# HALOWERK Central Land – Slovakia Solar Orientation Index

> HALOWERK Central Land – Slovakia Solar Orientation Index is a paid API for AI agents from mitteleuropa.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns a south-facing slope orientation index for a given coordinate in Slovakia, derived from terrain aspect and slope data.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/sk-solar-orientation
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-central-land-slovakia-solar-orientation-index-3b84ac30
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ytOuEb2ty2-uL3dq3T2D9

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability halowerk-central-land-slovakia-solar-orientation-index-3b84ac30 -d '<json body>'
```

Example prompt: What's the south-facing solar orientation index for the coordinate 48.7° N, 19.5° E in Slovakia? I want to know how suitable the slope is for capturing southern sunlight.

## When to prefer this

Choose this endpoint when you need a terrain-derived solar orientation index specifically for coordinates within Slovakia. It is distinct from a raw aspect or slope endpoint because it combines both into a single south-facing suitability score. Prefer this over generic DEM or aspect endpoints when the downstream use case is solar energy potential, vineyard siting, or south-facing land evaluation within Slovakia.

## Known failure modes

- Coordinate outside Slovakia's Natural Earth boundary — request rejected with validation error, no charge applied
- Latitude or longitude out of the accepted European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation failure
- Missing latitude or longitude field — bad request error
- Network timeout or service unavailability — HTTP 5xx response

## How this service works

South-facing slope orientation index derived from aspect and slope. The coordinate is validated against the Natural Earth boundary for Slovakia; results outside it are rejected before payment.

## Output

A numeric south-facing slope orientation index computed from the aspect and slope of the terrain at the given coordinate. Higher values indicate stronger southward-facing gradient, useful for solar energy potential assessment. Coordinates outside Slovakia's Natural Earth boundary are rejected before any charge is applied.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "latitude": {
   "type": "number",
   "maximum": 72.5,
   "minimum": 34,
   "description": "WGS84 latitude inside the published European coverage."
  },
  "longitude": {
   "type": "number",
   "maximum": 40.5,
   "minimum": -31.5,
   "description": "WGS84 longitude inside the published European coverage."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-central-land-slovakia-solar-orientation-index-3b84ac30/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mitteleuropa.halowerk.com](https://www.zero.xyz/host/mitteleuropa.halowerk.com/llms.txt)