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SiteCheck Distance Calculator
x402
SiteCheck Distance Calculator is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-19).
Calculates the straight-line (haversine) distance and bearing between two locations, accepting either coordinates or place names
Price / call$0.001
Success—
StatusUnknown
How this service works
The great-circle distance between two points in km and miles, the initial bearing and the midpoint. Each point is a lat,lon pair or a place name (geocoded with OpenStreetMap data, ODbL). Straight-line distance only, not a route.
Output
A JSON object containing: geocoded labels and coordinates for both the from and to locations, distance in kilometers and miles, initial bearing in degrees, midpoint latitude/longitude, the calculation method (haversine on a 6371 km sphere), and a timestamp of when the calculation was performed.
Example use cases
Shipping route distance estimate
“I need to know the straight-line distance in kilometers between Shanghai and Los Angeles — what's the haversine distance and the bearing from Shanghai heading toward LA?”
Travel planning distance check
“How far is it from Paris to Dubai? Give me the distance in miles and kilometers and the midpoint between them.”
Coordinate-based distance lookup
“Calculate the distance between coordinates 40.7128,-74.0060 and 51.5074,-0.1278, and tell me the bearing in degrees.”
Technical details
Endpoint
GEThttps://api.sitecheck-api.workers.dev/api/distance?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, pay-per-call great-circle (crow-flies) distance between any two points or named places without setting up a full mapping SDK. It is ideal when you need both distance units (km and miles), bearing, and midpoint in a single call, and when accepting place names as input (not just coordinates) is important.
Side effects
- Unrecognizable place name returns an error or null geocoding result from Nominatim
- Missing required 'from' or 'to' query parameters returns a validation error
- Ambiguous place names may resolve to unexpected locations (e.g. 'Springfield' without country context)
- Network timeout or Nominatim rate limit may cause geocoding failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"to": {
"lat": 41.006381,
"lon": 28.9758715,
"label": "İstanbul, Fatih, İstanbul, Marmara Bölgesi, 34122, Türkiye"
},
"from": {
"lat": 52.5173885,
"lon": 13.3951309,
"label": "Berlin, Deutschland"
},
"source": "haversine on a 6371 km sphere; place names from OpenStreetMap (Nominatim, ODbL)",
"midpoint": {
"lat": 47.02386,
"lon": 22.02567
},
"checkedAt": "2026-10-14T07:00:47.494Z",
"distanceKm": 1738.21,
"distanceMiles": 1080.07,
"initialBearingDeg": 131.2
}
}Tags
x402
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