The present disclosure generally relates to managing content item collections. A collection management system receives a request for collection item metadata associated with a collection item. Collection management system obtains a content item identifier corresponding to the collection item identifier. Collection management system requests content item metadata from a content management system. Collection management system receives from the content management system content item metadata corresponding to the content item identifier. Collection management system filters the content item metadata to remove a portion of the content item metadata comprising privileged information. Collection management system retrieves collection item metadata using the collection item identifier. Collection management system adds the filtered content item metadata to the collection item metadata. Collection management system sends to the client device the collection item metadata for the content item to be displayed, without sending the portion of the metadata comprising privileged information.