# HALOWERK Southern Land – Italy Terrain Ruggedness (Elevation Std Dev)

> HALOWERK Southern Land – Italy Terrain Ruggedness (Elevation Std Dev) is a paid API for AI agents from suedland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns the standard deviation of sampled surface elevations for a given coordinate within Italy, quantifying terrain ruggedness at that location.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/it-ruggedness
- 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-southern-land-italy-terrain-ruggedness-elevation-std-dev-95ec8aab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sv6bW0SewgUruwqtyCUEQ

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-southern-land-italy-terrain-ruggedness-elevation-std-dev-95ec8aab -d '<json body>'
```

Example prompt: What's the terrain ruggedness at latitude 44.5, longitude 11.3 in Italy — can you get me the elevation standard deviation for that spot?

## When to prefer this

Choose this endpoint when you need a quantitative measure of terrain roughness or variability (elevation standard deviation) for a specific point within Italy. It is ideal for land assessment, agricultural planning, infrastructure routing, or ecological analysis workflows that require topographic complexity data. Use it over generic elevation APIs when you specifically need variability rather than a single elevation value, and when your target area is confirmed to be within Italy.

## Known failure modes

- Coordinate outside Italy boundary: request rejected before payment, likely returning a 4xx validation error
- Coordinate within European coverage bounds but outside Italy: rejected by Natural Earth boundary validation
- Malformed or out-of-range lat/lon values: schema validation error
- Payment failure via x402 protocol: call not executed
- Unavailable elevation data for sparse or edge-case coordinates: potential null or error response

## How this service works

Standard deviation of sampled surface elevations. The coordinate is validated against the Natural Earth boundary for Italy; results outside it are rejected before payment.

## Output

A numeric value representing the standard deviation of sampled surface elevations at the given coordinate, expressed in meters. Higher values indicate more rugged, variable terrain; lower values indicate flatter terrain. The coordinate must fall within the Natural Earth boundary of Italy or the request is rejected.

## 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-southern-land-italy-terrain-ruggedness-elevation-std-dev-95ec8aab/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from suedland.halowerk.com](https://www.zero.xyz/host/suedland.halowerk.com/llms.txt)