I'm developing a Spring Boot REST API and I'd like to use GitHub as an Authorization Server for my Resource Server. I already achieved this with Google using https://www.googleapis.com/oauth2/v3/certs to verify the bearer tokens. However, I can't find the same for GitHub.
Is it possible to use GitHub as an Authorization Server (to verify tokens in my server), or only as a client?
If this is not possible, are there other options besides Google and Microsoft?
Thank you!
