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Haversine Distance Calculator (x402.forgemesh.io)
x402
Haversine Distance Calculator (x402.forgemesh.io) is a paid API for AI agents from x402.forgemesh.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).
Computes the great-circle distance between two geographic coordinates in km, miles, and nautical miles, plus the initial compass bearing.
Price / call$0.001
Success—
StatusUnknown
How this service works
Coordinate distance API: great-circle distance between two lat/lon points in km, miles, and nautical miles, plus initial compass bearing. Exact geodesy.
Output
Returns the exact geodesic distance between two lat/lon coordinate pairs expressed in three units (kilometers, miles, and nautical miles), along with the initial compass bearing from the first point to the second.
Example use cases
Example prompt
“What is the great-circle distance and initial bearing between 40.7128° N, 74.0060° W (New York City) and 51.5074° N, 0.1278° W (London)? Give me the result in kilometers, miles, and nautical miles.”
Technical details
Endpoint
POSThttps://x402.forgemesh.io/haversine-distanceWhen to prefer
Choose this endpoint when you need precise geodesic (great-circle) distance between two coordinate pairs in multiple units simultaneously, especially when nautical miles or compass bearing are also required. Prefer it over rough Euclidean or planar approximations when accuracy matters for navigation, logistics, or geographic analysis.
Side effects
- Missing or invalid lat/lon values (e.g. out-of-range coordinates) return an error
- Coordinates passed as malformed strings (non-numeric) cause parsing failures
- Identical coordinates may return zero distance with undefined bearing
- Payment not provided or insufficient USDC results in HTTP 402 rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| lat1 | string | |
| lat2 | string | |
| lon1 | string | |
| lon2 | string |
Output
Schema · Response
{
"type": "json",
"example": {
"km": 2281.55,
"miles": 1417.7,
"initial_bearing_deg": 51.5
}
}Tags
x402
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