# HALOWERK Europe Land – Local Relief (Point)

> HALOWERK Europe Land – Local Relief (Point) is a paid API for AI agents from euroland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Returns the local relief (difference between maximum and minimum surface elevation) within a 60-metre analysis grid around a given European coordinate.

## Facts

- Endpoint: POST https://euroland.halowerk.com/v1/europe-local-relief-point
- 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-europe-land-local-relief-point-4e8b8ce6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oNM1e4NRS17dUaYLg4g0z

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-europe-land-local-relief-point-4e8b8ce6 -d '<json body>'
```

Example prompt: What's the local relief — the difference between the highest and lowest surface elevation — within 60 metres of latitude 48.8566, longitude 2.3522 in Europe?

## When to prefer this

Choose this endpoint when you need a point-level local terrain roughness or relief metric within a 60-metre radius for any location across 30 European countries, particularly for site assessment, land-use analysis, or environmental characterization workflows where elevation variability at fine spatial scale matters.

## Known failure modes

- Coordinates outside European coverage bounds (lat 34–72.5, lon −31.5–40.5) return an error
- Missing or malformed latitude/longitude values cause a 400 Bad Request
- Payment not provided or insufficient USDC triggers a 402 Payment Required
- Temporary service unavailability returns a 5xx error

## How this service works

Difference between maximum and minimum sampled surface elevation. The service evaluates a 60 metre local analysis grid around one coordinate and returns standardized units across all 30 covered countries.

## Output

A numeric value representing the local relief in standardized units — the difference between the maximum and minimum sampled surface elevation within a 60-metre analysis grid centered on the provided coordinate. Coverage spans 30 European countries within the latitude range 34–72.5°N and longitude range −31.5–40.5°E.

## 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-europe-land-local-relief-point-4e8b8ce6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from euroland.halowerk.com](https://www.zero.xyz/host/euroland.halowerk.com/llms.txt)