# HALOWERK Central Land – Slovakia Aspect Direction

> HALOWERK Central Land – Slovakia Aspect Direction 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 the circular direction (in degrees, clockwise from north) of the dominant surface gradient for a given coordinate within Slovakia, derived from Copernicus DEM data.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/sk-aspect
- 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-aspect-direction-85698989
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vP73tRYhfZOMF1rlG-nRT

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-aspect-direction-85698989 -d '<json body>'
```

Example prompt: What direction does the slope face at latitude 48.85, longitude 19.45 in Slovakia — give me the aspect angle clockwise from north.

## When to prefer this

Use this endpoint when you specifically need the aspect (slope-facing direction) for a point in Slovakia derived from Copernicus DEM GLO-30 data. It is preferable when you need Slovakia-specific boundary validation before incurring cost, and when aspect is the primary terrain attribute needed (as opposed to elevation, slope magnitude, or land cover class, which are separate sibling endpoints).

## Known failure modes

- Coordinate outside Slovakia boundary: request rejected with an error before payment is processed
- Coordinate within European bounding box but outside Slovakia polygon: validation failure returned
- Flat terrain with no dominant gradient may yield undefined or unreliable aspect
- Malformed or out-of-range latitude/longitude values return a validation error
- Network or service timeout

## How this service works

Circular direction of the dominant surface gradient, clockwise from north. The coordinate is validated against the Natural Earth boundary for Slovakia; results outside it are rejected before payment.

## Output

A numeric value representing the circular aspect direction in degrees (0–360, clockwise from north) of the dominant surface gradient at the queried coordinate. 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-aspect-direction-85698989/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)