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HALOWERK Europe Land – Maximum Slope (Parcel Polygon)
x402
HALOWERK Europe Land – Maximum Slope (Parcel 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).
Computes the maximum adjacent-cell surface gradient (steepest slope) across a user-supplied WGS84 polygon parcel within Europe, returning a standardized value across 30 covered countries.
Price / call$0.006
Success—
StatusUnknown
How this service works
Maximum adjacent-cell surface gradient across the analysis grid. The service evaluates the bounded polygon supplied by the caller and returns standardized units across all 30 covered countries.
Output
A single standardized numeric value representing the maximum adjacent-cell surface gradient (steepest slope) found within the submitted polygon parcel, expressed in consistent units across all 30 covered European countries.
Example use cases
Pre-purchase land suitability check
“Before I buy this plot in Bavaria, can you check the maximum slope across the parcel? The boundary corners are [11.52, 48.10], [11.53, 48.10], [11.53, 48.11], [11.52, 48.11].”
Renewable energy site screening
“We're evaluating a field in southern Spain for a solar farm — can you tell me the steepest slope inside this polygon: [−4.20, 37.85], [−4.19, 37.85], [−4.19, 37.86], [−4.20, 37.86]? We need it to be relatively flat.”
Agricultural drainage planning
“For this farmland parcel in Poland with corners at [20.10, 52.20], [20.11, 52.20], [20.11, 52.21], [20.10, 52.21], what is the maximum terrain gradient so I can plan drainage infrastructure?”
Technical details
Endpoint
POSThttps://euroland.halowerk.com/v1/europe-max-slope-parcelWhen to prefer
Choose this endpoint when you need the steepest terrain gradient within an arbitrarily shaped land parcel (polygon) rather than a fixed-radius circular buffer or point sample. It is ideal for due-diligence workflows, construction feasibility, agricultural suitability, or renewable energy site assessment across any of the 30 covered European countries, and when you need a single worst-case slope value rather than a mean or distribution.
Side effects
- Polygon spans more than 0.25 degrees — request rejected with validation error
- Fewer than 3 coordinate pairs supplied — invalid polygon error
- Coordinates fall outside the European coverage extent (lon: −31.5 to 40.5, lat: 34 to 72.5) — out-of-coverage error
- Malformed coordinate array structure — schema validation error
- Network timeout or service unavailability — 5xx error 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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