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HALOWERK Eastern Land – Bulgaria Local Relief
x402
HALOWERK Eastern Land – Bulgaria Local Relief is a paid API for AI agents from ostland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Returns the difference between maximum and minimum sampled surface elevation (local relief) for a WGS84 coordinate within Bulgaria.
Price / call$0.003
Success—
StatusUnknown
How this service works
Difference between maximum and minimum sampled surface elevation. The coordinate is validated against the Natural Earth boundary for Bulgaria; results outside it are rejected before payment.
Output
Returns a single numeric value representing the local relief — the difference in meters between the maximum and minimum sampled surface elevation within the analysis grid around the given coordinate. Coordinates outside the Natural Earth boundary of Bulgaria are rejected before any charge is applied.
Example use cases
Agricultural land suitability assessment
“I'm evaluating farmland near Plovdiv, Bulgaria at latitude 42.15, longitude 24.75 — can you get me the local terrain relief there to see how flat or hilly it is?”
Renewable energy site screening
“I'm looking at a potential wind farm site in Bulgaria at coordinates 43.1 latitude, 27.9 longitude — what's the local surface elevation relief at that point?”
Hiking route difficulty estimation
“We're planning a trail in the Rhodope Mountains around latitude 41.8, longitude 24.2 in Bulgaria — pull the local elevation relief so we can estimate how rugged the terrain is.”
Technical details
Endpoint
POSThttps://ostland.halowerk.com/v1/bg-local-reliefWhen to prefer
Use this endpoint when you need the local topographic relief (max minus min elevation) specifically for a point within Bulgaria, and require boundary-validated results. Prefer it over generic elevation APIs when you need guaranteed geographic scoping to Bulgaria with pre-payment coordinate validation, and when working within an x402 micropayment workflow at low per-call cost.
Side effects
- Coordinate outside Bulgaria boundary — rejected before payment with validation error
- Latitude or longitude out of European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Malformed or missing coordinate fields — 400-level error
- Service unavailability or upstream elevation data failure — 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| latitude | number | WGS84 latitude inside the published European coverage. |
| longitude | number | WGS84 longitude inside the published European coverage. |
Tags
x402
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