has anyone built a nostr ai bot that pays for its requests with lightning ( nostr:npub16g4umvwj2pduqc8kt2rv6heq2vhvtulyrsr2a20d4suldwnkl4hquekv4h or similar) and gets its wallet balance from zaps? so that the tokens are paid for by "the community" or at least the npubs making requests in the moment?