spawn-manager
Spawn Manager — Multi-Agent Parallel Development
Spawn Manager helps you launch, coordinate, and manage multiple Claude Code instances (peers) working in parallel on the same machine. It builds on Claude Peers MCP (the built-in peer discovery and messaging layer) and adds structured spawning patterns, team templates, cost tracking, and safety controls.
Use this when your task benefits from parallelism: independent workstreams, multi-perspective review, research fanout, or any scenario where 2-8 Claude Code instances working simultaneously outperform one instance working sequentially.
Prerequisites
Claude Peers MCP ships with Claude Code. No configuration needed. Every Claude Code instance on the same machine can discover and message other instances automatically.
Four MCP tools are available to every instance:
| Tool | Purpose |
|---|---|
list_peers |
Discover active Claude Code instances (scopes: machine, directory, repo) |
send_message |
Send a message to a specific peer by its instance ID |
set_summary |
Broadcast a 1-2 sentence summary of your current work (visible to all peers) |
check_messages |
Poll for incoming messages from other peers |