# HALOWERK Southern Land Malta Drainage Tendency

> HALOWERK Southern Land Malta Drainage Tendency is a paid API for AI agents from suedland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Returns the relative runoff tendency for a coordinate in Malta, derived from terrain slope and surface ruggedness.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/mt-drainage-tendency
- 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-southern-land-malta-drainage-tendency-6bc9e8a9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jK0byqZmy3eumr_8n7DLE

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-southern-land-malta-drainage-tendency-6bc9e8a9 -d '<json body>'
```

Example prompt: What is the drainage tendency at latitude 35.9 and longitude 14.5 in Malta — I need to know how prone to runoff this terrain is based on its slope and ruggedness.

## When to prefer this

Use this endpoint when you need a terrain-derived drainage or runoff tendency score specifically for a location within Malta. It is purpose-built for Maltese coordinates and validates against the Natural Earth boundary for Malta before charging. Prefer it over generic elevation or hydrology APIs when you need a fast, per-point runoff tendency index informed by slope and ruggedness rather than raw elevation data.

## Known failure modes

- Coordinate outside Malta boundary — request rejected before payment is processed
- Latitude or longitude out of the declared European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Malformed or missing coordinate fields — schema validation failure
- Payment failure via x402 protocol — call not processed

## How this service works

Relative runoff tendency derived from slope and ruggedness. The coordinate is validated against the Natural Earth boundary for Malta; results outside it are rejected before payment.

## Output

A numeric drainage tendency value representing the relative likelihood of surface runoff at the specified coordinate, derived from terrain slope and ruggedness metrics. Coordinates outside the Malta boundary are rejected before processing.

## 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-southern-land-malta-drainage-tendency-6bc9e8a9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from suedland.halowerk.com](https://www.zero.xyz/host/suedland.halowerk.com/llms.txt)