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

> HALOWERK Central Land – Austria Soil Sand Fraction (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 sand fraction for the 0–5 cm soil layer at a given coordinate validated within Austria's boundary.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/at-soil-sand
- 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-austria-soil-sand-fraction-0-5-cm-843614b1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8LgFYq3gaPzyapVPb04mO

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-sand-fraction-0-5-cm-843614b1 -d '<json body>'
```

Example prompt: What's the mean sand fraction in the top 5 cm of soil at latitude 47.8 and longitude 13.0 in Austria? I need the SoilGrids value for that spot.

## When to prefer this

Use this endpoint when you need point-specific SoilGrids sand fraction data for a location confirmed to be within Austria. It is purpose-built for Austrian territory with boundary validation, making it preferable to a generic global soil API when your use case is Austria-specific and you want pre-payment coordinate rejection for out-of-scope requests.

## Known failure modes

- Coordinate outside Austria boundary — request rejected before payment is processed
- Coordinate within European coverage range but outside Austria — validation failure returned
- Latitude or longitude out of the accepted European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Invalid or missing coordinate values — input schema rejection
- Payment failure via x402 protocol — transaction not completed

## How this service works

Mean SoilGrids sand fraction 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 mean sand fraction value (likely as a percentage or proportion) from the SoilGrids dataset for the 0–5 cm depth layer at the specified coordinate, validated to lie within Austria's 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-central-land-austria-soil-sand-fraction-0-5-cm-843614b1/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)