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HALOWERK Central Land – Mean Surface Slope (Liechtenstein)
x402
HALOWERK Central Land – Mean Surface Slope (Liechtenstein) is a paid API for AI agents from mitteleuropa.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Returns the mean first-order surface gradient (slope) across an analysis grid cell for a given coordinate within Liechtenstein.
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 Liechtenstein; results outside it are rejected before payment.
Output
Returns the mean first-order surface gradient (slope) value computed across the analysis grid for the specified coordinate. Coordinates outside the Liechtenstein Natural Earth boundary are rejected before any charge is applied.
Example use cases
Agricultural land suitability assessment
“I'm evaluating a plot near Vaduz, Liechtenstein at latitude 47.13, longitude 9.51 — can you tell me the mean surface slope so I can judge whether it's suitable for cultivation?”
Construction site terrain analysis
“We're planning a building project at coordinates 47.16 latitude, 9.55 longitude in Liechtenstein. What's the average slope of the terrain there?”
Hiking trail difficulty profiling
“For a trail planning project in Liechtenstein, can you fetch the mean surface gradient at latitude 47.06, longitude 9.50 so we can estimate the steepness hikers will encounter?”
Technical details
Endpoint
POSThttps://mitteleuropa.halowerk.com/v1/li-mean-slopeWhen to prefer
Use this endpoint when you need a precise, paid-per-call mean terrain slope value specifically for a coordinate within Liechtenstein, sourced from high-resolution European DEM data. Prefer this over generic elevation APIs when first-order gradient (slope) rather than raw elevation is required, and when Liechtenstein boundary enforcement is needed for data quality.
Side effects
- Coordinate outside Liechtenstein boundary: request rejected with a boundary validation error before payment
- Latitude or longitude outside European coverage range (lat 34–72.5, lon -31.5–40.5): input validation failure
- Missing required latitude or longitude fields: request fails with schema validation error
- DEM data unavailable for the requested grid cell: returns an error indicating no data
- Payment failure via x402 protocol: call not processed
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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