[Vuejs]-How to pass user information from frontend to backend

You could add the extra information (in a custom claim) to the access token, then it would be available to the backend when you make the request.

Another strategy would be to make use of the /userinfo endpoint to request the user profile, although this will require an extra call from the backend.

The tradeoffs here are the increased size of the token with custom claims vs the extra API call with the /userinfo endpoint.