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Initial Bearing Calculator
x402
Initial Bearing Calculator is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).
Computes the initial compass bearing (in degrees) from one geographic coordinate to another using geodesic geometry.
Price / call$0.001
Success—
StatusUnknown
How this service works
Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.
Output
Returns a JSON object with a single 'degrees' field containing the initial bearing as a numeric value between 0 and 360, representing the compass angle from the first coordinate to the second (e.g. {"degrees": 90}).
Example use cases
Flight path heading calculation
“What's the initial bearing I'd need to fly from Los Angeles (lat 34.0522, lon -118.2437) to Tokyo (lat 35.6762, lon 139.6503)?”
Maritime navigation course setting
“I'm departing from Miami at latitude 25.7617, longitude -80.1918 and heading to Nassau at latitude 25.0480, longitude -77.3554 — what's my initial compass bearing?”
Drone waypoint direction check
“My drone starts at lat 51.5074, lon -0.1278 and needs to reach lat 48.8566, lon 2.3522 — what initial bearing should it fly?”
Technical details
Endpoint
POSThttps://x402-agent.kariguetoazul.workers.dev/api/geometry/initial-bearing?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, cheap ($0.001 USDC) programmatic computation of the initial geodesic bearing between two decimal-degree coordinates and don't want to implement the haversine/bearing formula yourself. Ideal for navigation apps, drone routing, logistics, or any agent workflow requiring directional heading as part of a larger geospatial pipeline.
Side effects
- Missing or out-of-range latitude/longitude values (lat outside -90 to 90, lon outside -180 to 180) will likely result in a validation error
- Identical start and end coordinates may return undefined or 0 bearing
- Payment failure or insufficient USDC balance may block the request via x402 protocol
- Server-side Cloudflare Worker cold start or quota exhaustion may cause timeout or 402/503 responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| lat1 | number | Latitude in decimal degrees. |
| lat2 | number | Latitude in decimal degrees. |
| lon1 | number | Longitude in decimal degrees. |
| lon2 | number | Longitude in decimal degrees. |
Output
Schema · Response
{
"type": "json",
"example": {
"degrees": 90
}
}Tags
x402
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