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HALOWERK Southern Land – Portugal Mean Surface Slope
x402
HALOWERK Southern Land – Portugal Mean Surface Slope is a paid API for AI agents from suedland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Returns the mean first-order surface gradient (slope) across an analysis grid for a given coordinate within Portugal.
Price / call$0.003
Success—
StatusUnknown
How this service works
Mean first-order surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Portugal; results outside it are rejected before payment.
Output
A numeric value representing the mean first-order surface gradient (slope) across the analysis grid centered on the provided coordinate within Portugal. The coordinate is validated against Natural Earth boundaries for Portugal; if it falls outside, the request is rejected before payment is charged.
Example use cases
Agricultural land suitability in Alentejo
“Can you get me the mean terrain slope at latitude 38.5, longitude -7.9 in Portugal? I'm evaluating whether this plot in Alentejo is suitable for vineyards.”
Solar farm site selection
“I need the average surface gradient at coordinates 37.8 latitude, -8.3 longitude in Portugal — I'm assessing if the terrain is flat enough for a solar farm.”
Hiking trail slope assessment
“What's the mean slope of the terrain at latitude 41.1, longitude -7.6 in northern Portugal? I'm planning a hiking route and need to know how steep the area is.”
Technical details
Endpoint
POSThttps://suedland.halowerk.com/v1/pt-mean-slopeWhen to prefer
Use this endpoint when you need a precise mean surface slope value for a specific geographic coordinate within Portugal. It is ideal for land use planning, agricultural suitability analysis, civil engineering site assessment, environmental modeling, or any workflow that requires terrain steepness data for Portuguese locations. It is preferable over general-purpose elevation APIs when you specifically need a slope gradient metric (not raw elevation) and the location is in Portugal.
Side effects
- Coordinate outside Portugal boundary — request rejected before payment, no charge incurred
- Latitude or longitude outside the declared European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation failure
- Invalid or missing coordinate fields — 400-level error returned
- Network or service unavailability — timeout or 5xx error
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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