I could need a integration of NodeBB to my planned site.
Read topics, boards and user info should be no problem. NodeBB read only API seems to do that job.
But is it possible to process login or user registration via API (in the future)? My php application could try to check NodeBB login / user. If NodeBB login via API was successfully also the CMS user gets logged in. If the user doesn't exist at CMS side (not logged in before) an account would be created.
So my website could use NodeBB user backend if login / logout via API will be possible in the future 
HTTPS shouldn't be needed because the api call comes from the local machine?