# HALOWERK Central Land – Slovenia Depression Depth

> HALOWERK Central Land – Slovenia Depression Depth is a paid API for AI agents from mitteleuropa.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Returns the positive difference between the neighborhood mean elevation and the center point elevation (depression depth) for a coordinate in Slovenia, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/si-depression-depth
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-central-land-slovenia-depression-depth-f9d8ea0f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6-40ZOMS6Vdr07B1GZdVR

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-central-land-slovenia-depression-depth-f9d8ea0f -d '<json body>'
```

Example prompt: What's the depression depth — the positive difference between the surrounding mean elevation and the center — for the point at latitude 46.05, longitude 14.51 in Slovenia?

## When to prefer this

Choose this endpoint when you need terrain depression depth specifically for coordinates within Slovenia and require boundary validation before billing. It is ideal for hydrological, agricultural, or environmental analyses where knowing how much lower a point is relative to its surroundings is critical. Prefer this over generic DEM elevation endpoints when the depression metric (neighborhood mean minus center) is the specific quantity needed.

## Known failure modes

- Coordinate outside Slovenia Natural Earth boundary — request rejected, no charge applied
- Latitude or longitude out of the published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Invalid or missing coordinate fields — schema validation error
- Center elevation higher than neighborhood mean — likely returns zero or undefined (depression not applicable)
- Service unavailable or timeout — HTTP 5xx response

## How this service works

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

## Output

A numeric value representing the positive difference (in meters) between the neighborhood mean elevation and the center point elevation at the requested coordinate. Coordinates outside the Slovenia 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-central-land-slovenia-depression-depth-f9d8ea0f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mitteleuropa.halowerk.com](https://www.zero.xyz/host/mitteleuropa.halowerk.com/llms.txt)