Does anybody know it? Their documentation discusses getting a user token here and here, but that's not what I need. The documentation clearly states on these pages linked about that "it is recommended that you utilize an Authorization Code or Implicit Grant OAuth flow instead."
The documentation does not include the authorization endpoint. Something like
https://auth.exacttargetapis.com/v1/oauth/authorize?client_id=#&callback_url=url You know, something like that but not that because that doesn't work.