# HALOWERK Europe Land – Drainage Tendency Point

> HALOWERK Europe Land – Drainage Tendency Point is a paid API for AI agents from euroland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns a standardized relative runoff/drainage tendency score derived from terrain slope and ruggedness for a single WGS84 coordinate in Europe, evaluated over a 60-metre local analysis grid.

## Facts

- Endpoint: POST https://euroland.halowerk.com/v1/europe-drainage-tendency-point
- 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-europe-land-drainage-tendency-point-0f419631
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ikFs16K2dpAg5gs0zwBqG

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-point-0f419631 -d '<json body>'
```

Example prompt: What's the drainage tendency score for the point at latitude 48.85, longitude 2.35 in Europe — I need the slope-and-ruggedness-based runoff index from the HALOWERK Europe Land service?

## When to prefer this

Choose this endpoint when you need a fast, standardized terrain drainage tendency score for a single point in Europe based on slope and ruggedness, especially for land assessment, environmental screening, construction feasibility, or agricultural planning workflows. Prefer it over general GIS tools when you need a normalized, comparable metric across 30 European countries without running your own DEM analysis.

## Known failure modes

- Coordinates outside the European coverage bounds (lat 34–72.5, lon -31.5–40.5) will return an error or empty result
- Missing latitude or longitude parameters will cause a validation error
- Coordinates over open sea or non-land areas may return null or undefined values
- Payment failure (x402 protocol) will prevent the call from completing
- Precision issues with coordinates very close to coverage boundaries may produce edge-case results

## How this service works

Relative runoff tendency derived from slope and ruggedness. The service evaluates a 60 metre local analysis grid around one coordinate and returns standardized units across all 30 covered countries.

## Output

A standardized numerical score representing the relative drainage/runoff tendency at the queried point, derived from slope angle and terrain ruggedness within a 60-metre analysis window. The score is consistent and 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-point-0f419631/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)