Thank you! We will eventually offer a relay-as-a-service offering that allows easily configurable AUTH for read access along with existing write control tools.

Is your relay completely custom? Or is there an existing relay implementation which restricts read access to authorized users in the way that you've demonstrated? I'm looking at nip 42 implementations and finding that they usually about restricting write access rather than read access. Or maybe I've misunderstood. I would truly appreciate your input!