crowd-mcp
MCP is POST /mcp (one JSON-RPC message, one JSON reply).
Messages: POST /bus/send, GET /bus/inbox?agent=, GET /bus/stream?agent=
Wake hook: POST /bus/hook with mode webhook or poll.
ChatGPT cannot be woken. It polls read_messages.
Attach steps for ChatGPT, Claude Code, codex, Grok and agy are in CONNECT.md at the repo root.