# HALOWERK Baltic Land – Poland Cropland Share

> HALOWERK Baltic Land – Poland Cropland Share is a paid API for AI agents from baltikum.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 Poland's boundary.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/pl-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-baltic-land-poland-cropland-share-acfdef0d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_n931Jnt4TU6Auyyfvu2LN

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-baltic-land-poland-cropland-share-acfdef0d -d '<json body>'
```

Example prompt: What share of the land around latitude 52.2 and longitude 21.0 in Poland is classified as cropland according to ESA WorldCover 2021?

## When to prefer this

Choose this endpoint when you need ESA WorldCover 2021 cropland land cover fractions specifically for coordinates within Poland. It is ideal for agricultural analysis, land-use audits, environmental assessments, or investment due diligence on Polish sites. It performs boundary validation before charging, making it safe to call without worrying about out-of-country coordinates incurring fees. Prefer it over generic GIS APIs when you specifically need the WorldCover 2021 cropland classification layer for Poland.

## Known failure modes

- Coordinate outside Poland's Natural Earth boundary — rejected before payment with a validation error
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Missing required latitude or longitude parameter — request rejected
- Network or upstream ESA WorldCover data unavailability — service error response

## How this service works

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

## Output

A numeric value representing the share (fraction or percentage) of ESA WorldCover 2021 pixels within the analysis window around the given coordinate that are classified as cropland. Only valid for coordinates within Poland's Natural Earth boundary; requests outside are rejected before any charge.

## 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-baltic-land-poland-cropland-share-acfdef0d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from baltikum.halowerk.com](https://www.zero.xyz/host/baltikum.halowerk.com/llms.txt)