# HALOWERK Nordic Land – Norway Surface Elevation (Copernicus DEM GLO-30)

> HALOWERK Nordic Land – Norway Surface Elevation (Copernicus DEM GLO-30) is a paid API for AI agents from nordland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Returns bilinearly interpolated surface elevation for a WGS84 coordinate inside Norway using the Copernicus DEM GLO-30 dataset, rejecting coordinates outside the Norwegian boundary before charging.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/no-elevation
- 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-nordic-land-norway-surface-elevation-copernicus-dem-glo-30-e6dba683
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ga7hfdJuOu75Clt3mvAZP

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-nordic-land-norway-surface-elevation-copernicus-dem-glo-30-e6dba683 -d '<json body>'
```

Example prompt: What is the surface elevation at latitude 59.9139, longitude 10.7522 — that's somewhere in Oslo, Norway — using the Copernicus DEM?

## When to prefer this

Choose this endpoint when you need a precise, bilinearly interpolated surface elevation for a single point known to be within Norway, backed by the high-resolution Copernicus DEM GLO-30 dataset. It is preferable over generic global elevation APIs when Norwegian boundary validation is required before payment, ensuring you are never charged for out-of-coverage queries. It is part of a family of Norwegian land-data endpoints (soil, slope, wetland cover) making it ideal for multi-variable Norwegian geospatial pipelines.

## Known failure modes

- Coordinate outside Norway boundary → rejected before payment, error indicating coordinate is out of coverage area
- Coordinate within the declared European input range (lat 34–72.5, lon -31.5–40.5) but outside Norway → boundary validation failure
- Malformed or missing latitude/longitude → input schema validation error
- Network or service unavailability → HTTP 5xx error
- Payment failure via x402 protocol → request not processed

## How this service works

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

## Output

The endpoint returns a bilinearly interpolated surface elevation value in meters derived from the Copernicus DEM GLO-30 raster for the queried coordinate. Coordinates outside the Natural Earth boundary for Norway are rejected before any payment 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-nordic-land-norway-surface-elevation-copernicus-dem-glo-30-e6dba683/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nordland.halowerk.com](https://www.zero.xyz/host/nordland.halowerk.com/llms.txt)