Agent skill · operations · aiskillstore
agent-mail
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.
Why this skill is useful
Provides domain-specific coordination patterns and API commands for managing multi-agent workflows that the AI wouldn't reliably generate on its own.
What it needs
Requires python installed locally. About 7k tokens when loaded. Last updated 2026-08-07. 405 stars on the source repository.
What this skill does
MCP Agent Mail 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). Why This Exists Without coordination, multiple agents: Overwrite each other's edits or panic on unexpected diffs Miss critical context from parallel workstreams Require humans to relay messages between tools Agent Mail solves this with: Memorable identities (adjective+noun names like "GreenCastle") Advisory file reservations to signal editing intent Threaded messaging with importance levels and acknowledgments Pre-commit guard to enforce reservations at commit time Human Overseer for direct human-to-agent communication Starting the Server Default: http://127.0.0.1:8765 Web UI for humans: http://127.0.0.1:8765/mail Core Concepts 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. Agent Identity Agents register with adjective+noun names (GreenCastle, BlueLake). Names are unique per project, memorable, and appear in inboxes, commit logs, and the web UI. File Reservations (Leases) Advisory locks on file paths or globs. Before editing files, reserve them to signal intent. Other agents see the reservation and can choose different work. The optional pre-commit guard blocks commits that conflict with others' exclusive reservations. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills aiskillstore/agent-mail