# HALOWERK Southern Land – Italy Depression Depth

> HALOWERK Southern Land – Italy Depression Depth is a paid API for AI agents from suedland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Returns the positive elevation difference between a neighborhood mean and the center cell elevation (depression depth) for a given coordinate in Italy.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/it-depression-depth
- 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-southern-land-italy-depression-depth-eb1a44d3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YBdS7_QbjuyfW8fFPnao_

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-depression-depth-eb1a44d3 -d '<json body>'
```

Example prompt: What's the terrain depression depth at latitude 41.9 and longitude 12.5 in Italy — I need to know how much lower that point is than its surrounding neighborhood elevation.

## When to prefer this

Use this endpoint when you need a precise terrain depression depth (neighborhood mean minus center elevation) for a specific coordinate within Italy. It is especially useful for agricultural planning, flood risk assessment, drainage analysis, or construction site evaluation where knowing whether a point sits in a topographic sink relative to its surroundings is critical. Prefer this over general elevation APIs when you need Italy-specific validated results with a depression-focused metric rather than raw elevation.

## Known failure modes

- Coordinate outside Italy's Natural Earth boundary — request rejected, no charge incurred
- Latitude or longitude outside published European coverage bounds (lat 34–72.5, lon -31.5–40.5) — validation error
- Missing required latitude or longitude parameters — schema validation failure
- Payment failure via x402 protocol — request not processed
- Point falls in area with no elevation data coverage — null or error response

## How this service works

Positive difference between the neighborhood mean and center elevation. The coordinate is validated against the Natural Earth boundary for Italy; results outside it are rejected before payment.

## Output

A numeric value representing the positive difference (in meters) between the neighborhood mean surface elevation and the center cell elevation at the queried coordinate, indicating terrain depression depth. Coordinates outside Italy's Natural Earth boundary are rejected before any charge is applied.

## 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-depression-depth-eb1a44d3/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)