FIRES

FIRES (Fediverse Intelligence Recommendations and Replication Endpoint Server) is an open specification and reference server for sharing moderation advisories between fediverse instances. Instead of each Mastodon admin discovering a spam wave or a bad instance alone, a trusted source publishes advisories and label recommendations, and subscribing servers pull them and decide whether to apply them.

It's early infrastructure from the FediMod project. If you run an instance, it's worth watching; if you run several, it's worth trying.