@acoyfellow/lab-mcp

MCP server for Lab — expose chainable edge execution to Claude Desktop, Cursor, or any MCP client.

Quick setup

Add to your MCP config (Claude Desktop, Cursor, etc.):

{
  "mcpServers": {
    "lab": {
      "command": "npx",
      "args": ["-y", "@acoyfellow/lab-mcp"],
      "env": {
        "LAB_URL": "https://your-lab.workers.dev"
      }
    }
  }
}

Or install globally and run directly:

npm install -g @acoyfellow/lab-mcp
LAB_URL=https://your-lab.workers.dev lab-mcp

Tools

find

Discover capabilities and retrieve traces.

• path (optional) — dot-path into catalog, e.g. capabilities, execute.chain
• traceId (optional) — fetch a specific trace

execute

Run guest code on the Lab Worker.

Modes: sandbox · kv · chain · spawn · generate · seed

{
  "mode": "chain",
  "steps": [
    { "body": "return [1, 2, 3]", "capabilities": [] },
    { "body": "return input.map(n => n * 2)", "capabilities": [] }
  ]
}

Requirements

• Node.js 18+
• LAB_URL environment variable

License

MIT