# HALOWERK Europe Land – Terrain Ruggedness (1,000 m Buffer)

> HALOWERK Europe Land – Terrain Ruggedness (1,000 m Buffer) is a paid API for AI agents from euroland.halowerk.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-15).

Returns the standard deviation of surface elevations sampled within a 1,000-metre circular neighbourhood around a given European coordinate, quantifying terrain ruggedness.

## Facts

- Endpoint: POST https://euroland.halowerk.com/v1/europe-ruggedness-buffer-1000m
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-europe-land-terrain-ruggedness-1-000-m-buffer-dc3ef495
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9n-kC90hrZJ03mV0VgxeD

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-terrain-ruggedness-1-000-m-buffer-dc3ef495 -d '<json body>'
```

Example prompt: What's the terrain ruggedness score for the area within 1 km of latitude 47.5, longitude 13.0 in Austria — I need the elevation standard deviation from HALOWERK's Europe Land service.

## When to prefer this

Choose this endpoint when you need a precise, circular 1,000-metre neighbourhood ruggedness score for a single point in Europe, particularly for site suitability analysis, environmental modelling, or land characterization workflows. Prefer it over smaller buffer variants (e.g. 60 m or 250 m) when you need a landscape-scale terrain variability measure rather than a localised one. It covers 30 European countries with consistent standardized units, making it suitable for cross-country comparisons.

## Known failure modes

- Coordinates outside European coverage bounds (latitude 34–72.5°N, longitude 31.5°W–40.5°E) return a validation error
- Missing or non-numeric latitude/longitude fields cause a 400-level error
- Payment failure via x402 protocol blocks the response
- Coordinates in ocean or non-covered regions may return null or an error
- Server-side data gaps for very remote areas may return incomplete results

## How this service works

Standard deviation of sampled surface elevations. The service evaluates a circular 1,000 metre neighborhood around one coordinate and returns standardized units across all 30 covered countries.

## Output

A numeric value representing the standard deviation of sampled surface elevations (in standardized units) within a 1,000-metre circular buffer around the supplied coordinate, covering any point within 30 European countries.

## 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-terrain-ruggedness-1-000-m-buffer-dc3ef495/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)