We've added the following new API features from the May update in kintone REST API section.
- Get Comments API
Comments can be retrieved from a record by specifying an App ID and Record ID.
- Add Comment API
A comment can be added to a record by specifying an App ID and Record ID. Users can also be mentioned by using this API.
- Delete Comment API
A comment can be deleted from a record by specifying an App ID, Record ID, and Comment ID.
- Update Assignees API
Assignees of a record can be updated with user authentication or API tokens that have permission to both manage the app and view records. To update the status, use the Update Status API.