# HALOWERK Central Land – Czechia Local Relief (Elevation Range)

> HALOWERK Central Land – Czechia Local Relief (Elevation Range) 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 difference between maximum and minimum sampled surface elevation (local relief) for a given WGS84 coordinate within Czechia.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/cz-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-czechia-local-relief-elevation-range-ade541ae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lCjMtG3u90HudnAfXl1so

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-czechia-local-relief-elevation-range-ade541ae -d '<json body>'
```

Example prompt: What's the local relief — the elevation range between the highest and lowest surface points — at latitude 50.0755 and longitude 14.4378 in Czechia?

## When to prefer this

Choose this endpoint when you need a quick, pay-per-call local terrain relief metric for a specific point within Czechia, particularly when you want a pre-validated, boundary-checked result without managing raw DEM data. It complements sibling endpoints on the same platform for slope, aspect, and land cover if a fuller terrain profile is needed.

## Known failure modes

- Coordinate outside Czechia boundary: request rejected with validation error before payment
- Latitude or longitude outside European coverage range (lat 34–72.5, lon -31.5–40.5): rejected by schema validation
- Malformed or missing coordinate fields: schema validation error
- Elevation data unavailable for the queried point: service error response
- Network timeout or upstream DEM source unavailability

## How this service works

Difference between maximum and minimum sampled surface elevation. The coordinate is validated against the Natural Earth boundary for Czechia; 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 elevations within the analysis neighborhood around the given coordinate. Coordinates outside the Czechia boundary defined by Natural Earth are rejected before any charge is incurred.

## 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-czechia-local-relief-elevation-range-ade541ae/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)