i see. So let's take an example: You have an API that's "/user" which returns html/css for user's info. In that API, do you query another API of yours "/user" which returns a json containing the user's information which is then "rendered"? Or do you directly query your database and use that info?
SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).