« On va où ? » Routing API: MCP server

Address geocoding, and bike, e-bike, kick scooter, motorcycle, wheelchair and walking routes across Europe, for AI assistants. One request turns a place name into coordinates; the next returns up to three routes (safe, balanced, fast) with what each one is worth: share of cycle lanes, unpaved surfaces, main roads and motorways, climb, and turn-by-turn steps.

Setup

1. Create a free API key at https://console.onvaou.app (10,000 requests per month, no credit card).
2. Add the server to your MCP client, for example Claude Desktop (claude_desktop_config.json):

{
  "mcpServers": {
    "onvaou-itineraires": {
      "command": "npx",
      "args": ["-y", "onvaou-itineraires-mcp"],
      "env": { "OVO_API_KEY": "ovo_live_..." }
    }
  }
}

Claude Code, same key, one line:

claude mcp add -e OVO_API_KEY=ovo_live_... onvaou-itineraires -- npx -y onvaou-itineraires-mcp

Both tools come with the server: ask for "a safe bike route from Gare de Rennes to the Thabor park" and the assistant geocodes the two names, then routes between the coordinates it got back.

Tools

geocode_address: turns an address, a place name, a station or a point of interest (query, 2 to 200 characters) into longitude/latitude candidates, best first, each with a full label, its type and a confidence score. type is one of address (a house number), street, locality (town, district), region, country, venue (a named place: station, hotel, monument) or other, and nothing else. Narrow the search with near (bias the ranking around a point, which must itself be inside the European coverage), country (ISO 3166-1 alpha-2), limit (1 to 5) and language (en, fr, de, it; en by default, any other value refused). it is accepted, but the geocoder does not label in Italian: the labels then come back in the local language of each place (Milano, München). Results come from Photon (OpenStreetMap) across Europe, and from the IGN Géoplateforme in France, which hands over to Photon when it is unavailable, returns nothing, or its best confidence is below 0.4; source says which one answered. Its coordinates go straight into compute_route. Searches have their own daily allowance and never count towards the monthly routing quota, so a lookup before a route is free.

compute_route: origin and destination ({ "lon": 2.3522, "lat": 48.8566 }), up to 8 waypoints, mode (bike, ebike, scooter, moto, wheelchair, foot), variants, avoid (ferries, steps, tolls, highways, unpaved, steep), instruction language (en, fr, de, es, it, nl, pt), and whether to include steps, the encoded polyline and the elevation profile. Give it coordinates: when you only have a place name, call geocode_address first.

Both tools are read-only, answer with a short readable summary first, then the same data as JSON, and report what the call cost: searches used today for the geocoder, requests used this month for the router. Coverage: Europe. Each answer carries its own attribution string, and the search also says which source served it: display that attribution next to any route or result you show.

Documentation: https://onvaou.app/developers/routing-api.html Code examples: https://github.com/onvaou-app/routing-api-examples

Development

npm install
npm test   # 11 tests, including a real MCP client over stdio against a mock API

License: MIT, © 2026 OVO SAS. Terms of the API: https://onvaou.app/cgv-api