# HALOWERK Central Land – Czechia Soil pH (0-5 cm)

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

Returns the mean SoilGrids pH in H2O for the 0-5 cm topsoil layer at a given WGS84 coordinate within Czechia, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/cz-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-central-land-czechia-soil-ph-0-5-cm-c7f15c24
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OQwY6_3fAvH0zKVHhVKhM

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-central-land-czechia-soil-ph-0-5-cm-c7f15c24 -d '<json body>'
```

Example prompt: What's the topsoil pH (0–5 cm depth) at latitude 49.74 and longitude 13.38 in Czechia? I need the SoilGrids H2O pH reading for that point.

## When to prefer this

Choose this endpoint when you need topsoil pH (H2O, 0–5 cm) specifically for a point location within Czechia, sourced from SoilGrids. It is ideal for agricultural planning, land assessment, or environmental monitoring workflows where boundary validation against Czechia is required and micropayment-per-call billing is acceptable.

## Known failure modes

- Coordinate outside Czechia boundary — request rejected before payment, error indicating invalid location
- Coordinate outside published European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation failure
- Malformed or missing latitude/longitude — input validation error
- SoilGrids source data unavailable for sparse coverage areas — possible 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 Czechia; results outside it are rejected before payment.

## Output

A numeric pH value (H2O method) representing the mean SoilGrids pH for the 0–5 cm topsoil layer at the queried coordinate. If the coordinate falls outside Czechia's Natural Earth boundary, the request is rejected before 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-central-land-czechia-soil-ph-0-5-cm-c7f15c24/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mitteleuropa.halowerk.com](https://www.zero.xyz/host/mitteleuropa.halowerk.com/llms.txt)