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HALOWERK Europe Land – Bilinear Surface Elevation (Polygon)
x402
HALOWERK Europe Land – Bilinear Surface Elevation (Polygon) is a paid API for AI agents from euroland.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-13).
Returns bilinear-interpolated surface elevation statistics from Copernicus DEM GLO-30 for a user-supplied WGS84 polygon across 30 European countries.
Price / call$0.006
Success—
StatusUnknown
How this service works
Bilinear surface elevation from Copernicus DEM GLO-30. The service evaluates the bounded polygon supplied by the caller and returns standardized units across all 30 covered countries.
Output
A standardized elevation value (in metres) derived via bilinear interpolation from Copernicus DEM GLO-30 for the area enclosed by the submitted polygon. The response reflects the surface elevation across the parcel geometry.
Example use cases
Farm parcel elevation assessment
“I need the surface elevation for a farmland parcel in the Netherlands — the boundary points are [5.10, 52.10], [5.12, 52.10], [5.12, 52.12], [5.10, 52.12]. Can you get that from the Copernicus DEM?”
Construction site terrain height check
“We're planning a building project near Munich. Can you look up the elevation from the Copernicus GLO-30 dataset for this site polygon: [11.57, 48.13], [11.59, 48.13], [11.59, 48.14], [11.57, 48.14]?”
Renewable energy site suitability screening
“I'm evaluating a wind farm location in southern Spain and need the surface elevation for this land area — polygon vertices are [-3.70, 37.20], [-3.68, 37.20], [-3.68, 37.22], [-3.70, 37.22].”
Technical details
Endpoint
POSThttps://euroland.halowerk.com/v1/europe-elevation-parcelWhen to prefer
Choose this endpoint when you need Copernicus GLO-30 bilinear elevation for a specific polygon boundary in Europe (up to 0.25° span) rather than a circular buffer or point lookup. It is the right choice for parcel-level, property, or site-boundary elevation queries across the 30 supported European countries where standardized DEM data is required.
Side effects
- Polygon outside the 30 covered European countries — service returns an error or no data
- Polygon span exceeds 0.25 degrees — request rejected
- Fewer than 3 coordinate pairs supplied — invalid polygon error
- Coordinates outside WGS84 bounds (lon -31.5 to 40.5, lat 34 to 72.5) — out-of-range error
- Payment not processed — x402 payment required response
- Malformed coordinate array — schema validation failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| polygon | array | WGS84 polygon ring. The closing coordinate is optional; maximum span is 0.25 degrees. |
Tags
x402
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