API, Please make an API?
I could integrate my RSVP system into it which requires more specific features but could use this to create the base for the event.
Not the person who asked for it, but I think they were suggesting they'd use the API to retrieve information about RSVPs/current state of a planned event. (Perhaps even RSVP on someone else's behalf.)
Ofc, I want to use a vanilla rsvp platform, you mentioned tools which are more than that. That's not a problem just I don't need those stuffs... and I want to selfhost my services.