# HALOWERK Europe Land – Depression Depth Buffer 1000m

> HALOWERK Europe Land – Depression Depth Buffer 1000m 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 positive elevation difference between the 1,000-metre circular neighborhood mean and the center point elevation, measuring how much lower a location sits relative to its surroundings across 30 European countries.

## Facts

- Endpoint: POST https://euroland.halowerk.com/v1/europe-depression-depth-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-depression-depth-buffer-1000m-7368c1e8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_v4sT1KZDx4kB3Fdd-eUvb

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-depression-depth-buffer-1000m-7368c1e8 -d '<json body>'
```

Example prompt: What is the depression depth for the 1,000-metre neighborhood around latitude 48.8566, longitude 2.3522 — I need to know how much lower that point sits compared to its surroundings?

## When to prefer this

Use this endpoint when you need a terrain depression metric for a specific European coordinate using a 1,000-metre neighborhood radius. It is ideal for flood risk screening, land suitability analysis, infrastructure planning, or any application needing to quantify how much a point sits below its local surroundings. Prefer this over the 60m or 250m radius variants when broader neighborhood context (1km) is needed to smooth local terrain noise.

## Known failure modes

- Coordinates outside European coverage bounds (latitude 34–72.5, longitude -31.5–40.5) return an error or null result
- Coordinates in ocean or non-land areas may return no meaningful elevation delta
- Payment failure via x402 protocol prevents response
- Malformed or missing latitude/longitude parameters cause a 4xx validation error

## How this service works

Positive difference between the neighborhood mean and center elevation. 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 positive difference (in standardized units) between the mean elevation of the 1,000-metre circular neighborhood and the elevation at the center coordinate — indicating how much lower the queried point sits relative to its surroundings. A higher value indicates a deeper terrain depression or sink.

## 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-depression-depth-buffer-1000m-7368c1e8/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)