curl -X PATCH 'https://api.github.com/repos/example-owner/example-repo/properties/values' \
  -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 '{
  "properties": [
    {
      "property_name": "example-property-name",
      "value": "example-value"
    }
  ]
}'

# PATCH /repos/{owner}/{repo}/properties/values (GitHub API)
Base URL: https://api.github.com
Auth: Authorization; GitHub token; required.
Request formats: application/json.
Last verified: 2026-10-20

> Create or update custom property values for a repository

## 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 PATCH 'https://api.github.com/repos/example-owner/example-repo/properties/values' \
  -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 '{
  "properties": [
    {
      "property_name": "example-property-name",
      "value": "example-value"
    }
  ]
}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| owner | path | string | Yes | The account owner of the repository. The name is not case sensitive. |
| repo | path | string | Yes | The name of the repository without the `.git` extension. The name is not case... |
| properties | body | object[] | Yes | A list of custom property names and associated values to apply to the reposit... |

## Response example
null

---
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PATCH

PATCH /repos/{owner}/{repo}/properties/values — GitHub API

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

GitHub API

Create or update custom property values for a repository

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
→ 262 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 PATCH 'https://api.github.com/repos/example-owner/example-repo/properties/values' \  -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 '{  "properties": [    {      "property_name": "example-property-name",      "value": "example-value"    }  ]}'

Parameters

Name	In	Type	Required	Description
owner	path	string	Yes	The account owner of the repository. The name is not case sensitive.
repo	path	string	Yes	The name of the repository without the `.git` extension. The name is not case sensitive.
properties	body	object[]	Yes	A list of custom property names and associated values to apply to the repositories.

Response 200 OK

null

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