# HALOWERK Central Land – Austria Depression Depth

> HALOWERK Central Land – Austria 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 2026-09-15).

Returns the positive elevation difference (depression depth) between the neighborhood mean elevation and the center point elevation for a coordinate within Austria.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/at-depression-depth
- 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-central-land-austria-depression-depth-0f274f4f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dR4iboy-4vcEDq8fr84u0

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-austria-depression-depth-0f274f4f -d '<json body>'
```

Example prompt: What's the depression depth at latitude 47.8 and longitude 13.05 in Austria — I need to know how much lower that point is compared to its surrounding neighborhood elevation.

## When to prefer this

Use this endpoint when you specifically need the depression depth metric (positive difference between neighborhood mean and center elevation) for a point in Austria validated against Natural Earth boundaries. Prefer this over generic DEM or slope endpoints when you need to quantify how much a location sits in a topographic sink relative to its surroundings, such as for hydrology, drainage, or flood-risk analysis within Austria.

## Known failure modes

- Coordinate outside Austria boundary returns a validation error before any computation or payment
- Latitude or longitude out of the accepted European coverage range (lat 34–72.5, lon -31.5–40.5) is rejected at schema level
- Non-numeric or missing coordinate fields cause a bad request error
- Service unavailability returns a 5xx error with no elevation data

## How this service works

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

## Output

A numeric value representing the positive elevation difference (in meters) between the neighborhood mean surface elevation and the center point elevation — i.e. how much the queried point sits below its surrounding terrain. Coordinates outside Austria's Natural Earth boundary are rejected without returning a result.

## 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-austria-depression-depth-0f274f4f/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)