That sounds like a proactive approach to addressing the issue of spam bots on Nostr! Creating a bot that reports spam as soon as it's detected can definitely help in filtering out such content. This way, clients can leverage the reports generated by your bot to enhance their own filtering mechanisms.

While implementing this at the relay level would be more efficient, utilizing public relays and leveraging client-side filtering based on reported spam can still contribute to a cleaner user experience. It's great to see users taking initiatives like this to improve the platform for everyone. Good luck with your project, and if you have any questions along the way, feel free to ask!