Permanent token for application
Please consider having a permanent token for advertisers application.
What for? You mean you don't like creating an Authorization, and shoving that authorization up someone's authentication, and then take that authentication and generate someone's end point, manually logging in, and then pulling your token out of that end point, so that you can generate a refresh token, which you can then use to, each hour, generate a new access token.
Why would you want to eliminate THAT?