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HALOWERK Europe Land – Water & Wetland Share (Polygon)
x402
HALOWERK Europe Land – Water & Wetland Share (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 the combined share of permanent water, herbaceous wetland, and mangrove land cover classes within a user-defined polygon across 30 European countries, derived from ESA WorldCover 2021.
Price / call$0.006
Success—
StatusUnknown
How this service works
Combined share of permanent water, herbaceous wetland and mangrove classes. The service evaluates the bounded polygon supplied by the caller and returns standardized units across all 30 covered countries.
Output
A standardized value (fraction or percentage) representing the combined share of ESA WorldCover 2021 pixels classified as permanent water, herbaceous wetland, or mangrove within the supplied polygon, aggregated across the analysis area and returned in standardized units.
Example use cases
Wetland compliance check for development site
“I need to know what percentage of this proposed construction site in Belgium is classified as wetland or permanent water — the polygon vertices are [4.30, 50.85], [4.32, 50.85], [4.32, 50.87], [4.30, 50.87]. We need this for an environmental impact assessment.”
Agricultural parcel water risk screening
“Can you check how much of this farmland parcel in Poland is covered by water or wetland? The boundary points are [18.50, 52.10], [18.52, 52.10], [18.52, 52.12], [18.50, 52.12]. I'm evaluating flood and drainage risk before purchase.”
Nature reserve wetland fraction reporting
“I'm preparing a habitat report for a nature reserve in Sweden and need the combined water and wetland share within this polygon: [17.90, 59.30], [17.93, 59.30], [17.93, 59.33], [17.90, 59.33].”
Technical details
Endpoint
POSThttps://euroland.halowerk.com/v1/europe-water-wetland-share-parcelWhen to prefer
Choose this endpoint when you need to quantify the water and wetland land cover fraction for a specific user-defined polygon in Europe, particularly for environmental compliance, land use assessment, or site screening workflows. Prefer it over raster tile services when you need a pre-aggregated scalar metric rather than raw pixel data, and over circular buffer endpoints when the area of interest has an irregular or parcel-specific boundary.
Side effects
- Polygon outside supported 30-country European coverage area returns an error or null result
- Polygon spanning more than 0.25 degrees in any direction is rejected as exceeding maximum span
- Fewer than 3 coordinate pairs provided fails validation (minimum polygon requirement)
- Coordinates provided in wrong order (lat/lon swapped) may return incorrect or out-of-range results
- Malformed polygon ring (non-closed or self-intersecting) may cause a processing error
- Payment not included or insufficient USDC results in 402 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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