# HALOWERK Southern Land – Malta Surface Aspect

> HALOWERK Southern Land – Malta Surface Aspect is a paid API for AI agents from suedland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns the circular direction (clockwise from north) of the dominant surface gradient for a coordinate point validated within Malta's boundary.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/mt-aspect
- 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-southern-land-malta-surface-aspect-310cdc84
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dgxPOw2jookrqrj_2NRKw

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-surface-aspect-310cdc84 -d '<json body>'
```

Example prompt: What direction does the terrain slope face at latitude 35.89, longitude 14.45 in Malta — give me the aspect angle clockwise from north.

## When to prefer this

Choose this endpoint when you need terrain aspect (slope-facing direction) specifically for coordinates within Malta, and you want pre-validated geographic boundary enforcement before incurring any cost. It is part of a broader land analysis suite on the same host, making it ideal for multi-variable terrain workflows covering Malta.

## Known failure modes

- Coordinate falls outside Malta's Natural Earth boundary — request rejected before payment, error returned
- Latitude or longitude out of the accepted European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Malformed request body or missing required fields — HTTP 400 error
- Payment failure or insufficient USDC balance — HTTP 402 error

## How this service works

Circular direction of the dominant surface gradient, clockwise from north. The coordinate is validated against the Natural Earth boundary for Malta; results outside it are rejected before payment.

## Output

A numeric value representing the dominant surface gradient direction in degrees, measured clockwise from north (0–360°), for the queried coordinate within Malta. Coordinates outside the Natural Earth Malta boundary are rejected before payment is charged.

## 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-surface-aspect-310cdc84/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)