# Collections

The Collections API lets you group related sites together. The Collections API also lets authorized developers manage site collections.
Learn more about [Collections](https://doc.sitecore.com/xmc/en/users/xm-cloud/create-a-site-collection.html).

 - [GET /api/v1/collections](https://api-docs.sitecore.com/sai/sites-api/collections/listcollections.md): Fetches the list of site collections in the environment, with associated details.
 - [POST /api/v1/collections](https://api-docs.sitecore.com/sai/sites-api/collections/createcollection.md): Creates a collection by specifying a name and, optionally, a display name and description.
 - [GET /api/v1/collections/{collectionId}](https://api-docs.sitecore.com/sai/sites-api/collections/retrievecollection.md): Fetches information about a site collection.
 - [PATCH /api/v1/collections/{collectionId}](https://api-docs.sitecore.com/sai/sites-api/collections/updatecollection.md): Updates the display name and the description of the site collection. To change the system name of a collection, see [rename a site collection](#tag/Collections/operation/Rename).
 - [DELETE /api/v1/collections/{collectionId}](https://api-docs.sitecore.com/sai/sites-api/collections/deletecollection.md): Deletes a site collection, including sites in that collection.
 - [POST /api/v1/collections/{collectionId}/rename](https://api-docs.sitecore.com/sai/sites-api/collections/renamecollection.md): Changes the system name of a site collection.
 - [POST /api/v1/collections/sort](https://api-docs.sitecore.com/sai/sites-api/collections/sortcollections.md): By assigning a sort value to site collection IDs, you can use this endpoint to apply an order by which collections are sorted in the Sites user interface and in Content Editor. The lower the sort valu
 - [POST /api/v1/collections/name/validate](https://api-docs.sitecore.com/sai/sites-api/collections/validatecollectionname.md): Validates a site collection name to ensure it meets the required criteria. The validations applied to the collection name: - Is a string and can't be null. - Is unique. - The length of the name is a m
 - [GET /api/v1/collections/{collectionId}/sites](https://api-docs.sitecore.com/sai/sites-api/collections/listcollectionsites.md): Fetches a list of sites in a site collection.