# HALOWERK Atlantic Land – Netherlands Local Relief (Elevation Range)

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

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/nl-local-relief
- 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-local-relief-elevation-range-53b31e14
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_O03C0822tjaON0ncbUAgg

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-local-relief-elevation-range-53b31e14 -d '<json body>'
```

Example prompt: What's the local relief — the difference between the highest and lowest terrain elevation — at latitude 52.37 and longitude 4.89 in the Netherlands?

## When to prefer this

Choose this endpoint when you need the local relief (elevation range) specifically for a point within the Netherlands. It is purpose-built for Dutch coordinates with pre-payment boundary validation, making it cost-efficient — invalid coordinates are rejected before the fee is charged. Prefer this over generic elevation APIs when you need the max-minus-min relief metric rather than a single elevation value, and when your workflow targets the Netherlands specifically.

## Known failure modes

- Coordinate outside Netherlands boundary — request rejected before payment, returns validation error
- Coordinate within European coverage bounds but outside Netherlands Natural Earth boundary — rejected
- Malformed or out-of-range latitude/longitude values — schema validation error
- Network or service timeout — transient error, retry recommended
- Payment failure via x402 protocol — call not executed

## How this service works

Difference between maximum and minimum sampled surface elevation. The coordinate is validated against the Natural Earth boundary for Netherlands; results outside it are rejected before payment.

## Output

A numeric value representing the local relief in metres — the difference between the maximum and minimum sampled surface elevation across the analysis grid centred on the submitted coordinate. The coordinate must fall within the Netherlands boundary; requests outside that boundary are rejected before 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-atlantic-land-netherlands-local-relief-elevation-range-53b31e14/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)