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

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

Returns the mean SoilGrids sand fraction for the 0-5 cm soil depth layer at a given coordinate within Slovenia.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/si-soil-sand
- 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-slovenia-sand-fraction-0-5-cm-c7dc4537
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VOjNcezDqZW_Gafjwbvnd

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-slovenia-sand-fraction-0-5-cm-c7dc4537 -d '<json body>'
```

Example prompt: What's the mean sand fraction in the top 5 cm of soil at latitude 46.05 and longitude 14.51 in Slovenia?

## When to prefer this

Choose this endpoint when you specifically need sand fraction data for a location within Slovenia at the 0-5 cm topsoil layer, sourced from SoilGrids. It is ideal when you require per-point soil texture queries with built-in geographic validation against Slovenia's boundary. Prefer sibling endpoints for other soil properties (silt, pH, coarse fragments) or other terrain metrics (elevation, slope) at the same location.

## Known failure modes

- Coordinate outside Slovenia boundary — request is rejected before processing or payment
- Latitude or longitude outside the published European coverage range (lat 34-72.5, lon -31.5 to 40.5) — validation error
- Coordinate technically within European coverage but outside Slovenia — rejected by boundary check
- Invalid or missing latitude/longitude — schema validation error
- Service unavailable or upstream SoilGrids data not accessible — server error

## How this service works

Mean SoilGrids sand fraction for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Slovenia; results outside it are rejected before payment.

## Output

Returns the mean sand fraction (as a proportion or percentage) from SoilGrids data for the 0-5 cm soil depth layer at the queried WGS84 coordinate, validated to fall within Slovenia's Natural Earth 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-slovenia-sand-fraction-0-5-cm-c7dc4537/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)