# HALOWERK Eastern Land – Cyprus Soil CEC (0–5 cm)

> HALOWERK Eastern Land – Cyprus Soil CEC (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 cation exchange capacity (CEC) for the 0–5 cm soil layer at a given coordinate within Cyprus.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/cy-soil-cec
- 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-cec-0-5-cm-612707fb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wrVNMPaIRHDOI5HV-T4TL

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-cec-0-5-cm-612707fb -d '<json body>'
```

Example prompt: What is the mean cation exchange capacity of the topsoil (0–5 cm) at latitude 34.92, longitude 33.03 in Cyprus? I need the SoilGrids CEC value for that exact point.

## When to prefer this

Use this endpoint when you need point-level SoilGrids CEC data specifically for Cyprus and want built-in boundary validation to avoid charges for out-of-area queries. Prefer it over general SoilGrids API access when operating in a micropayment (x402) agentic workflow that requires per-call pricing and Cyprus-scoped geofencing.

## Known failure modes

- Coordinate outside Cyprus boundary — request rejected with a validation error before payment
- Latitude or longitude out of the stated European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Malformed or missing coordinate fields — input validation failure
- SoilGrids data unavailable for the exact coordinate — null or no-data response

## How this service works

Mean SoilGrids cation exchange capacity 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 mean cation exchange capacity value (cmolc/kg) for the 0–5 cm soil layer derived from SoilGrids, specific to the queried coordinate inside Cyprus. Coordinates outside the Cyprus Natural Earth 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-cec-0-5-cm-612707fb/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)