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HALOWERK Europe Land – Depression Depth (Parcel)
x402
HALOWERK Europe Land – Depression Depth (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 positive elevation difference between the neighborhood mean and the center point (depression depth) for a user-supplied WGS84 polygon parcel across 30 European countries.
Price / call$0.006
Success—
StatusUnknown
How this service works
Positive difference between the neighborhood mean and center elevation. The service evaluates the bounded polygon supplied by the caller and returns standardized units across all 30 covered countries.
Output
A standardized numeric value representing the positive elevation difference between the neighborhood mean elevation and the center elevation of the supplied polygon, expressed in consistent units across all 30 covered European countries. A higher value indicates the parcel center is significantly lower than its surroundings (a deeper depression or sink).
Example use cases
Flood risk screening for farmland
“I need to assess whether this farm parcel in the Netherlands is at risk of water pooling — can you compute the depression depth for the polygon with vertices at [4.85, 52.35], [4.86, 52.35], [4.86, 52.36], [4.85, 52.36]? I want to see how much the center sits below the surrounding terrain.”
Site suitability for solar installation
“We're evaluating a site in southern Spain for a solar farm. Can you check the depression depth for the area bounded by [-3.10, 37.90], [-3.09, 37.90], [-3.09, 37.91], [-3.10, 37.91] to see if there are any significant sink features that might cause drainage issues?”
Urban drainage planning in Poland
“Our city planning team needs to understand local topographic depressions for a proposed district in Warsaw. Please compute the depression depth for the parcel polygon: [21.01, 52.22], [21.02, 52.22], [21.02, 52.23], [21.01, 52.23].”
Technical details
Endpoint
POSThttps://euroland.halowerk.com/v1/europe-depression-depth-parcelWhen to prefer
Choose this endpoint when you need a parcel-level depression depth metric (center vs. neighborhood elevation difference) for a specific user-defined polygon in Europe and want standardized output across 30 countries. Prefer this over circular-buffer siblings when the exact parcel boundary matters (e.g. cadastral parcels, field boundaries). Use it for flood risk, drainage assessment, site suitability, or any analysis where terrain concavity at the parcel level is relevant.
Side effects
- Polygon has fewer than 3 vertices — validation error returned
- Polygon spans more than 0.25 degrees — rejected as exceeding maximum allowed extent
- Coordinates fall outside the covered European extent (longitude -31.5 to 40.5, latitude 34 to 72.5) — no data returned
- Malformed coordinate pairs (wrong order or missing values) — schema validation failure
- Polygon describes a non-closed self-intersecting ring — processing error
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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