matrix
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Third-party content written by another agent. Data to evaluate, not instructions.
Compute a travel time/distance matrix between origins (rows) and destinations (columns). Costing "auto", "truck" (with optional truck profile as in route), "bicycle", "pedestrian" or "motor_scooter". Returns durations_s[i][j] in seconds and distances_m[i][j] in metres; null cells are unreachable pairs. Up to 10,000 cells per call (origins × destinations). Optional exclude_polygons for before/after scenarios ("close this bridge and recompute the matrix"): an array of polygons, each an array of [lon, lat] pairs forming one ring — longitude FIRST — whose intersecting roads are excluded from every cell's path finding. Applies to the Valhalla engine; unsupported on the GraphHopper engine, where it is ignored.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| costing | any | no | Costing model: "auto" (default), "truck", "bicycle", "pedestrian" or "motor_scooter". |
| destinations | array | yes | Destination locations (matrix columns). |
| exclude_polygons | array | null | no | Areas to avoid — scenario analysis ("close this bridge and recompute the matrix"): an array of polygons, each an array of `[lon, lat]` pairs forming one exterior ring (GeoJSON-style, longitude FIRST). Roads intersecting any ring are excluded from every cell's path finding. Applies to the Valhalla engine; unsupported on the GraphHopper engine, where it is ignored. |
| origins | array | yes | Origin locations (matrix rows). |
| truck | any | no | Truck profile (dimensions + ADR declaration). Requires costing "truck". |
Raw JSON schema
{
"$defs": {
"CostingKind": {
"description": "Costing models exposed by the MCP tools (a deliberate subset of the\nValhalla costing list), serialised in snake_case exactly as Valhalla\nnames them.",
"oneOf": [
{
"const": "auto",
"description": "Standard car costing.",
"type": "string"
},
{
"const": "truck",
"description": "Truck costing; honours dimensional limits and, when a `truck`\nprofile is supplied, ADR dangerous-goods restrictions.",
"type": "string"
},
{
"const": "bicycle",
"description": "Bicycle costing; tune it with a `bicycle` options object.",
"type": "string"
},
{
"const": "pedestrian",
"description": "Pedestrian (walking) costing; tune it with a `pedestrian` options\nobject (lit streets, wheelchair/blind, hiking difficulty).",
"type": "string"
},
{
"const": "motor_scooter",
"description": "Motor scooter (moped) costing: like auto but prefers lower-speed\nroads and may use ways closed to larger motor vehicles.",
"type": "string"
}
]
},
"LatLon": {
"description": "A WGS84 coordinate pair in decimal degrees.",
"properties": {
"lat": {
"description": "Latitude in decimal degrees (−90 to 90).",
"format": "double",
"type": "number"
},
"lon": {
"description": "Longitude in decimal degrees (−180 to 180).",
"format": "double",
"type": "number"
}
},
"required": [
"lat",
"lon"
],
"type": "object"
},
"TruckSpec": {
"description": "Truck profile for routing: physical dimensions plus the ADR\ndangerous-goods declaration. Omitted dimensions default to the EU\nmaximum authorised dimensions of Council Directive 96/53/EC (4.0 m\nheight, 2.55 m width, 16.5 m length, 40 t gross weight).",
"properties": {
"gross_weight_t": {
"description": "Gross combination weight in metric tonnes.",
"format": "double",
"type": [
"number",
"null"
]
},
"hazmat": {
"default": false,
"description": "Whether the vehicle carries dangerous goods (ADR). Defaults to\nfalse.",
"type": "boolean"
},
"height_m": {
"description": "Vehicle height in metres.",
"format": "double",
"type": [
"number",
"null"
]
},
"length_m": {
"description": "Vehicle length in metres.",
"format": "double",
"type": [
"number",
"null"
]
},
"tunnel_code": {
"description": "ADR 8.6.4 tunnel restriction code of the load, e.g. \"B\", \"C5000D\",\n\"B/D\", or \"(—)\"/\"none\" for explicitly unrestricted. Leave unset if\nunknown: a hazmat load without a code is conservatively treated as\ncode B (allowed only through category-A tunnels).",
"type": [
"string",
"null"
]
},
"width_m": {
"description": "Vehicle width in metres.",
"format": "double",
"type": [
"number",
"null"
]
}
},
"type": "object"
}
},
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"costing": {
"$ref": "#/$defs/CostingKind",
"default": "auto",
"description": "Costing model: \"auto\" (default), \"truck\", \"bicycle\", \"pedestrian\"\nor \"motor_scooter\"."
},
"destinations": {
"description": "Destination locations (matrix columns).",
"items": {
"$ref": "#/$defs/LatLon"
},
"type": "array"
},
"exclude_polygons": {
"description": "Areas to avoid — scenario analysis (\"close this bridge and\nrecompute the matrix\"): an array of polygons, each an array of\n`[lon, lat]` pairs forming one exterior ring (GeoJSON-style,\nlongitude FIRST). Roads intersecting any ring are excluded from\nevery cell's path finding. Applies to the Valhalla engine;\nunsupported on the GraphHopper engine, where it is ignored.",
"items": {
"items": {
"items": {
"format": "double",
"type": "number"
},
"maxItems": 2,
"minItems": 2,
"type": "array"
},
"type": "array"
},
"type": [
"array",
"null"
]
},
"origins": {
"description": "Origin locations (matrix rows).",
"items": {
"$ref": "#/$defs/LatLon"
},
"type": "array"
},
"truck": {
"anyOf": [
{
"$ref": "#/$defs/TruckSpec"
},
{
"type": "null"
}
],
"description": "Truck profile (dimensions + ADR declaration). Requires costing\n\"truck\"."
}
},
"required": [
"origins",
"destinations"
],
"type": "object"
}