mcp_agent_mail

Why we included this project

Running several coding agents in parallel on one codebase tends to end the same way: files get overwritten, workstreams miss each other's context, and nobody has a clear record of what changed or why. Agent Mail is an MCP server that gives agents a way to talk without stepping on each other. Each one registers a memorable identity, exchanges Markdown messages through a persistent inbox, and can claim a voluntary file lease to signal intent before editing a path. The exchange history lives in Git, so it stays human-auditable, with a SQLite index on top for fast search and threading. It is built for FastMCP-aware tools such as Claude Code, Codex, and Gemini CLI, which makes it a practical coordination layer for multi-agent workflows rather than a demo. If you have ever relayed context between agent panes by hand, this is a lightweight way to hand that job back to the agents.