# HALOWERK Central Land – Liechtenstein Tree Cover Share

> HALOWERK Central Land – Liechtenstein Tree Cover Share is a paid API for AI agents from mitteleuropa.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).

Returns the share of ESA WorldCover 2021 pixels classified as tree cover for a given coordinate within Liechtenstein.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/li-tree-cover-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-central-land-liechtenstein-tree-cover-share-2b70421e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PSps1jMsUOSolAFHySsqv

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-tree-cover-share-2b70421e -d '<json body>'
```

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

## When to prefer this

Choose this endpoint when you specifically need ESA WorldCover 2021 tree cover fraction for a point coordinate within Liechtenstein. Prefer it over generic land cover APIs when you need Liechtenstein-validated results with per-call micropayment pricing and no subscription overhead. Use sibling endpoints on the same host for other land cover classes (grassland, dominant class) or terrain metrics (elevation, slope) at the same location.

## Known failure modes

- Coordinate falls outside Liechtenstein boundary — rejected before payment with a validation error
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation failure
- Malformed request body or missing required fields — HTTP 400 error
- Service unavailable or upstream ESA data fetch failure — HTTP 500 error

## How this service works

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

## Output

A numerical share (fraction or percentage) of ESA WorldCover 2021 pixels in the analysis area classified as tree cover, specific to the queried coordinate within Liechtenstein.

## 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-tree-cover-share-2b70421e/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)