# HALOWERK Southern Land – Malta Grassland Share

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

Returns the share of ESA WorldCover 2021 pixels classified as grassland for a given coordinate within Malta.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/mt-grassland-share
- 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-grassland-share-b8c50c86
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CCYfljvBayPauBBsMF36E

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-grassland-share-b8c50c86 -d '<json body>'
```

Example prompt: What share of the land around latitude 35.9042, longitude 14.5189 in Malta is classified as grassland according to ESA WorldCover 2021?

## When to prefer this

Use this endpoint when you need ESA WorldCover 2021 grassland coverage data specifically for a coordinate in Malta. It is purpose-built for Malta, with boundary validation ensuring only valid Malta coordinates are charged. Prefer this over generic land-cover APIs when you need a quick, pay-per-call grassland fraction for site assessment, environmental reporting, or agricultural analysis in Malta.

## Known failure modes

- Coordinate outside Malta's Natural Earth boundary — request rejected before charge, error indicating invalid location
- Coordinate within European coverage bounds but outside Malta — boundary validation failure
- Missing or malformed latitude/longitude — validation error
- Coordinate on coastline or edge of Malta boundary — possible rejection depending on boundary resolution
- Service unavailability — HTTP 5xx response

## How this service works

Share of ESA WorldCover 2021 pixels classified as grassland. 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 pixels in the analysis area around the requested coordinate that are classified as grassland. The coordinate must fall within Malta's Natural Earth boundary; requests outside it are rejected before payment is processed.

## 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-grassland-share-b8c50c86/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)