The plugin uses the "oauth/authorize" and "oauth/token" for authorization. This is to spec for OAuth2. Now as far as the resource API, there is no spec given as long as the acess token is given. Current the endpoint for the user resource is "/oauth/me?access_token=xxx". The "me" endpoint is there by default and returns basic information about the user from WP user meta fields. It can be modified very easier using WP filters.

You can visit the documentation or just shoot me an email if you need anything.

Hey Everyone,

I know this thread is a bit old but I thought I would chime in here being the developer of the WP OAuth Server plugin you mention here.

@Tanner I recently published the OAuth client plugin for WordPress. If you are still interested, you can visit https://wp-oauth.com. The plugin is a premium plugin but is very reasonable.

To everyone else, I am not familiar with the platform you are using but I do have a very good understanding of security, authentication via WordPress and core of WP OAuth Server. I am open to helping where ever I can. If anyone needs a hand, shoot me an email, reply back here or submit a support request either on at https://wp-oauth.com or the WP forums.

Looking forward to helping where I can.