Just PRed some of the kinds I'm using in TENEX for agents:

NIP-AE:
kind 4199: agent definition,
kind 4129: agent lessons,
kind 4201: agent nudges,
kind 14199: agent attribution
https://github.com/nostr-protocol/nips/pull/2220

an agent is a pubkey that derives its instruction set from agent definition + all trusted* agent lessons + (trusted) human corrections, compiled for contradictions.

NIP-AD:
kind 4200: MCP servers
kind 4202: skills announcements
https://github.com/nostr-protocol/nips/pull/2221

cc @Justin Moon