# HALOWERK Central Land – Local Relief (Slovakia)

> HALOWERK Central Land – Local Relief (Slovakia) is a paid API for AI agents from mitteleuropa.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Returns the local relief value (max minus min sampled surface elevation) for a given coordinate within Slovakia using Copernicus DEM data.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/sk-local-relief
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-central-land-local-relief-slovakia-37039016
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_F1qrS8nEq9-jL_JFXux2A

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-local-relief-slovakia-37039016 -d '<json body>'
```

Example prompt: What's the local relief — the difference between the highest and lowest surface elevation — at latitude 48.7 and longitude 19.5 in Slovakia?

## When to prefer this

Use this endpoint when you need a scalar local relief metric (elevation range) for a specific point in Slovakia, particularly for terrain ruggedness assessment, land suitability analysis, or environmental modeling. It is Slovakia-specific with boundary validation before billing, making it safe for automated agent workflows. Prefer this over generic elevation endpoints when you need the relief (not raw elevation) and your area of interest is within Slovakia.

## Known failure modes

- Coordinates outside Slovakia's Natural Earth boundary return a validation error and no charge is applied
- Coordinates within the European bounding box but outside Slovakia are rejected
- Invalid latitude/longitude values (out of WGS84 range) return a schema validation error
- Network timeouts or upstream DEM data unavailability may return a service error

## How this service works

Difference between maximum and minimum sampled surface elevation. The coordinate is validated against the Natural Earth boundary for Slovakia; results outside it are rejected before payment.

## Output

A numeric value representing the local relief in meters — the difference between the maximum and minimum sampled surface elevation within the analysis neighborhood centered on the provided coordinate. Coordinates outside Slovakia's boundaries 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-local-relief-slovakia-37039016/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)