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HALOWERK Europe Land – Terrain Ruggedness (Polygon)
x402
HALOWERK Europe Land – Terrain Ruggedness (Polygon) is a paid API for AI agents from euroland.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-15).
Returns the standard deviation of sampled surface elevations within a user-defined polygon, quantifying terrain ruggedness across 30 European countries.
Price / call$0.006
Success—
StatusUnknown
How this service works
Standard deviation of sampled surface elevations. The service evaluates the bounded polygon supplied by the caller and returns standardized units across all 30 covered countries.
Output
A numeric value representing the standard deviation of surface elevations sampled within the supplied polygon, expressed in standardized units. This single ruggedness metric quantifies how variable (rough, hilly, or flat) the terrain is within the parcel, covering any location across 30 European countries.
Example use cases
Solar farm site suitability screening
“We're evaluating a parcel in the Loire Valley for a solar farm — the boundary corners are approximately [1.2, 47.5], [1.3, 47.5], [1.3, 47.55], [1.2, 47.55]. Can you check how rugged the terrain is so we know if it's worth pursuing?”
Agricultural land classification
“I need to know how variable the elevation is within this crop field in Poland — the field polygon runs through [20.1, 51.2], [20.2, 51.2], [20.2, 51.25], [20.1, 51.25]. Looking for a ruggedness score to help classify it for erosion risk.”
Real estate parcel terrain assessment
“We're looking at a plot of land near the Pyrenees with corners at [-1.5, 42.7], [-1.4, 42.7], [-1.4, 42.75], [-1.5, 42.75] — can you tell me the standard deviation of elevation across it so we understand how steep or flat the terrain is?”
Technical details
Endpoint
POSThttps://euroland.halowerk.com/v1/europe-ruggedness-parcelWhen to prefer
Choose this endpoint when you need a polygon-level terrain ruggedness metric for a specific land parcel in Europe, rather than a fixed-radius circular buffer analysis. It is ideal when you have precise parcel boundaries (e.g. cadastral polygons, field boundaries, or project footprints) and need elevation variability as a single standardized index. Prefer it over circular-buffer siblings when the area of interest is irregularly shaped or when parcel geometry fidelity matters.
Side effects
- Polygon spans more than 0.25 degrees — request will be rejected; split into smaller parcels
- Fewer than 3 coordinate pairs provided — invalid polygon geometry error
- Coordinates outside supported European bounding box (lon -31.5 to 40.5, lat 34 to 72.5) — out-of-coverage error
- Polygon self-intersects or is malformed — geometry validation failure
- Payment not provided or insufficient USDC — x402 payment required response
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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