This is very similar to keycloak right? I use next auth when developing using nextJS but mostly always use my own backend to manage the auth and tokens even though they offer schema for backend integration. There has been many discussion and confusion at next auth repo on the flow to register user to backend services after getting the token from sso services. I’ve never heard or encounter issues related to saving the tokens or managing them but i do hope that this product solves some of the pain point for next auth.