# HALOWERK Central Land – Liechtenstein Grassland Share

> HALOWERK Central Land – Liechtenstein Grassland Share is a paid API for AI agents from mitteleuropa.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 WGS84 coordinate within Liechtenstein.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/li-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-central-land-liechtenstein-grassland-share-c21bd3ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9KIVYragE1QWG4nhEzlE3

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-central-land-liechtenstein-grassland-share-c21bd3ad -d '<json body>'
```

Example prompt: What share of the land around latitude 47.14, longitude 9.52 in Liechtenstein is classified as grassland according to ESA WorldCover 2021?

## When to prefer this

Choose this endpoint when you need a precise, pixel-level grassland land-cover fraction derived from ESA WorldCover 2021 specifically for a point location within Liechtenstein. It is ideal for environmental assessments, habitat analyses, or land-use audits requiring authoritative satellite-derived grassland classification rather than coarser national statistics or self-reported land-use data.

## Known failure modes

- Coordinate outside Liechtenstein boundary → request rejected before payment, error indicating out-of-bounds
- Coordinate outside European coverage range (lat 34–72.5, lon -31.5–40.5) → validation error
- Malformed or missing latitude/longitude fields → schema validation error
- Payment failure → 402 response, no data returned

## How this service works

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

## Output

A numeric value representing the fraction (share) of ESA WorldCover 2021 pixels in the analysis neighborhood classified as grassland, for the queried coordinate inside Liechtenstein. Coordinates outside the Liechtenstein Natural Earth 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-central-land-liechtenstein-grassland-share-c21bd3ad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mitteleuropa.halowerk.com](https://www.zero.xyz/host/mitteleuropa.halowerk.com/llms.txt)