# HALOWERK Central Land – Liechtenstein Surface Elevation

> HALOWERK Central Land – Liechtenstein Surface Elevation 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 bilinear-interpolated surface elevation (meters) for a WGS84 coordinate within Liechtenstein, sourced from the Copernicus DEM GLO-30 dataset, rejecting coordinates outside the Liechtenstein boundary.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/li-elevation
- 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-liechtenstein-surface-elevation-7309d489
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v4zEsc1ICu6wn6FqsgpOf

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-liechtenstein-surface-elevation-7309d489 -d '<json body>'
```

Example prompt: What is the surface elevation at latitude 47.1415 and longitude 9.5215 in Liechtenstein? I need the Copernicus DEM GLO-30 bilinear elevation value in meters.

## When to prefer this

Use this endpoint when you specifically need Copernicus DEM GLO-30 surface elevation for a point within Liechtenstein with sub-meter precision via bilinear interpolation. Prefer it over generic elevation APIs when you need verified boundary-constrained results for Liechtenstein and when consistency with the broader HALOWERK Central Land land-analysis suite (soil, land cover, gradient) is required.

## Known failure modes

- Coordinate outside Liechtenstein boundary: request rejected before payment with a geographic validation error
- Coordinate outside the broader European coverage bounds (lat 34–72.5, lon -31.5–40.5): schema validation failure
- Malformed or missing latitude/longitude: input validation error
- Service unavailable or DEM data access error: 5xx response

## How this service works

Bilinear surface elevation from Copernicus DEM GLO-30. The coordinate is validated against the Natural Earth boundary for Liechtenstein; results outside it are rejected before payment.

## Output

A numeric surface elevation value in meters, derived by bilinear interpolation of the Copernicus DEM GLO-30 raster at the queried coordinate. Coordinates outside the Liechtenstein Natural Earth boundary are rejected before the call is processed.

## 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-liechtenstein-surface-elevation-7309d489/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)