# Cloud Storage API This folder contains protocol buffer definitions for an API only accessible to select customers. Customers not participating should not depend on this file. Please contact Google Cloud sales if you are interested. Unless told otherwise by a Google Cloud representative, do not use or otherwise rely on any of the contents of this folder. If you would like to use Cloud Storage, please consult our [official documentation](https://cloud.google.com/storage/docs/apis) for details on our XML and JSON APIs, or else consider one of our [client libraries](https://cloud.google.com/storage/docs/reference/libraries).