# POST /orgs/{org}/properties/installations (GitHub API)
Base URL: https://api.github.com
Auth: Authorization; GitHub token; required.
Request formats: application/json.
Last verified: 2026-09-29

> Register an app installation for external custom properties

## 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/orgs/example-org/properties/installations' \
  -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 '{
  "display_name": "example-display-name"
}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| org | path | string | Yes | The organization name. The name is not case sensitive. |
| display_name | body | string | Yes | The display name for this app installation's external custom properties in th... |
| installation_id | body | integer | No | The unique identifier of the GitHub App installation to register for managing... |

## Response example
{"display_name":"string","installation":{"id":0}}

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