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Local-first web search, fetch, crawl and research for AI coding agents over MCP — no API keys.
★ 5.5k starsAGPL-3.0
View guide →Gmail for coding agents: identities, inboxes, threads, and file leases over FastMCP, Git, and SQLite.
mcp_agent_mail is an open-source dev tools project by Dicklesworthstone (Dicklesworthstone/mcp_agent_mail on GitHub). It has 2,197 GitHub stars and 229 forks, is released under the NOASSERTION license, and was last updated on GitHub on 29 September 2026.
Decide which parallel agents or workstreams need to coordinate, and on which repositories.
Install with the one-line installer, which sets up the environment, integrates detected agent tools, and starts the server on port 8765.
Register an identity for each agent in the project, and reserve files before editing them to signal intent.
Have agents exchange threaded messages, check inboxes, and acknowledge work; restart later with the saved-token run script.
Agents register persistent, memorable identities and can inspect a directory of active agents, programs, and models.
Agents send GitHub-Flavored Markdown messages with images, and can search, summarise, and thread conversation history.
Leases on files or globs signal editing intent and prevent parallel agents from stepping on each other's changes.
Messages and artifacts are stored in Git for human auditability, while SQLite indexes them for fast queries.
Bundled macros cover common flows like starting a session or reserving files, and resource URIs give quick inbox and thread reads.
The installer detects installed coding tools and configures them, and integrates with the Beads task planner for dependency-aware work selection.
The manual path uses uv with a Python 3.14 virtual environment.
git clone https://github.com/Dicklesworthstone/mcp_agent_mail.git
cd mcp_agent_mail
uv venv -p 3.14 && uv syncThe bundled script wires up installed coding-agent tools and starts the MCP HTTP server on port 8765.
scripts/automatically_detect_all_installed_coding_agents_and_install_mcp_agent_mail_in_all.shReuse the saved bearer token with the helper script, or just type the am alias the installer adds.
scripts/run_server_with_token.shIt is maintained by Dicklesworthstone on GitHub; check the repository for the current license terms, as the catalog metadata lists NOASSERTION.
The server itself is open source and free to run locally; the agents that use it run on your own model accounts. A separate commercial companion app is mentioned in the README but is not required.
Agent Mail needs no LLM API key of its own; it is coordination infrastructure for agents that already have their own model access.
Chat-based coordination consumes context and disappears with the session; Agent Mail persists identities, threads, and file leases in Git and SQLite, searchable across sessions and agents.
Run the one-line installer from the README, or clone the repo, uv sync, and run the auto-detect integration script to start the server on port 8765.
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