# HALOWERK Southern Land – Malta Built-Up Share

> HALOWERK Southern Land – Malta Built-Up Share is a paid API for AI agents from suedland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Returns the share of ESA WorldCover 2021 pixels classified as built-up land at a given coordinate within Malta.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/mt-built-up-share
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-southern-land-malta-built-up-share-d6a59144
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xn4-uCyHnE8fCWSN6GvCu

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-built-up-share-d6a59144 -d '<json body>'
```

Example prompt: What share of the ESA WorldCover 2021 pixels are classified as built-up land at latitude 35.8997, longitude 14.5147 in Malta?

## When to prefer this

Choose this endpoint when you need ESA WorldCover 2021-based built-up land cover fraction specifically for Malta coordinates. It validates against Malta's official boundary before charging, making it safe for automated pipelines. Prefer it over generic land cover APIs when you need a consistent, satellite-derived urbanization metric anchored to a specific country boundary.

## Known failure modes

- Coordinate falls outside Malta's Natural Earth boundary — rejected before payment is processed
- Latitude or longitude outside European coverage bounds (lat 34–72.5, lon -31.5–40.5) — validation error
- Malformed or missing coordinate values — schema validation failure
- Payment authorization failure — call not executed

## How this service works

Share of ESA WorldCover 2021 pixels classified as built-up. The coordinate is validated against the Natural Earth boundary for Malta; results outside it are rejected before payment.

## Output

A numeric share (fraction or percentage) of ESA WorldCover 2021 satellite-derived pixels within the analysis area around the given coordinate that are classified as built-up land, valid only for coordinates within the Natural Earth boundary of Malta.

## 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-built-up-share-d6a59144/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)