curl -X POST 'https://api.github.com/users/example-username/projectsV2/10/fields' \
  -H "Authorization: Bearer $GITHUB_TOKEN" \
  -H 'Accept: application/vnd.github+json' \
  -H 'X-GitHub-Api-Version: 2026-03-10' \
  -H 'Content-Type: application/json' \
  -d '{
  "name": "example-name",
  "data_type": "text"
}'

# POST /users/{username}/projectsV2/{project_number}/fields (GitHub API)
Base URL: https://api.github.com
Auth: Authorization; GitHub token; required.
Request formats: application/json.
Last verified: 2026-10-20

> Add field to user owned project

## Critical Gotchas
* GitHub recommends an `Accept: application/vnd.github+json` header and an explicit `X-GitHub-Api-Version` header.
* Fine-grained tokens only authorize repositories and permissions selected when the token is created.

## cURL
curl -X POST 'https://api.github.com/users/example-username/projectsV2/10/fields' \
  -H "Authorization: Bearer $GITHUB_TOKEN" \
  -H 'Accept: application/vnd.github+json' \
  -H 'X-GitHub-Api-Version: 2026-03-10' \
  -H 'Content-Type: application/json' \
  -d '{
  "name": "example-name",
  "data_type": "text"
}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| username | path | string | Yes | The handle for the GitHub user account. |
| project_number | path | integer | Yes | The project's number. |
| name | body | string | Yes | The name of the field. |
| data_type | body | string | Yes | The field's data type. |

## Response example
{"id":0,"issue_field_id":0}

---
Need an API key? Get one at https://github.com/settings/tokens

POST

POST /users/{username}/projectsV2/{project_number}/fields — GitHub API

GitHub token (required); https://api.github.com

GitHub API

Add field to user owned project

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

Actions Try in browser→

Agents: curl -H "Accept: text/markdown" this URL
→ 237 tokens · Vary: Accept

Critical gotchas

GitHub recommends an Accept: application/vnd.github+json header and an explicit X-GitHub-Api-Version header.

Fine-grained tokens only authorize repositories and permissions selected when the token is created.

cURL

curl -X POST 'https://api.github.com/users/example-username/projectsV2/10/fields' \  -H "Authorization: Bearer $GITHUB_TOKEN" \  -H 'Accept: application/vnd.github+json' \  -H 'X-GitHub-Api-Version: 2026-03-10' \  -H 'Content-Type: application/json' \  -d '{  "name": "example-name",  "data_type": "text"}'

Parameters

Name	In	Type	Required	Description
username	path	string	Yes	The handle for the GitHub user account.
project_number	path	integer	Yes	The project's number.
name	body	string	Yes	The name of the field.
data_type	body	string	Yes	The field's data type.

Response 200 OK

{
  "id": 0,
  "issue_field_id": 0,
  "node_id": "string",
  "project_url": "https://api.github.com/projects/1",
  "name": "string",
  "data_type": "assignees",
  "options": [
    {
      "id": "string",
      "name": {
        "raw": "string",
        "html": "string"
      },
      "description": {
        "raw": "string",
        "html": "string"
      },
      "color": "string"
    }
  ],
  "configuration": {
    "start_day": 0,
    "duration": 0,
    "iterations": [
      {
        "id": "string",
        "start_date": "2026-09-03",
        "duration": 0,
        "title": {
          "raw": "string",
          "html": "string"
        },
        "completed": true
      }
    ]
  },
  "created_at": "2022-04-28T12:00:00Z",
  "updated_at": "2022-04-28T12:00:00Z"
}

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