# HALOWERK Atlantic Land – Netherlands Elevation Lookup

> HALOWERK Atlantic Land – Netherlands Elevation Lookup is a paid API for AI agents from atlantikland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns bilinear-interpolated surface elevation from Copernicus DEM GLO-30 for a WGS84 coordinate within the Netherlands boundary.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/nl-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-atlantic-land-netherlands-elevation-lookup-783e3cb3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KI1KbeLyXzxEPLwhtROXJ

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-atlantic-land-netherlands-elevation-lookup-783e3cb3 -d '<json body>'
```

Example prompt: What is the surface elevation at latitude 52.3676, longitude 4.9041 in the Netherlands according to the Copernicus DEM GLO-30?

## When to prefer this

Choose this endpoint when you need a single high-resolution (30 m) surface elevation value for a specific point within the Netherlands, backed by the authoritative Copernicus GLO-30 dataset. It is ideal for per-coordinate enrichment in geospatial pipelines, flood modelling, construction planning, or route analysis where Netherlands-only coverage is sufficient. Prefer it over global DEM APIs when you want Netherlands boundary pre-validation built in and a pay-per-call micropayment model with no subscription overhead.

## Known failure modes

- Coordinate outside Netherlands boundary — 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 failure
- Malformed or missing latitude/longitude fields — request rejected with input validation error
- Network or service timeout — no elevation returned
- Payment failure (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 Netherlands; results outside it are rejected before payment.

## Output

A bilinear-interpolated elevation value (in metres) derived from the Copernicus DEM GLO-30 raster for the submitted WGS84 coordinate. The response is returned only if the coordinate passes validation against the Natural Earth boundary polygon for the Netherlands; coordinates outside that boundary are rejected before any charge is made.

## 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-atlantic-land-netherlands-elevation-lookup-783e3cb3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from atlantikland.halowerk.com](https://www.zero.xyz/host/atlantikland.halowerk.com/llms.txt)