# HALOWERK Central Land – Slovenia Grassland Share

> HALOWERK Central Land – Slovenia 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 at a given coordinate within Slovenia.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/si-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-slovenia-grassland-share-d623db1f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j7Bu8sb5IbrOaDC4Q8tm_

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-slovenia-grassland-share-d623db1f -d '<json body>'
```

Example prompt: What share of the land around latitude 46.05, longitude 14.51 in Slovenia is classified as grassland according to ESA WorldCover 2021?

## When to prefer this

Use this endpoint when you specifically need the ESA WorldCover 2021 grassland land-cover share for a coordinate confirmed to be within Slovenia. It is the right choice for ecological assessments, agricultural site analysis, carbon accounting, or any workflow requiring a precise grassland fraction from a globally consistent satellite-derived land cover dataset, scoped to Slovenia with built-in boundary validation.

## Known failure modes

- Coordinate outside Slovenia's Natural Earth boundary — request rejected before payment
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Non-numeric or missing latitude/longitude — schema validation failure
- Service unavailable or upstream ESA WorldCover data access error

## How this service works

Share of ESA WorldCover 2021 pixels classified as grassland. The coordinate is validated against the Natural Earth boundary for Slovenia; 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 given coordinate that are classified as grassland, valid only for coordinates within Slovenia's Natural Earth 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-slovenia-grassland-share-d623db1f/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)