# HALOWERK Atlantic Land – Netherlands Grassland Share

> HALOWERK Atlantic Land – Netherlands Grassland Share is a paid API for AI agents from atlantikland.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 for a given coordinate within the Netherlands.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/nl-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-atlantic-land-netherlands-grassland-share-c96d6fcc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dqG-KDRIz-x7el9OC8522

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-atlantic-land-netherlands-grassland-share-c96d6fcc -d '<json body>'
```

Example prompt: What share of the land around latitude 52.1, longitude 5.1 in the Netherlands is classified as grassland according to ESA WorldCover 2021?

## When to prefer this

Use this endpoint when you need ESA WorldCover 2021-based grassland land cover data for a specific point location within the Netherlands. It is ideal for agricultural due diligence, environmental baseline assessments, land use enrichment pipelines, or any workflow requiring per-point grassland fraction data validated against official Dutch boundaries. Prefer it over generic GIS APIs when you want a pre-validated, pay-per-call approach with no setup overhead.

## Known failure modes

- Coordinate outside Netherlands boundary – request rejected before payment is processed
- Coordinate outside European coverage bounding box (lat 34–72.5, lon -31.5–40.5) – validation error
- Malformed or missing latitude/longitude fields – schema validation error
- No grassland pixels in the analysis grid – returns zero share
- Payment failure via x402 protocol – call not executed

## How this service works

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

## Output

A numeric value representing the share (fraction or percentage) of ESA WorldCover 2021 pixels around the queried coordinate that are classified as grassland, restricted to coordinates validated within the Netherlands 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-atlantic-land-netherlands-grassland-share-c96d6fcc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from atlantikland.halowerk.com](https://www.zero.xyz/host/atlantikland.halowerk.com/llms.txt)