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POST
/
v1
/
routing
/
isochrone
curl --request POST \
  --url https://api.footstep.ai/v1/routing/isochrone \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "locations": [
    {
      "lat": 51.5322,
      "lon": -0.124
    }
  ],
  "travel": "pedestrian",
  "contours": [
    {
      "time": 5,
      "color": "ff0000"
    },
    {
      "time": 10,
      "color": "ffff00"
    },
    {
      "time": 15,
      "color": "00ff00"
    }
  ]
}
'
{
  "origin": {
    "lat": 0,
    "lon": 0
  },
  "travel": "<string>",
  "contours": [
    {
      "value": 123,
      "geometry": {
        "coordinates": "<unknown>"
      },
      "reachable_places": [
        {
          "name": "<string>",
          "label": "<string>",
          "place_type": "<string>",
          "coordinates": {
            "lat": 123,
            "lng": 123
          }
        }
      ]
    }
  ]
}

Documentation Index

Fetch the complete documentation index at: https://docs.footstep.ai/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
x-api-key
string
header
required

Your Footstep API key

Body

application/json
​
contours
object[]
required
Required array length: 1 - 4 elements
​
locations
object[]

Single origin location as coordinates (length 1). Use this when you already have lat/lon; otherwise prefer from.

Required array length: 1 element
​
travel
enum<string>
default:pedestrian
Available options:
auto,
bicycle,
pedestrian,
bus,
truck
​
travel_options
object

Fine-tuning options. Include only the key matching your travel type.

​
polygons
boolean
default:true
​
denoise
number
default:0.5

0 = detailed, 1 = smoothed

Required range: 0 <= x <= 1
​
show_locations
boolean
default:false
​
format
enum<string>
default:footstep

Response format. footstep = optimised for app developers (encoded polyline, flat structure). geojson = standard GeoJSON FeatureCollection (decoded coordinates, immediately usable in Leaflet/Mapbox GL/deck.gl).

Available options:
footstep,
geojson
​
from
string

Origin place name (e.g. 'Kings Cross, London'). Geocoded internally. Provide either from OR locations, not both.

Response

Isochrone contours

Structured isochrone response with typed contours

​
origin
object
required
​
travel
string
required

Travel type used

​
contours
object[]
required