Sorry, we are aware that there are a variety of internal specifications and products created using the API, and we do not provide individual answers as to whether a particular action violates the terms of the agreement.
We ask that you make your own judgment as to whether or not you can use the API.
Please use the API in compliance with the Rakuten web service Terms of service in the API specification.
Introduction: https://webservice.rakuten.co.jp/guide
Terms of service: https://webservice.rakuten.co.jp/guide/rule