Using https://invisioncommunity.com/developers/rest-api?endpoint=core/members/POSTindex I only see 5 parameters

I need to be able to set the user's verify status (to trigger a verification email), set their registration IP with a value I have, an autodetected timezone, a photoUrl. Is this possible in a sane way?

I've raised your suggestions internally - there is no way through the REST API to set these things presently.

What would your suggestion be? Potentially create one, save the uid, then do direct database writes or something?

You could create your own APP with an own REST API endpoint and your required features.

Its really very easy to implement this. 

6 hours ago, Fosters said:

You could create your own APP with an own REST API endpoint and your required features.

Its really very easy to implement this. 

Yes, if this is an immediate and important need, I would probably extend the existing REST API (either through a new app, or through a plugin overwriting the existing API endpoint method).