| Class name | Class description |
| About | User information class, including the user name, storage quota limits, maximum size of a file that can be uploaded by the user, and whether the user needs to update the security policy. |
| Change | File or drive change class. |
| ChangeList | Change list class, which is used to parse and serialize change list data transferred over the network. |
| Channel | Notification channel class used to monitor resource changes. |
| File | File metadata class. |
| FileList | File list class. |
| Permission | File permission class. |
| PermissionList | File permission list class. |
| StartCursor | StartCursor object class, that is, cursor for the start page of file changes. |
| User | User details class. |
| Reply | Replies to a comment on a drive file. |
| ReplyList | Reply list class. |
| Comment | File comment model class. |
| CommentList | CommentList entity and file permission class. |