# HALOWERK Eastern Land – Cyprus Surface Elevation (Copernicus DEM GLO-30)

> HALOWERK Eastern Land – Cyprus Surface Elevation (Copernicus DEM GLO-30) is a paid API for AI agents from ostland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns bilinearly interpolated surface elevation in metres for a WGS84 coordinate within Cyprus, derived from the Copernicus DEM GLO-30 dataset.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/cy-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-eastern-land-cyprus-surface-elevation-copernicus-dem-glo-30-5c22130c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zanLPPufFW69ekQRrutrp

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-eastern-land-cyprus-surface-elevation-copernicus-dem-glo-30-5c22130c -d '<json body>'
```

Example prompt: What is the surface elevation at latitude 34.92, longitude 33.62 in Cyprus according to the Copernicus DEM GLO-30 data?

## When to prefer this

Choose this endpoint when you need precise, bilinearly interpolated surface elevation specifically within Cyprus and want data sourced from the high-quality Copernicus DEM GLO-30 (30 m resolution). It is ideal when boundary validation (automatic rejection of out-of-Cyprus coordinates) is important to avoid wasted charges. Prefer it over generic global elevation APIs when working on Cyprus-specific geospatial, civil engineering, agricultural, or environmental projects.

## Known failure modes

- Coordinate outside Cyprus Natural Earth boundary — request rejected before payment with a boundary validation error
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Malformed or missing latitude/longitude — 400 bad request
- Network or upstream DEM data unavailability — 503 service error

## How this service works

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

## Output

A numeric surface elevation value in metres derived from bilinear interpolation of the Copernicus DEM GLO-30 raster at the requested coordinate. Coordinates outside the Cyprus 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-eastern-land-cyprus-surface-elevation-copernicus-dem-glo-30-5c22130c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ostland.halowerk.com](https://www.zero.xyz/host/ostland.halowerk.com/llms.txt)