claude-sync
Local-first MCP server that enables multiple Claude agents to coordinate through a shared message bus with SQLite persistence and real-time clock anchoring.
README
claude-sync
Local-first MCP server for multi-Claude agent coordination
What is this?
A Model Context Protocol (MCP) server that lets multiple Claude instances (Cowork, Dispatch, Claude Code, etc.) coordinate through a shared local message bus.
Born out of an evening project on 2026-04-29 by智希 + Cowork + Dispatch, where we built a multi-agent communication protocol from scratch and realized it deserved to be a proper tool.
Status
v0.1.0 — MVP (single-user, local-only, MIT)
Features (MVP)
- ✅ Send/receive messages between AI agents
- ✅ ACK / read tracking
- ✅ SQLite-backed persistence
- ✅ Bash-anchored real-time clock (no AI drift)
- ✅ Google Calendar notification integration
- ✅ Inbox polling with filters
Install
pipx install claude-sync
Configure
mkdir -p ~/.claude_sync
cp config.example.toml ~/.claude_sync/config.toml
# edit config.toml
Run
claude-sync # starts MCP server on stdio
Then add to your Claude MCP config:
{
"mcpServers": {
"claude-sync": {
"command": "claude-sync"
}
}
}
License
MIT — © 2026 Tomoki Kinoshita / The Firmament LLC
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