# HALOWERK Eastern Land – Hungary Tree Cover Share

> HALOWERK Eastern Land – Hungary Tree Cover 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 tree cover for a given coordinate within Hungary.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/hu-tree-cover-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-hungary-tree-cover-share-d10e59b3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_T-8Hj_Ov7p3-5hjv9CigM

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-hungary-tree-cover-share-d10e59b3 -d '<json body>'
```

Example prompt: What share of ESA WorldCover 2021 pixels are classified as tree cover at latitude 47.5 and longitude 19.1 in Hungary?

## When to prefer this

Choose this endpoint when you need ESA WorldCover 2021 tree cover share specifically for a point in Hungary and want automatic boundary validation to prevent out-of-territory lookups. It is ideal for precision land-use analysis, environmental assessments, or agricultural site evaluation within Hungary, where a curated geospatial dataset and per-call micropayment model are acceptable.

## Known failure modes

- Coordinate outside Hungary's Natural Earth boundary — request rejected before payment is processed
- Coordinate within European bounding box but outside Hungary — boundary validation failure
- Malformed or missing latitude/longitude fields — schema validation error
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — rejected

## How this service works

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

## Output

A numeric share (fraction or percentage) of ESA WorldCover 2021 pixels at the queried coordinate that are classified as tree cover, limited to validated coordinates within Hungary'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-eastern-land-hungary-tree-cover-share-d10e59b3/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)