curl -X POST 'https://api.openai.com/v1/fine_tuning/checkpoints/ft%3Agpt-4o-mini-2024-07-18%3Aorg%3Aweather%3AB7R9VjQd/permissions' \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "project_ids": [
    "example-project-ids"
  ]
}'

# POST /fine_tuning/checkpoints/{fine_tuned_model_checkpoint}/permissions (OpenAI API)
Base URL: https://api.openai.com/v1
Auth: Authorization; OpenAI API key; required.
Request formats: application/json.
Last verified: 2026-10-20

> Create checkpoint permissions

## Critical Gotchas
* The Responses API is the primary interface for new text and tool workflows; Chat Completions remains a separate compatibility API.
* Audio transcription uploads use multipart form data rather than a JSON request body.

## cURL
curl -X POST 'https://api.openai.com/v1/fine_tuning/checkpoints/ft%3Agpt-4o-mini-2024-07-18%3Aorg%3Aweather%3AB7R9VjQd/permissions' \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "project_ids": [
    "example-project-ids"
  ]
}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| fine_tuned_model_checkpoint | path | string | Yes | The ID of the fine-tuned model checkpoint to create a permission for.  |
| project_ids | body | string[] | Yes | The project identifiers to grant access to. |

## Response example
{"data":[{}],"object":"list"}

---
Need an API key? Get one at https://platform.openai.com/api-keys

POST

POST /fine_tuning/checkpoints/{fine_tuned_model_checkpoint}/permissions — OpenAI API

OpenAI API key (required); https://api.openai.com/v1

OpenAI API

Create checkpoint permissions

Base URL: https://api.openai.com/v1
Auth: Authorization: Bearer <OPENAI_API_KEY>
Last verified: 2026-10-20 · upstream hash matched

Actions Try in browser→

Agents: curl -H "Accept: text/markdown" this URL
→ 210 tokens · Vary: Accept

Critical gotchas

The Responses API is the primary interface for new text and tool workflows; Chat Completions remains a separate compatibility API.

Audio transcription uploads use multipart form data rather than a JSON request body.

cURL

curl -X POST 'https://api.openai.com/v1/fine_tuning/checkpoints/ft%3Agpt-4o-mini-2024-07-18%3Aorg%3Aweather%3AB7R9VjQd/permissions' \  -H "Authorization: Bearer $OPENAI_API_KEY" \  -H 'Content-Type: application/json' \  -d '{  "project_ids": [    "example-project-ids"  ]}'

Parameters

Name	In	Type	Required	Description
fine_tuned_model_checkpoint	path	string	Yes	The ID of the fine-tuned model checkpoint to create a permission for.
project_ids	body	string[]	Yes	The project identifiers to grant access to.

Response 200 OK

{
  "data": [
    {
      "id": "string",
      "created_at": 0,
      "project_id": "string",
      "object": "checkpoint.permission"
    }
  ],
  "object": "list",
  "first_id": "string",
  "last_id": "string",
  "has_more": true
}

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