API Reference

Containers

Files

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Create container file

POST/containers/{container_id}/files

Create a Container File

You can send either a multipart/form-data request with the raw file content, or a JSON request with a file ID.

Path ParametersExpand Collapse

container_id: string

Body ParametersJSONExpand Collapse

file: optional file

The File object (not file name) to be uploaded.

file_id: optional string

Name of the file to create.

ReturnsExpand Collapse

id: string

Unique identifier for the file.

bytes: number

Size of the file in bytes.

container_id: string

The container this file belongs to.

created_at: number

Unix timestamp (in seconds) when the file was created.

object: string

The type of this object (container.file).

path: string

Path of the file in the container.

source: string

Source of the file (e.g., user, assistant).

Create container file

HTTP

HTTP

TypeScript

Python

Java

Go

Ruby

curl https://api.openai.com/v1/containers/cntr_682e0e7318108198aa783fd921ff305e08e78805b9fdbb04/files \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -F file="@example.txt"

{
  "id": "cfile_682e0e8a43c88191a7978f477a09bdf5",
  "object": "container.file",
  "created_at": 1747848842,
  "bytes": 880,
  "container_id": "cntr_682e0e7318108198aa783fd921ff305e08e78805b9fdbb04",
  "path": "/mnt/data/88e12fa445d32636f190a0b33daed6cb-tsconfig.json",
  "source": "user"
}

Returns Examples

{
  "id": "cfile_682e0e8a43c88191a7978f477a09bdf5",
  "object": "container.file",
  "created_at": 1747848842,
  "bytes": 880,
  "container_id": "cntr_682e0e7318108198aa783fd921ff305e08e78805b9fdbb04",
  "path": "/mnt/data/88e12fa445d32636f190a0b33daed6cb-tsconfig.json",
  "source": "user"
}