creating a prototype for Google Docs addon

creating a prototype for Google Docs addon with app script which will download/export file on behalf of user and send to api. It should use only least scope so it does not cause problem getting the approval from google. Workflow is user open google docs/speadsheet with addop button it should be able to send the file to api using these scope.
.../auth/script.external_request
.../auth/drive.install
.../auth/workspace.linkpreview
.../auth/documents.currentonly
.../auth/spreadsheets.currentonly
.../auth/drive.file
openid
.../auth/userinfo.profile
.../auth/userinfo.email
.../auth/script.locale