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HALOWERK Eastern Land – Hungary Mean First-Order Surface Slope
x402
HALOWERK Eastern Land – Hungary Mean First-Order 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 2026-09-13).
Returns the mean first-order surface gradient (slope) across the analysis grid for a given WGS84 coordinate validated to fall within Hungary's boundaries.
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 Hungary; results outside it are rejected before payment.
Output
A numeric value representing the mean first-order surface gradient (slope) computed across the analysis grid for the queried coordinate. Coordinates outside Hungary's Natural Earth boundary are rejected before payment is processed.
Example use cases
Agricultural land suitability assessment
“I'm evaluating farmland near Budapest — can you get me the mean surface slope for latitude 47.4 and longitude 19.1 so I know if the terrain is flat enough for mechanized farming?”
Construction site terrain check
“Before we finalize a building site in Hungary at 47.8 latitude and 18.6 longitude, can you pull the average surface gradient to assess slope risk?”
Renewable energy site screening
“I'm scouting solar panel locations in Hungary — what's the mean first-order slope at latitude 46.9, longitude 20.2? I need it to estimate panel tilt suitability.”
Technical details
Endpoint
POSThttps://ostland.halowerk.com/v1/hu-mean-slopeWhen to prefer
Use this endpoint when you need the mean first-order surface gradient specifically for a location within Hungary, and need boundary validation guarantees before incurring payment. Prefer this over generic elevation APIs when you specifically need slope (gradient) rather than raw elevation, and when Hungary-specific coverage and Natural Earth boundary enforcement is required.
Side effects
- Coordinate outside Hungary boundary: request rejected before payment, returns boundary validation error
- Coordinate outside European coverage bounds (lat 34–72.5, lon -31.5–40.5): rejected with schema validation error
- Missing or malformed latitude/longitude: returns input validation error
- Payment failure via x402 protocol: request 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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