プログラムによるツール呼び出し

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112import OpenAI from "openai";
import { toResponseInputItems } from "openai/lib/responses/ResponseInputItems";

const client = new OpenAI();

const implementations = {
  get_inventory: async ({ sku }) => ({ sku, available_units: 42 }),
  get_demand: async ({ sku }) => ({ sku, requested_units: 31 }),
};

const tools = [
  {
    type: "function",
    name: "get_inventory",
    description:
      "Return an object with sku (string) and available_units (number).",
    parameters: {
      type: "object",
      properties: { sku: { type: "string" } },
      required: ["sku"],
      additionalProperties: false,
    },
    output_schema: {
      type: "object",
      properties: {
        sku: { type: "string" },
        available_units: { type: "number" },
      },
      required: ["sku", "available_units"],
      additionalProperties: false,
    },
    allowed_callers: ["programmatic"],
    strict: true,
  },
  {
    type: "function",
    name: "get_demand",
    description:
      "Return an object with sku (string) and requested_units (number).",
    parameters: {
      type: "object",
      properties: { sku: { type: "string" } },
      required: ["sku"],
      additionalProperties: false,
    },
    output_schema: {
      type: "object",
      properties: {
        sku: { type: "string" },
        requested_units: { type: "number" },
      },
      required: ["sku", "requested_units"],
      additionalProperties: false,
    },
    allowed_callers: ["programmatic"],
    strict: true,
  },
  { type: "programmatic_tool_calling" },
];

const input = [
  {
    role: "user",
    content: "Compare inventory with demand for sku_123.",
  },
];

while (true) {
  const response = await client.responses.create({
    model: "YOUR_MODEL_ID",
    store: false,
    input,
    tools,
  });

  if (response.status !== "completed") {
    throw new Error(`Response ended with status ${response.status}`);
  }

  // Preserve replayable output, including program and reasoning items.
  input.push(...toResponseInputItems(response.output));

  const calls = response.output.filter((item) => item.type === "function_call");

  if (calls.length === 0) {
    const message = response.output.find((item) => item.type === "message");
    if (message) {
      const refusal = message.content.find((part) => part.type === "refusal");
      console.log(response.output_text || refusal?.refusal || "");
      break;
    }
    continue;
  }

  const outputs = await Promise.all(
    calls.map(async (call) => {
      const run = implementations[call.name];
      if (!run) throw new Error(`Unknown tool: ${call.name}`);

      const result = await run(JSON.parse(call.arguments));
      return {
        type: "function_call_output",
        call_id: call.call_id,
        output: JSON.stringify(result),
        // Preserve caller so the runtime can resume the correct program.
        caller: call.caller,
      };
    })
  );

  input.push(...outputs);
}

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179package main

import (
	"context"
	"encoding/json"
	"fmt"

	"github.com/openai/openai-go/v3"
	"github.com/openai/openai-go/v3/responses"
)

type toolArguments struct {
	SKU string `json:"sku"`
}

func main() {
	client := openai.NewClient()
	input := responses.ResponseInputParam{
		responses.ResponseInputItemParamOfMessage(
			"Compare inventory with demand for sku_123.",
			responses.EasyInputMessageRoleUser,
		),
	}
	tools := []responses.ToolUnionParam{
		functionTool(
			"get_inventory",
			"Return an object with sku (string) and available_units (number).",
			"available_units",
		),
		functionTool(
			"get_demand",
			"Return an object with sku (string) and requested_units (number).",
			"requested_units",
		),
		programmaticTool(),
	}

	for {
		response, err := client.Responses.New(context.Background(), responses.ResponseNewParams{
			Model: "gpt-6-astra",
			Store: openai.Bool(false),
			Input: responses.ResponseNewParamsInputUnion{OfInputItemList: input},
			Tools: tools,
		})
		if err != nil {
			panic(err)
		}
		if response.Status != "completed" {
			panic(fmt.Errorf("response ended with status %s", response.Status))
		}

		// Preserve every output item, including program and reasoning items.
		input = append(input, outputAsInput(response.Output)...)

		calls := functionCalls(response.Output)
		if len(calls) == 0 {
			if text, ok := finalMessageText(response); ok {
				fmt.Println(text)
				break
			}
			continue
		}

		for _, call := range calls {
			result, err := runTool(call.Name, call.Arguments)
			if err != nil {
				panic(err)
			}
			output, err := json.Marshal(result)
			if err != nil {
				panic(err)
			}

			toolOutput := responses.ResponseInputItemParamOfFunctionCallOutput(string(output))
			toolOutput.OfFunctionCallOutput.CallID = openai.String(call.CallID)
			caller := call.Caller.AsProgram()
			if caller.CallerID == "" {
				panic("function call is missing its program caller")
			}
			// Preserve caller so the runtime can resume the correct program.
			toolOutput.OfFunctionCallOutput.Caller.OfProgram =
				&responses.ResponseInputItemFunctionCallOutputCallerProgramParam{
					CallerID: caller.CallerID,
				}
			input = append(input, toolOutput)
		}
	}
}

func functionTool(name, description, resultField string) responses.ToolUnionParam {
	parameters := map[string]any{
		"type": "object",
		"properties": map[string]any{
			"sku": map[string]any{"type": "string"},
		},
		"required":             []string{"sku"},
		"additionalProperties": false,
	}
	outputSchema := map[string]any{
		"type": "object",
		"properties": map[string]any{
			"sku":       map[string]any{"type": "string"},
			resultField: map[string]any{"type": "number"},
		},
		"required":             []string{"sku", resultField},
		"additionalProperties": false,
	}
	tool := responses.ToolParamOfFunction(name, parameters, true)
	tool.OfFunction.Description = openai.String(description)
	tool.OfFunction.AllowedCallers = []string{"programmatic"}
	tool.OfFunction.OutputSchema = outputSchema
	return tool
}

func programmaticTool() responses.ToolUnionParam {
	tool := responses.NewToolProgrammaticToolCallingParam()
	return responses.ToolUnionParam{OfProgrammaticToolCalling: &tool}
}

func outputAsInput(
	output []responses.ResponseOutputItemUnion,
) []responses.ResponseInputItemUnionParam {
	input := make([]responses.ResponseInputItemUnionParam, 0, len(output))
	for _, item := range output {
		var converted responses.ResponseInputItemUnion
		if err := json.Unmarshal([]byte(item.RawJSON()), &converted); err != nil {
			panic(err)
		}
		input = append(input, converted.ToParam())
	}
	return input
}

func functionCalls(
	output []responses.ResponseOutputItemUnion,
) []responses.ResponseFunctionToolCall {
	calls := make([]responses.ResponseFunctionToolCall, 0)
	for _, item := range output {
		if item.Type == "function_call" {
			calls = append(calls, item.AsFunctionCall())
		}
	}
	return calls
}

func finalMessageText(response *responses.Response) (string, bool) {
	for _, item := range response.Output {
		if item.Type != "message" {
			continue
		}
		text := response.OutputText()
		if text != "" {
			return text, true
		}
		for _, content := range item.AsMessage().Content {
			if content.Type == "refusal" {
				return content.AsRefusal().Refusal, true
			}
		}
		return "", true
	}
	return "", false
}

func runTool(name, argumentsJSON string) (map[string]any, error) {
	var arguments toolArguments
	if err := json.Unmarshal([]byte(argumentsJSON), &arguments); err != nil {
		return nil, fmt.Errorf("parse %s arguments: %w", name, err)
	}

	switch name {
	case "get_inventory":
		return map[string]any{"sku": arguments.SKU, "available_units": 42}, nil
	case "get_demand":
		return map[string]any{"sku": arguments.SKU, "requested_units": 31}, nil
	default:
		return nil, fmt.Errorf("unknown tool: %s", name)
	}
}

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125require "json"
require "openai"

client = OpenAI::Client.new

def get_inventory(sku:)
  {
    sku: sku,
    available_units: 42
  }
end

def get_demand(sku:)
  {
    sku: sku,
    requested_units: 31
  }
end

implementations = {
  "get_inventory" => method(:get_inventory),
  "get_demand" => method(:get_demand)
}
tools = [
  {
    type: :function,
    name: "get_inventory",
    description: "Return an object with sku (string) and available_units (number).",
    parameters: {
      type: :object,
      properties: { sku: { type: :string } },
      required: ["sku"],
      additionalProperties: false
    },
    output_schema: {
      type: :object,
      properties: {
        sku: { type: :string },
        available_units: { type: :number }
      },
      required: %w[sku available_units],
      additionalProperties: false
    },
    allowed_callers: [:programmatic],
    strict: true
  },
  {
    type: :function,
    name: "get_demand",
    description: "Return an object with sku (string) and requested_units (number).",
    parameters: {
      type: :object,
      properties: { sku: { type: :string } },
      required: ["sku"],
      additionalProperties: false
    },
    output_schema: {
      type: :object,
      properties: {
        sku: { type: :string },
        requested_units: { type: :number }
      },
      required: %w[sku requested_units],
      additionalProperties: false
    },
    allowed_callers: [:programmatic],
    strict: true
  },
  { type: :programmatic_tool_calling }
]
input = [
  {
    role: :user,
    content: "Compare inventory with demand for sku_123."
  }
]

loop do
  response = client.responses.create(
    model: "gpt-6-astra",
    store: false,
    input: input,
    tools: tools
  )
  unless response.status == OpenAI::Responses::ResponseStatus::COMPLETED
    raise "Response ended with status #{response.status}"
  end

  # Preserve every output item, including program and reasoning items.
  input.concat(response.output)
  calls = response.output.grep(OpenAI::Models::Responses::ResponseFunctionToolCall)

  if calls.empty?
    message = response.output.find do |item|
      item.is_a?(OpenAI::Models::Responses::ResponseOutputMessage)
    end
    next unless message.is_a?(OpenAI::Models::Responses::ResponseOutputMessage)

    refusal = message.content.find do |content|
      content.is_a?(OpenAI::Models::Responses::ResponseOutputRefusal)
    end
    text = response.output_text
    if text.empty? &&
       refusal.is_a?(OpenAI::Models::Responses::ResponseOutputRefusal)
      text = refusal.refusal
    end
    puts(text)
    break
  end

  calls.each do |call|
    implementation = implementations.fetch(call.name) do
      raise ArgumentError, "Unknown tool: #{call.name}"
    end
    result = implementation.call(**JSON.parse(call.arguments, symbolize_names: true))
    output = {
      type: :function_call_output,
      call_id: call.call_id,
      output: JSON.generate(result)
    }
    # Preserve caller so the runtime can resume the correct program.
    output[:caller] = call.caller_.to_h if call.caller_
    input << output
  end
end