# HALOWERK Eastern Land – Cyprus Grassland Share

> HALOWERK Eastern Land – Cyprus Grassland Share is a paid API for AI agents from ostland.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 Cyprus.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/cy-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-eastern-land-cyprus-grassland-share-904a2a84
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_53swgo803VFwL3XOoU5-r

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-eastern-land-cyprus-grassland-share-904a2a84 -d '<json body>'
```

Example prompt: What share of the land cover around latitude 34.92, longitude 33.62 in Cyprus is classified as grassland according to ESA WorldCover 2021?

## When to prefer this

Choose this endpoint when you need ESA WorldCover 2021 grassland land cover fractions specifically for coordinates within Cyprus. It is purpose-built for Cyprus with boundary validation, making it more reliable than general land cover APIs for this geography. Prefer it for ecological, agricultural, or land use analysis tasks targeting Cyprus locations.

## Known failure modes

- Coordinate outside Cyprus boundary — rejected before payment with a validation error
- Coordinate outside the published European coverage bounds (lat 34–72.5, lon -31.5–40.5) — rejected with an input validation error
- Malformed or missing latitude/longitude fields — returns a schema validation error
- Service unavailability — HTTP 5xx error

## How this service works

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

## Output

A numeric value representing the share (fraction or percentage) of ESA WorldCover 2021 pixels classified as grassland within the analysis grid centered on the provided coordinate. Only valid for coordinates within the Cyprus 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-eastern-land-cyprus-grassland-share-904a2a84/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ostland.halowerk.com](https://www.zero.xyz/host/ostland.halowerk.com/llms.txt)