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HALOWERK Baltic Land – Lithuania Mean First-Order Surface Gradient
x402
HALOWERK Baltic Land – Lithuania Mean First-Order Surface Gradient is a paid API for AI agents from baltikum.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).
Returns the mean first-order surface slope gradient across an analysis grid for a given coordinate within Lithuania, validated against the Natural Earth boundary.
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 Lithuania; results outside it are rejected before payment.
Output
A numeric value representing the mean first-order surface slope gradient across the analysis grid cell at the requested coordinate. Coordinates outside the Lithuanian boundary are rejected before payment is processed.
Example use cases
Agricultural land suitability assessment
“I'm evaluating farmland near Kaunas — can you get me the mean surface slope gradient at latitude 54.8985, longitude 23.9036 in Lithuania so I can assess how flat the terrain is for tillage?”
Infrastructure routing terrain check
“We're planning a road segment near Šiauliai — what's the mean first-order slope gradient at latitude 55.9349, longitude 23.3137 in Lithuania to understand how challenging the terrain is?”
Flood risk terrain profiling
“For a hydrological model covering wetlands near the Nemunas delta, can you fetch the mean surface slope gradient at latitude 55.2957, longitude 21.4036 in Lithuania?”
Technical details
Endpoint
POSThttps://baltikum.halowerk.com/v1/lt-mean-slopeWhen to prefer
Use this endpoint when you need the average slope steepness (first-order gradient) at a specific point within Lithuania and want boundary validation before incurring payment costs. Prefer this over maximum-slope or ruggedness endpoints when a smoothed, mean gradient is needed for land suitability, hydrology, or infrastructure planning rather than worst-case terrain values.
Side effects
- Coordinate outside Lithuania boundary — request rejected before payment, with a boundary validation error
- Coordinate outside European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation failure
- Missing or malformed latitude/longitude fields — input validation error
- Server-side computation failure for sparse elevation data — internal error response
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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