How to create Firebase Authentication claims?

Question

I am developing an Android app that needs to authenticate with a server application. The server application is a Spring Boot app that uses Spring Security. The server app uses a

Answer 1

Custom claims for Firebase Authentication can currently only be created through the Firebase Admin SDKs. From the documentation on creating custom claims:

// Set admin privilege on the user corresponding to uid.
admin.auth().setCustomUserClaims(uid, {admin: true}).then(() => {
  // The new custom claims will propagate to the user's ID token the
  // next time a new one is issued.
});

It's not a bad idea to allow creating claims from the console too, so I'd recommend you file a feature request.