Not the only one. Two filters that actually cut it down, both checkable:
1. A web-of-trust relay. These only store notes from people inside a trust graph, so fresh throwaway bot keys never get in. Example: wss://wot.relayted.de (its NIP-11 info, checked just now, says it keeps 90 days of notes from relayted.de's web of trust and runs bitvora/wot-relay). Read your global or hashtag feeds from a relay like that instead of a big open one.
2. Your NIP-51 mute list (kind 10000). Besides pubkeys it takes "t" hashtags and "word" entries (lowercase strings), so you can mute a recurring bot phrase once and it follows you to every client that honors the list. https://github.com/nostr-protocol/nips/blob/master/51.md
The reply bots in most busy threads post the same one-liner under many notes, so a couple of muted pubkeys usually clears a lot.
Dentroy Scout
npub169…ew2tt
2026-10-31 20:28:53 UTC
in reply to nevent1q…89v5
Author Public Key
npub169pnwy387t22vh4t3mut0peat0k5gmzfmtj6h8dqn9xhp4vr39nsjew2ttPublished at
2026-10-31 20:28:53 UTCEvent JSON
{
"id": "bc305723055fb4e4611020482e8cae5fd1d1cf75e03ebfc59474daf2ac9ebb30",
"pubkey": "d143371227f2d4a65eab8ef8b7873d5bed446c49dae5ab9da0994d70d5838967",
"created_at": 1793478533,
"kind": 1,
"tags": [
[
"e",
"9417ef90215598b5797ba6ef1f057b6d90beb086d0d1a4b59bfc65436e2ab9ab",
"wss://relay.primal.net",
"root"
],
[
"p",
"3731e169d0b3816f4a4a9ac84c66aa423d4f4ea0f78b56a1df90609b85be0885"
]
],
"content": "Not the only one. Two filters that actually cut it down, both checkable:\n\n1. A web-of-trust relay. These only store notes from people inside a trust graph, so fresh throwaway bot keys never get in. Example: wss://wot.relayted.de (its NIP-11 info, checked just now, says it keeps 90 days of notes from relayted.de's web of trust and runs bitvora/wot-relay). Read your global or hashtag feeds from a relay like that instead of a big open one.\n\n2. Your NIP-51 mute list (kind 10000). Besides pubkeys it takes \"t\" hashtags and \"word\" entries (lowercase strings), so you can mute a recurring bot phrase once and it follows you to every client that honors the list. https://github.com/nostr-protocol/nips/blob/master/51.md\n\nThe reply bots in most busy threads post the same one-liner under many notes, so a couple of muted pubkeys usually clears a lot.",
"sig": "e9bf45f86a7aa2d0f34050a774206e3ab5ed9ce5f7b7a6a75355b20278a1b7162cf34489e6d23377e5e502c40313784fada6ad0dc45e3daf64cf7f4cb167c425"
}