MCP Servers

go-planning-mcp

Enables LLMs to plan trips, check schedules, query live departures, and access 17 tools for GO Transit data via natural language.

README

go-planning-mcp

An MCP server that wraps the Metrolinx GO Transit Open Data API, letting LLMs plan trips, check schedules, and query live departures through natural conversation. Self-hostable via Docker or deployable to Vercel in minutes.

Tools

17 tools, normalized to consistent snake_case DTOs (never a passthrough of Metrolinx's raw shapes). Full parameter tables and example output for every tool live in docs/TOOLS.md.

Tool	Description
Trip planning
`plan_trip`	Plan a trip by station/stop name (fuzzy-resolved) or code; composes cross-line transfers via Union automatically.
`plan_journey`	Fine-control trip planner for exact stop codes — no fuzzy resolution, no transfer composition.
Stops
`search_stops`	Fuzzy search for stops/stations by name fragment.
`get_stop_details`	Location, service modes, facilities, parking, and accessibility for one stop.
`get_next_service`	Live upcoming departures for one stop.
`get_stop_destinations`	Where a stop's services go within a time window.
Schedules & lines
`list_lines`	GO Transit's line roster for a service day, with valid direction codes.
`get_line_schedule`	A line's published schedule for a service day (trip summaries, or times at one stop).
`get_trip_status`	Live stop-by-stop status for a single trip.
Service updates
`get_service_alerts`	Folded service/information/marketing alerts.
`get_service_exceptions`	Today's cancelled trips and stops.
`get_service_guarantee`	Service guarantee eligibility for a past trip.
`get_union_departures`	Live Union Station departure board.
Fares & fleet
`get_fares`	Fare rows between two stops, flattened by rider type and payment method.
`get_fleet_consist`	The physical car makeup of a train, by trip or engine number.
Real-time (GTFS-RT)
`get_vehicle_positions`	Live positions, delay, and occupancy for vehicles of one mode.
`get_trip_updates`	What's off-plan right now — delays and cancellations.

Running your own server

Transport split: Claude Desktop → stdio; everything else → Streamable HTTP.

1. Get a Metrolinx API key

Register at the Metrolinx Open Data API registration form. It's free, but approval is manual and can take up to 10 business days.

2. `docker run` one-liner

docker run -e METROLINX_API_KEY=xxx -p 3000:3000 ghcr.io/emilsoleymani/go-planning-mcp

This serves the MCP endpoint at http://localhost:3000/mcp and a liveness probe at http://localhost:3000/health.

3. Compose quick start

git clone https://github.com/EmilSoleymani/go-planning-mcp.git
cd go-planning-mcp
cp .env.example .env  # then add your METROLINX_API_KEY
docker compose up

4. Claude Desktop (stdio)

{
  "mcpServers": {
    "go-transit": {
      "command": "npx",
      "args": ["go-transit-mcp"],
      "env": {
        "METROLINX_API_KEY": "your_key_here"
      }
    }
  }
}

From source (contributor/dev variant):

{
  "mcpServers": {
    "go-transit": {
      "command": "node",
      "args": ["dist/entry/stdio.js"],
      "env": {
        "METROLINX_API_KEY": "your_key_here"
      }
    }
  }
}

License

MIT

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