, 2 more } or null` The user's location. - `type: "approximate"` The type of location approximation. Always `approximate`. - `"approximate"` - `city: optional string or null` Free text input for the city of the user, e.g. `San Francisco`. - `country: optional string or null` The two-letter [ISO country code](https://en.wikipedia.org/wiki/ISO_3166-1) of the user, e.g. `US`. - `region: optional string or null` Free text input for the region of the user, e.g. `California`. - `timezone: optional string or null` The [IANA timezone](https://timeapi.io/documentation/iana-timezones) of the user, e.g. `America/Los_Angeles`. - `ApplyPatch object { type, allowed_callers }` Allows the assistant to create, delete, or update files using unified diffs. - `type: "apply_patch"` The type of the tool. Always `apply_patch`. - `"apply_patch"` - `allowed_callers: optional array of "direct" or "programmatic" or null` The tool invocation context(s). - `"direct"` - `"programmatic"` - `truncation: optional "auto" or "disabled"` The truncation strategy to use for the model response. - `auto`: If the input to this Response exceeds the model's context window size, the model will truncate the response to fit the context window by dropping items from the beginning of the conversation. - `disabled` (default): If the input size will exceed the context window size for a model, the request will fail with a 400 error. - `"auto"` - `"disabled"` ### Returns - `input_tokens: number` - `object: "response.input_tokens"` - `"response.input_tokens"` ### Example ```http curl https://api.openai.com/v1/responses/input_tokens \ -X POST \ -H "Authorization: Bearer $OPENAI_API_KEY" ``` #### Response ```json { "input_tokens": 123, "object": "response.input_tokens" } ``` ### Example ```http curl -X POST https://api.openai.com/v1/responses/input_tokens \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -d '{ "model": "gpt-5", "input": "Tell me a joke." }' ``` #### Response ```json { "object": "response.input_tokens", "input_tokens": 11 } ``` ## Domain Types ### Input Token Count Response - `InputTokenCountResponse object { input_tokens, object }` - `input_tokens: number` - `object: "response.input_tokens"` - `"response.input_tokens"`