# HALOWERK Atlantic Land – Netherlands Built-Up Share

> HALOWERK Atlantic Land – Netherlands Built-Up Share is a paid API for AI agents from atlantikland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns the share of ESA WorldCover 2021 pixels classified as built-up land for a given coordinate within the Netherlands boundary.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/nl-built-up-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-atlantic-land-netherlands-built-up-share-dae851bf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_p3AnsL5mKSwXE-QRKsy5p

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-built-up-share-dae851bf -d '<json body>'
```

Example prompt: What share of the land around coordinates 52.3676° N, 4.9041° E in the Netherlands is classified as built-up according to ESA WorldCover 2021?

## When to prefer this

Choose this endpoint when you need a fast, satellite-derived built-up land cover fraction specifically for a point location in the Netherlands, backed by ESA WorldCover 2021 data. It is the right choice for urbanization screening, environmental baseline assessments, land use analytics, and site suitability workflows focused on Dutch territory. Prefer it over generic geocoding or land-use APIs when you need a quantitative pixel-share metric rather than categorical labels.

## Known failure modes

- Coordinate outside Netherlands boundary: request is rejected before payment is charged
- Coordinate outside the broader European coverage window (lat 34–72.5, lon -31.5–40.5): rejected with validation error
- Missing or malformed latitude/longitude fields: schema validation error
- Network or service unavailability: standard HTTP 5xx error

## How this service works

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

## Output

A numeric share (fraction or percentage) indicating what proportion of ESA WorldCover 2021 pixels within the analysis grid around the supplied coordinate are classified as built-up land. Only returned for coordinates validated as falling within the Natural Earth boundary of the Netherlands.

## 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-built-up-share-dae851bf/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)