Berlin Transport

What it is

A Cloudflare Worker that wraps the VBB transport API. It uses Code Mode: rather than registering a tool per API operation, it describes the API as an OpenAPI spec and exposes two tools — the model reads the spec, then writes a short JavaScript snippet that runs in a sandboxed Dynamic Worker and chains several calls in one go.

What you get

• search — read the OpenAPI spec to find the operation, its parameters and the shape of what comes back
• execute — run an async JavaScript snippet calling codemode.request({ method, path, query }); the host proxies the HTTP call, and the sandbox has no direct network access of its own
• Three underlying operations the spec exposes: getLocations for stops, stations, addresses and points of interest; getDepartures for what is leaving a stop next; getJourneys for routes between two places
• Chaining in a single sandbox run — find the stop, then fetch its departures, without a round trip back to the model in between

Requirements

No account and no key for the transport data itself. npm install then npm run dev gives a local server at http://localhost:8787/mcp; npm run deploy publishes the Worker to your own workers.dev subdomain, which needs a Cloudflare account. Clients that speak remote MCP connect to the URL directly; Claude Desktop reaches it through npx mcp-remote with the URL as the argument. To wrap a different API instead, change API_ORIGIN and the OpenAPI spec in src/index.ts.

Setup effort

Paste a URL — add the endpoint to your client

Tools you get

2 tools named in the project's documentation.

Requires

npx on PATH

Where it runs

The documented client connects to a hosted endpoint.