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

> HALOWERK Eastern Land – Cyprus Soil pH (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 soil pH in H2O for the 0-5 cm surface layer at a given WGS84 coordinate within Cyprus, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/cy-soil-ph
- 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-ph-0-5-cm-441dae7c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oTnXuYIiPOKIgmFqGqK3H

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-ph-0-5-cm-441dae7c -d '<json body>'
```

Example prompt: What's the mean soil pH in H2O for the top 0-5 cm layer at latitude 34.92, longitude 33.62 in Cyprus?

## When to prefer this

Choose this endpoint when you specifically need surface-layer (0-5 cm) soil pH data for a location within Cyprus, particularly when working within an x402 micropayment-enabled agentic workflow. Prefer it over generic SoilGrids API calls when boundary validation against Cyprus is required by your use case. It complements sibling endpoints on the same platform for other soil and terrain properties (CEC, coarse fragments, elevation) at the same coordinate.

## Known failure modes

- Coordinate outside Cyprus Natural Earth boundary — request rejected before payment
- Latitude or longitude out of the published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Malformed input (non-numeric or missing latitude/longitude) — schema validation failure
- Payment failure via x402 protocol — call not executed
- SoilGrids upstream data unavailable for the queried point — null or error response

## How this service works

Mean SoilGrids pH in H2O 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 soil pH value (measured in H2O) for the 0-5 cm depth layer at the queried coordinate, sourced from SoilGrids. Returns an error or rejection if the coordinate falls outside the validated Cyprus 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-eastern-land-cyprus-soil-ph-0-5-cm-441dae7c/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)