0n3
MCP servers · GraphHopper · connector

Connect Claude (desktop & claude.ai) to GraphHopper

One line gives Claude (desktop & claude.ai) your GraphHopper account as tools: 15 endpoints, route, matrix, geocode, called with your own connection. No key in the prompt, a receipt for every call, revoke Claude (desktop & claude.ai)'s access alone any time.

Get the line for Claude (desktop & claude.ai)Connect GraphHopper first

Three steps

  1. Create a free 0n3 account and connect GraphHopper. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into Claude (desktop & claude.ai). The Claude app or claude.ai. Add 0n3 in Settings and sign in once.
  3. Ask Claude (desktop & claude.ai): whoami. Then: "Route in GraphHopper".
Claude desktop app and claude.ai
  1. In Claude, open Settings. Click Connectors. Click Add custom connector.
  2. For the name, type 0n3. For the URL, type https://0n3.app/mcp
  3. Click Connect. Sign in with your 0n3 email and password.
  4. Start a new chat. Turn on 0n3 in the tools menu. Type: "whoami"

You don't need to paste a key. You can turn this off any time in 0n3 under Tokens.

The line above carries a placeholder; 0n3.app/install mints a real key named for Claude (desktop & claude.ai) and fills it in.

What Claude (desktop & claude.ai) can then do in GraphHopper

Route · The road route between two or more points: miles, time, optional turn-by-turn and geometry2
RoutePOST /route
Route getGET /route
Matrix · Every-to-every road distances and times for a set of points in one call3
MatrixPOST /matrix
Matrix asyncPOST /matrix/calculate
Matrix resultGET /matrix/solution/{jobId}
Geocode · A place name to coordinates, and back2
GeocodeGET /geocode
Reverse geocodeGET /geocode
Isochrone · The area reachable from a point within a time or distance1
IsochroneGET /isochrone
Optimize · Vehicle routing: which vehicle visits which stops, in what order3
OptimizePOST /vrp
Optimize asyncPOST /vrp/optimize
Optimize resultGET /vrp/solution/{jobId}
Cluster · Group customers into territories by road distance3
ClusterPOST /cluster
Cluster asyncPOST /cluster/calculate
Cluster resultGET /cluster/solution/{jobId}

All 15 GraphHopper endpoints →

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