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# The Google Cloud Storage API

#### Experimental!

Google Cloud Storage API for Google App Engine is an experimental, innovative, and rapidly changing new feature for App Engine. Unfortunately, being on the bleeding edge means that we may make backwards-incompatible changes to Google Cloud Storage API for Google App Engine. We will inform the community when this feature is no longer experimental.

The Google Cloud Storage API offers another method for your application to store and serve data from the Google Cloud Storage service. While the Cloud Storage API offers a RESTful API, this documentation describes how use the Cloud Storage API on App Engine.

The Cloud Storage API offers several features not available in the App Engine Datastore or Blobstore, such as:

- Access Control Lists (ACLs) to manage access to your data
- `POST` policy support
- OAuth 2.0 authentication and authorization
- A RESTful API

This documentation describes the Cloud Storage Java API for Google App Engine. It has the following sections:

- Overview
- API Reference