A mail-like coordination layer for coding agents exposed as an HTTP-only FastMCP server. Provides memorable identities, inbox/outbox, file reservation leases, contact policies, searchable message history, and Human Overseer messaging. Backed by Git (human-auditable artifacts) and SQLite (fast queries with FTS5).
Default: http://127.0.0.1:8765 Web UI for humans: http://127.0.0.1:8765/mail
Projects Each working directory (absolute path) is a project. Agents in the same directory share a project namespace. Use the same projectkey for agents that need to coordinate.
MCP Agent Mail - Mail-like coordination layer for multi-agent workflows. Identities, inbox/outbox, file reservations, contact policies, threaded messaging, pre-commit guard, Human Overseer, static exports, disaster recovery. Git+SQLite backed. Python/FastMCP. Source: dicklesworthstone/mcp_agent_mail.