# HALOWERK Eastern Land – Cyprus Built-Up Share

> HALOWERK Eastern Land – Cyprus Built-Up 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 built-up for a coordinate location within Cyprus.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/cy-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-eastern-land-cyprus-built-up-share-9a74ad0d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pKrtbBoj8zUeTI41rUSWE

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-cyprus-built-up-share-9a74ad0d -d '<json body>'
```

Example prompt: What share of ESA WorldCover 2021 pixels are classified as built-up at latitude 35.1731, longitude 33.3642 in Cyprus?

## When to prefer this

Use this endpoint when you need pixel-level ESA WorldCover 2021 built-up land share for a specific point location within Cyprus, especially when you want validated, payment-efficient per-call access without managing satellite data yourself. Prefer it over generic land-cover APIs when Cyprus-specific boundary validation is required to avoid erroneous results for nearby coordinates in the sea or neighboring countries.

## Known failure modes

- Coordinate outside Cyprus boundary — rejected before payment, returns a validation error
- Coordinate within European bounding box but not inside Cyprus — rejected by Natural Earth boundary check
- Missing or malformed latitude/longitude fields — returns schema validation error
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — rejected
- Network or server error — standard HTTP 5xx response

## How this service works

Share of ESA WorldCover 2021 pixels classified as built-up. The coordinate is validated against the Natural Earth boundary for Cyprus; 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 area around the given coordinate that are classified as built-up land. Coordinates outside the Cyprus boundary are rejected before any payment is charged.

## 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-cyprus-built-up-share-9a74ad0d/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)