"Messenger" matching MCP servers:

Proof of control for AI agents, through the proof.holdings API: verify domains, phone numbers and messenger accounts, ask a human to approve an action, and issue and verify Proofs of Delegation.

Enables AI agents to send messages, discover peers, and chat through the Lepus Messenger platform using any MCP-compatible tool.

Enables coding-agent sessions to post and collect durable letters through a fully local, SQLite-backed post office, with delivery retried across restarts until the recipient acknowledges. Any MCP client or shell-capable agent can use it to send, read, acknowledge, and review the history of messages between sessions.