# HALOWERK Eastern Land – Cyprus Soil Clay Fraction (0-5 cm)

> HALOWERK Eastern Land – Cyprus Soil Clay Fraction (0-5 cm) is a paid API for AI agents from ostland.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).

Returns the mean SoilGrids clay fraction for the 0–5 cm soil layer at a given coordinate within Cyprus, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/cy-soil-clay
- Price: $0.004/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-soil-clay-fraction-0-5-cm-5e768307
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xddIWBfn_khrqC4uFefcO

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-soil-clay-fraction-0-5-cm-5e768307 -d '<json body>'
```

Example prompt: What's the mean clay fraction in the top 5 cm of soil at latitude 34.92, longitude 33.04 in Cyprus? I need it for a land suitability assessment.

## When to prefer this

Use this endpoint when you need fine-grained, point-level topsoil clay fraction data specifically within Cyprus and want boundary validation built in before payment. Prefer this over generic SoilGrids API access when operating on Cyprus coordinates and needing a low-cost, single-call lookup with x402 micropayment integration.

## Known failure modes

- Coordinate outside Cyprus boundary — request rejected before payment, returns a boundary validation error
- Coordinate within European bounding box but outside Cyprus Natural Earth polygon — rejected
- Latitude or longitude out of the published European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- SoilGrids data unavailable for the requested cell — may return null or data gap error
- Malformed request body — returns schema validation error

## How this service works

Mean SoilGrids clay fraction for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Cyprus; results outside it are rejected before payment.

## Output

A numeric value representing the mean clay fraction (as a proportion or percentage) for the 0–5 cm soil layer at the specified coordinate, sourced from SoilGrids. Coordinates outside the Cyprus boundary are rejected before any charge is applied.

## 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-soil-clay-fraction-0-5-cm-5e768307/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)