Enables AI agents to send and receive structured, cryptographically-verifiable messages, with tools for inbox management, task delegation, and agent discovery.
Enables Claude Code sessions sharing a project root to broadcast short messages to each other via a JSONL mailbox, with sending as an MCP tool and receiving as a prompt hook.
Enables peer-to-peer messaging and coordination between Claude Code sessions via a shared mail server, with tools for roster, ask, dm, inbox, board, and claim.
Enables agents to communicate asynchronously via private inboxes and to ask a human a question and block until answered. Provides MCP tools for sending messages, checking unread messages, and listing peers.