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HALOWERK Europe Land – Drainage Tendency (Parcel)
x402
HALOWERK Europe Land – Drainage Tendency (Parcel) 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 relative runoff/drainage tendency of a user-defined land parcel in Europe, derived from terrain slope and ruggedness metrics, standardized across 30 European countries.
Price / call$0.006
Success—
StatusUnknown
How this service works
Relative runoff tendency derived from slope and ruggedness. The service evaluates the bounded polygon supplied by the caller and returns standardized units across all 30 covered countries.
Output
A standardized drainage tendency score derived from slope and ruggedness analysis of the input polygon, expressed in consistent units across all 30 covered European countries. The value indicates the relative likelihood of surface runoff versus water retention for the parcel.
Example use cases
Pre-purchase agricultural land assessment
“I'm looking at buying a 5-hectare field in northern France and want to know how prone it is to runoff and poor drainage — can you evaluate this polygon for me: [[2.31,49.10],[2.36,49.10],[2.36,49.13],[2.31,49.13]]?”
Flood risk site screening for developers
“We're scoping a development site in the Po Valley in Italy and need to understand its natural drainage tendency before commissioning a full survey — can you run the drainage analysis on this parcel: [[11.50,44.90],[11.54,44.90],[11.54,44.93],[11.50,44.93]]?”
Precision farming drainage planning
“I'm planning irrigation for a crop field in southern Poland and want to understand how water naturally runs off the terrain — please compute the drainage tendency for this field boundary: [[21.00,51.40],[21.04,51.40],[21.04,51.43],[21.00,51.43]].”
Technical details
Endpoint
POSThttps://euroland.halowerk.com/v1/europe-drainage-tendency-parcelWhen to prefer
Use this endpoint when you need slope- and ruggedness-derived runoff tendency for a specific bounded land parcel in Europe and require standardized, comparable values across countries. Prefer this over generic elevation APIs when you need a hydrology-relevant terrain metric rather than raw elevation, and over raster download services when you want a single computed score rather than pixel data.
Side effects
- Polygon exceeds maximum 0.25-degree span — returns validation error
- Polygon has fewer than 3 coordinate pairs — rejected as invalid geometry
- Coordinates fall outside Europe coverage bounds (lon -31.5 to 40.5, lat 34 to 72.5) — returns out-of-coverage error
- Malformed coordinate array or non-numeric values — returns schema validation error
- Payment not authorized or insufficient USDC balance — returns 402 Payment Required
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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