letswork 2.0.0

Real-time collaborative coding via MCP — two developers, one codebase

LetsWork

Google Docs for AI-assisted coding — real-time collaboration on a local codebase using two independent Claude subscriptions.

What is LetsWork?

LetsWork is an MCP (Model Context Protocol) server that lets two developers work on the same local codebase simultaneously, each using their own Claude. One developer hosts, the other connects — with file-level locking to prevent conflicts.

How It Works

1. Developer A (Host) runs letswork start in their project folder
2. A secure HTTPS tunnel is created automatically via Cloudflare
3. A one-time URL + secret token is generated
4. Developer A shares both with Developer B (Guest)
5. Developer B connects: claude mcp add letswork --transport http <url>
6. Both can now read, write, and list files — with lock protection

Quick Start

Install

pip install letswork

Requirements

• Python >= 3.10
• cloudflared installed and available in PATH
• Git (recommended for conflict safety)

Host (Developer A)

cd /path/to/your/project
letswork start

You'll see: ╔══════════════════════════════════════════════════╗ ║ LetsWork Session Active ║ ║ ║ ║ URL: https://abc123.trycloudflare.com ║ ║ Token: a1b2c3d4e5f6... ║ ║ ║ ║ Share both with your collaborator. ║ ║ Press Ctrl+C to end session. ║ ╚══════════════════════════════════════════════════╝

Share the URL and token with your collaborator via Slack, Discord, or text.

Guest (Developer B)

claude mcp add letswork --transport http <URL_FROM_HOST>

Use the token when prompted. You now have full access to the shared codebase through your own Claude.

MCP Tools Available

Tool	Description
list_files	List files and directories with lock status
read_file	Read file contents (1MB limit)
write_file	Write to a file (requires lock)
lock_file	Lock a file for exclusive editing
unlock_file	Release a file lock
get_status	Show session info and active locks
send_message	Send a chat message to the other developer
get_events	Get activity events since a given index
get_pending_changes	View changes awaiting host approval
approve_change	Approve a pending change (host only)
reject_change	Reject a pending change (host only)

Security

• Unguessable tunnel URL (random Cloudflare subdomain)
• Cryptographic secret token (second auth layer)
• All traffic encrypted via HTTPS
• Path traversal prevention (no access outside project root)
• No accounts, no signup, no persistent credentials

CLI Commands

Command	Description
letswork start [--port PORT]	Start session (default port: 8000)
letswork stop	Stop instructions (use Ctrl+C in v1)
letswork status	Status instructions (use get_status tool in v1)

Architecture

Developer A's Machine: [Local Codebase] ← [MCP Server] ← [Cloudflare Tunnel] ← HTTPS URL ↑ Developer B connects here with secret token

Constraints (v1)

• Maximum 2 users per session (Host + Guest)
• Text files only (no binary support)
• 1MB file size limit per operation
• File operations only (no shell access for Guest)

License

MIT

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Built with the Model Context Protocol.