---
title: GitHub App installations
allowTitleToDifferFromFilename: true
shortTitle: Installations
intro: 'The {% data variables.product.prodname_github_app %} installations API enables you to get information about installations of your {% data variables.product.prodname_github_app %} and perform actions within those installations.'
topics:
  - API
miniTocMaxHeadingLevel: 3
versions:
  fpt: '*'
  ghes: '*'
  ghae: '*'
  ghec: '*'
---

## About the {% data variables.product.prodname_github_app %} installations API

An _installation_ refers to any user or organization account that has installed the app. For information on how to authenticate as an installation and limit access to specific repositories, see "[Authenticating as an installation](/apps/building-github-apps/authenticating-with-github-apps/#authenticating-as-an-installation)."

To list all GitHub App installations for an organization, see "[List app installations for an organization](/rest/orgs/orgs#list-app-installations-for-an-organization)."