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

> HALOWERK Central Land – Austria 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 2026-09-13).

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

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/at-soil-ph
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-central-land-austria-soil-ph-0-5-cm-dacb5ba8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_77HvfsjrEWyjf8c1cKCJh

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-austria-soil-ph-0-5-cm-dacb5ba8 -d '<json body>'
```

Example prompt: What's the mean soil pH in the top 0–5 cm at latitude 48.2 and longitude 16.37 in Austria? I need the SoilGrids H2O pH value for that spot.

## When to prefer this

Choose this endpoint when you specifically need topsoil pH (H2O) from the SoilGrids dataset for a point location within Austria and want built-in boundary validation to ensure the coordinate is genuinely inside the country before being charged. It is ideal for agricultural planning, environmental studies, or land assessment workflows targeting Austrian territory at a low per-call cost.

## Known failure modes

- Coordinate outside Austria boundary → request rejected with boundary validation error before payment
- Coordinate within European coverage range but outside Austria → rejected by Natural Earth polygon check
- Latitude or longitude outside the published European range (lat 34–72.5, lon -31.5–40.5) → schema validation error
- Missing or malformed latitude/longitude → input validation failure
- SoilGrids data unavailable for the queried cell → no-data 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 Austria; results outside it are rejected before payment.

## Output

A numeric value representing the mean SoilGrids pH in H2O for the 0–5 cm topsoil layer at the queried coordinate within Austria. Coordinates outside the Austrian Natural Earth boundary are rejected before any charge is made.

## 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-austria-soil-ph-0-5-cm-dacb5ba8/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)