- CollectionCommunication
- Classificationagent-native
- MCPAvailable
- Agent SkillUnavailable
- InterfacesMCP · CLI
What it does
MCP Agent Mail provides a mailbox-style coordination layer for coding agents. Agents register persistent identities, exchange structured messages, search threads, and coordinate edits via advisory file reservations. Message artifacts are persisted in Git while query and indexing workloads are handled by SQLite.
Agent-facing interfaces
- Catalog protocols: MCP, CLI
- MCP: ✅ Available
- Agent Skill: ⚠️ Community skills exist, but no official first-party SKILL.md package is published as of April 2026.
- Onboarding type:
mcp
How agents onboard
uvx mcp_agent_mail
See the full onboarding section in the dossier.
Protocol surface
| Interface | Detail |
|---|---|
| MCP tools | Message, thread, reservation, and agent lifecycle operations |
| MCP resources | Read-only mailbox, thread, reservation, and diagnostics views |
| CLI | uvx mcp_agent_mail startup and ops utilities |
| Git + SQLite | Durable artifact layer + indexed query layer |