# HALOWERK Central Land – Austria Grassland Share

> HALOWERK Central Land – Austria 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 2026-09-13).

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

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/at-grassland-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-austria-grassland-share-4c823f0c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-Na-oR3jkWVhM9_lZwy_H

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-austria-grassland-share-4c823f0c -d '<json body>'
```

Example prompt: What share of ESA WorldCover 2021 pixels are classified as grassland at latitude 47.8 and longitude 13.0 in Austria?

## When to prefer this

Use this endpoint when you need land cover information specifically for grassland at a precise coordinate within Austria, sourced from ESA WorldCover 2021. It is ideal for environmental assessments, agricultural analysis, or geospatial enrichment workflows focused on Austria. Prefer this over generic land cover APIs when you need a pre-validated, single-metric grassland fraction at low cost per query.

## Known failure modes

- Coordinate outside Austria boundary — rejected before payment, boundary validation against Natural Earth dataset fails
- Latitude or longitude out of European coverage bounds (lat 34–72.5, lon -31.5–40.5) — input validation error
- Malformed request body or missing required fields — input schema validation error
- Service unavailable or upstream ESA data issue — server error response

## How this service works

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

## Output

A numeric value representing the fraction (share) of ESA WorldCover 2021 pixels in the vicinity of the given coordinate that are classified as grassland, validated to fall within the Austrian national boundary.

## 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-austria-grassland-share-4c823f0c/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)