Access to RPC functions without authentication

Game Design
1

Hi ,
I want to make an RPC function that would check if the email that the user enters exists or not. It happens when the user is not authenticated.

  1. How do I create rpc functions and gain access to the theme without requiring authentication?

  2. How can we access the server before we authenticate?

Thanks in advance.

2

Any RPC is anonymous by default, it is your decision to check context for userId