# HALOWERK Europe Land – Drainage Tendency (1,000 m Buffer)

> HALOWERK Europe Land – Drainage Tendency (1,000 m Buffer) 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 relative runoff/drainage tendency score for a 1,000-metre circular neighbourhood around a European coordinate, derived from terrain slope and ruggedness.

## Facts

- Endpoint: POST https://euroland.halowerk.com/v1/europe-drainage-tendency-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-drainage-tendency-1-000-m-buffer-b6c0a5d9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_G2fGQi06Z75FEmGYyOxWD

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-drainage-tendency-1-000-m-buffer-b6c0a5d9 -d '<json body>'
```

Example prompt: What's the drainage tendency score for the area within 1 kilometre of latitude 51.5 longitude -0.1 in Europe — I need the slope and ruggedness-based runoff index for that site.

## When to prefer this

Choose this endpoint when you need a terrain-derived hydrological drainage index at a specific European coordinate using a 1,000-metre neighbourhood — particularly when you need results standardized across multiple European countries for comparison. Prefer the 60-metre or polygon variants for finer local analysis or custom-shaped areas respectively.

## Known failure modes

- Coordinate outside European coverage bounds (latitude not in 34–72.5, longitude not in -31.5–40.5) returns an error
- Missing latitude or longitude parameter returns a validation error
- Coordinates that fall in a gap in terrain data coverage may return null or degraded output
- Network or service timeout for remote or complex terrain areas

## How this service works

Relative runoff tendency derived from slope and ruggedness. The service evaluates a circular 1,000 metre neighborhood around one coordinate and returns standardized units across all 30 covered countries.

## Output

A standardized drainage tendency score (relative runoff index) for the 1,000-metre circular area around the submitted coordinate, derived from terrain slope and ruggedness, expressed in consistent units comparable across all 30 covered European countries.

## 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-drainage-tendency-1-000-m-buffer-b6c0a5d9/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)