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HALOWERK Eastern Land – Bulgaria Maximum Surface Slope
x402
HALOWERK Eastern Land – Bulgaria Maximum Surface Slope is a paid API for AI agents from ostland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Returns the maximum adjacent-cell surface gradient (steepest slope) across the analysis grid for a given coordinate within Bulgaria.
Price / call$0.003
Success—
StatusUnknown
How this service works
Maximum adjacent-cell surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Bulgaria; results outside it are rejected before payment.
Output
A numeric value representing the maximum adjacent-cell surface gradient (steepest slope) across the analysis grid centered on the requested Bulgarian coordinate. Returns an error if the coordinate falls outside the validated Natural Earth boundary for Bulgaria.
Example use cases
Agricultural land slope assessment
“Can you check the maximum surface slope at latitude 41.9, longitude 25.3 in Bulgaria? I'm evaluating whether the terrain is too steep for farming.”
Construction site terrain screening
“I need the steepest terrain gradient for the site at latitude 42.7, longitude 23.3 in Bulgaria before we decide on foundation type.”
Erosion risk mapping
“What's the maximum slope value at latitude 42.4, longitude 27.1 in Bulgaria? I'm building a runoff and erosion risk model for that area.”
Technical details
Endpoint
POSThttps://ostland.halowerk.com/v1/bg-max-slopeWhen to prefer
Use this endpoint when you need the single steepest slope metric (maximum adjacent-cell gradient) for a specific point within Bulgaria, particularly for terrain suitability analysis, construction screening, agricultural planning, or erosion risk assessment. Prefer it over generic elevation or DEM APIs when you specifically need maximum slope within Bulgaria and want built-in boundary validation.
Side effects
- Coordinate outside Bulgaria boundary — rejected before processing or payment
- Latitude or longitude out of European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Malformed JSON input — request error
- Payment failure — transaction not completed, no result returned
- Service unavailable — upstream elevation data unreachable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| latitude | number | WGS84 latitude inside the published European coverage. |
| longitude | number | WGS84 longitude inside the published European coverage. |
Tags
x402
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