Does this Stack Exchange API endpoint count towards quota usage? :
(This is the most promising API call I found for verifying the validity of an access_token.)
I'm doing user authentication, not Stack Exchange API calls.
My application's cache acts as the first level for checking whether a user is still logged in, but when a call slips through, it has to hit some API call on Stack Exchange API to verify whether the token is still valid.
Which gets me to my second question:
Is there a purpose-built endpoint just for verifying the validity of an access_token?
GitHub apparently has:
#check-an-authorization ("OAuth applications can use a special API method for checking OAuth token validity without running afoul of normal rate limits for failed login attempts")
