Travel times between many places

Driving, walking or cycling distances and travel times from up to 25 origins to up to 25 destinations in one call, as a matrix with a map and a CSV.

Request

curl -X POST https://mcp.terra-lab.ai/v1/tools/get_travel_times \
  -H "Authorization: Bearer $TERRALAB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"origins":["Lyon","Grenoble"],"destinations":["Annecy","Chambéry","Valence"],"mode":"driving"}'

import os
import requests

response = requests.post(
    "https://mcp.terra-lab.ai/v1/tools/get_travel_times",
    headers={"Authorization": f"Bearer {os.environ['TERRALAB_API_KEY']}"},
    json={
        "origins": ["Lyon", "Grenoble"],
        "destinations": ["Annecy", "Chambéry", "Valence"],
        "mode": "driving",
    },
    timeout=120,
)
response.raise_for_status()
print(response.json()["structuredContent"])

const response = await fetch('https://mcp.terra-lab.ai/v1/tools/get_travel_times', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.TERRALAB_API_KEY}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "origins": [
      "Lyon",
      "Grenoble"
    ],
    "destinations": [
      "Annecy",
      "Chambéry",
      "Valence"
    ],
    "mode": "driving"
  }),
});
const data = await response.json();
console.log(data.structuredContent);

Other valid request bodies:

{"origins":[{"latitude":48.8566,"longitude":2.3522,"name":"Depot"}],"destinations":["Versailles","Saint-Denis","Créteil"],"mode":"driving"}

Parameters

A JSON object in the request body; in an MCP client, the arguments of the tool call.

Response

structuredContent holds the result, content the same result as text for a model, and isError is true when the tool refused the request or failed; then structuredContent.code, message and hint say what to change.

{
  "structuredContent": {
    "sources": [{ "name": "...", "licence": "...", "url": "..." }],
    "downloads": [{ "label": "...", "format": "...", "url": "...", "name": "..." }]
  },
  "content": [{ "type": "text", "text": "..." }],
  "isError": false
}

Every result lists its sources with their licence. File results come as downloads: each link builds its file when opened.

Errors

A missing key answers 401, an empty balance 402, too many calls 429. A call that fails or finds nothing is not counted. See Errors and rate limits.

Description for agents

The text the server gives an agent to decide when to call this tool:

Use this when the user wants driving, walking or cycling distances and travel times between many places at once: a distance or travel-time matrix from up to 25 origins to up to 25 destinations (625 pairs) in one call, for example from each warehouse to each store, or between every pair of towns in a list. Computed by Valhalla on the TerraLab server from the OpenStreetMap road network, with each road's typical speed. Returns one row per origin and destination pair (distance_km, duration_min; null with status no_route when no road links them, or not_computed when the routing engine did not answer in time: ask those pairs again), a map of the places and CSV, GeoJSON, KML or Shapefile downloads with a straight line per pair. At most 25 different place names per call, and at most 25 pairs farther apart than 400 km by car (200 km on foot or by bike) in a straight line. For the line along the roads of one trip use get_route. Not for live traffic, a departure time or public transport. Never use the user's current location unless they type it. Download links build their file when opened; no file is saved. The user opens the file in QGIS or any GIS: this server cannot load it into the user's own QGIS or any app on their computer. Never pass these links to open_gis_file: list every format the user needs in formats, in this one call.