# HALOWERK Eastern Land – Bulgaria Cropland Share

> HALOWERK Eastern Land – Bulgaria Cropland 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 cropland for a given coordinate within Bulgaria.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/bg-cropland-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-bulgaria-cropland-share-cfa28e2e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XNSdhG6XJ1qSnmwCfm06o

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-bulgaria-cropland-share-cfa28e2e -d '<json body>'
```

Example prompt: What share of ESA WorldCover 2021 pixels are classified as cropland at latitude 42.15, longitude 25.33 in Bulgaria?

## When to prefer this

Use this endpoint when you need a precise, satellite-derived cropland land-cover fraction for a specific point inside Bulgaria, sourced from ESA WorldCover 2021. It is ideal for agricultural analysis, land suitability assessment, or risk modeling workflows that are scoped to Bulgaria, since the endpoint enforces a Bulgaria-specific boundary check and rejects out-of-scope coordinates before charging.

## Known failure modes

- Coordinate outside Bulgaria's Natural Earth boundary — request rejected before payment, returns validation error
- Coordinate within the accepted European longitude/latitude range but outside Bulgaria — rejected at boundary check
- Missing or malformed latitude/longitude values — returns schema validation error
- Coordinate on the exact boundary edge may produce ambiguous validation result

## How this service works

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

## Output

A numeric value representing the share (fraction or percentage) of ESA WorldCover 2021 pixels classified as cropland within the analysis area around the given coordinate. Coordinates outside Bulgaria's Natural Earth boundary are rejected before payment is processed.

## 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-bulgaria-cropland-share-cfa28e2e/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)