y0slack

y0mcp

Control your dev projects from Slack using your claude.ai subscription.

Multi-project routing. Permission relay. Always-on with auto token refresh. No API key required — works with claude.ai Pro/Max.

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Why y0mcp

	OpenClaw	Claude Code Channels	y0mcp
Slack	✓	✗	✓
Multi-project routing	✓	✗	✓
Permission relay in Slack	✗	✗	✓
claude.ai subscription	✗	✓	✓
API key required	✓	✗	✗
Auto token refresh	✗	✗	✓
Always-on (launchd/systemd)	✗	✗	✓
Container logs (Dozzle)	✗	✗	✓

How it works

You → Slack #project-a → y0mcp → Claude Code in ~/projects/project-a
                               ↕ permission relay (✅/❌ in Slack)
                               → Dozzle API (optional)

Quick Start

1. Add marketplace and install plugin — in Claude Code terminal:

/plugin marketplace add es-ua/y0mcp
/plugin install y0slack@y0mcp

2. Create a Slack App — see Setup Slack App

3. Create an agent:

bash scripts/new-agent.sh

4. Start:

# Mac
launchctl load ~/Library/LaunchAgents/dev.y0mcp.my-project.plist

# Linux
systemctl --user enable --now y0mcp-my-project

5. Pair — message the bot in Slack → get code → /pair CODE in terminal

Permission relay

🔴 Permission required

Action: `rm -rf ./node_modules`
Reason: Cleaning before reinstall

React ✅ to approve or ❌ to deny (timeout: 5 min)

Always-on

• Agents start automatically on login
• Auto-restart on crash (KeepAlive)
• OAuth token refreshed every 2 hours

Multiple projects

Each agent is independent — separate Slack channel, separate repo, separate process. Run as many as you need. Token refresh uses file locking to prevent conflicts.

Requirements

• macOS or Linux
• Claude Code CLI (claude.ai login)
• claude.ai Pro or Max subscription
• Slack workspace (admin access to create apps)

Security

• Socket Mode — no public URL exposed
• Pairing — only you can message the agent
• Permission relay — approve/deny risky actions from Slack
• Token refresh under file lock — no race conditions

Project structure

y0mcp/
├── plugins/slack/       ← Slack channel plugin (v1)
├── scripts/             ← Install, token refresh, agent setup
├── docs/                ← Documentation
└── site/                ← y0mcp.dev (Astro Starlight)

Known issues

Claude Code Channels launched March 20, 2026 as a research preview. There is a known bug where notifications/claude/channel are not delivered to the session — this affects all channel plugins including the official Telegram plugin (#36802, #36472). y0mcp will work once this is fixed upstream.

Requires Claude Code v2.1.80+ and --dangerously-load-development-channels flag until accepted to the marketplace.

Roadmap

• v1: Slack + permission relay + always-on ← now
• v2: Hosted mcp.y0mcp.dev — connect agents to cloud, API keys, subscriptions

License

MIT