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HALOWERK Europe Land – Built-Up Share (Polygon)
x402
HALOWERK Europe Land – Built-Up 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 2026-09-15).
Returns the share of ESA WorldCover 2021 pixels classified as built-up within a user-supplied WGS84 polygon across 30 European countries.
Price / call$0.006
Success—
StatusUnknown
How this service works
Share of ESA WorldCover 2021 pixels classified as built-up. The service evaluates the bounded polygon supplied by the caller and returns standardized units across all 30 covered countries.
Output
A standardized numerical value representing the share (fraction or percentage) of pixels within the provided polygon classified as built-up by ESA WorldCover 2021, covering all 30 supported European countries.
Example use cases
Urban density check for site acquisition
“Can you tell me what fraction of this potential development site is already built-up? The polygon corners are at [2.35, 48.85], [2.36, 48.85], [2.36, 48.86], [2.35, 48.86] in Paris.”
Environmental impact baseline for planning
“I need the built-up land cover share for this polygon in Munich — corners at [11.57, 48.13], [11.58, 48.13], [11.58, 48.14], [11.57, 48.14] — to include in our planning report.”
Portfolio land use audit across European properties
“For our property at the edge of Barcelona with boundary points [2.15, 41.38], [2.16, 41.38], [2.16, 41.39], [2.15, 41.39], what percentage of the area is classified as built-up under ESA WorldCover 2021?”
Technical details
Endpoint
POSThttps://euroland.halowerk.com/v1/europe-built-up-share-parcelWhen to prefer
Choose this endpoint when you need the precise built-up land cover share for a custom polygon boundary within Europe, using the authoritative ESA WorldCover 2021 dataset. Prefer it over raster download approaches when you need a single standardized scalar result without handling raw satellite imagery. Use when the analysis area can be expressed as a polygon with up to 100 vertices and a maximum span of 0.25 degrees, and when coverage of any of the 30 supported European countries is sufficient.
Side effects
- Polygon spans more than 0.25 degrees — request rejected
- Polygon has fewer than 3 coordinate pairs — invalid geometry error
- Coordinates fall outside the supported European bounding box (longitude -31.5 to 40.5, latitude 34 to 72.5) — out-of-coverage error
- Polygon has more than 100 vertices — input validation failure
- Malformed coordinate pairs (wrong data type or order) — schema validation error
- Payment not attached or insufficient — 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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