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

> HALOWERK Central Land – Slovenia Soil Silt 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 silt fraction for the 0–5 cm soil layer at a given coordinate within Slovenia.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/si-soil-silt
- 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-slovenia-soil-silt-fraction-0-5-cm-afb2623f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_icoyOxgaW-ENw8tz4eXRh

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-soil-silt-fraction-0-5-cm-afb2623f -d '<json body>'
```

Example prompt: What's the mean silt fraction in the top 0-5 cm of soil at latitude 46.05 and longitude 14.51 in Slovenia?

## When to prefer this

Choose this endpoint when you need soil silt fraction specifically for the 0–5 cm topsoil layer at a point within Slovenia, using SoilGrids data validated against official Slovenian boundaries. Prefer it over generic soil APIs when you need boundary-validated, micropayment-priced lookups without a subscription.

## Known failure modes

- Coordinate outside Slovenia boundary — request rejected before processing
- Coordinate within European coverage bounding box but outside Slovenia polygon — boundary validation failure
- Latitude or longitude out of published European range (34–72.5°N, -31.5–40.5°E) — schema validation error
- Payment not provided or insufficient — x402 payment required error
- SoilGrids data unavailable for the exact coordinate — no data returned

## How this service works

Mean SoilGrids silt 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

A numeric value representing the mean silt fraction (as a proportion or percentage) for the 0–5 cm soil depth at the specified coordinate, sourced from SoilGrids. Coordinates outside the Slovenia boundary are rejected before any result is returned.

## 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-soil-silt-fraction-0-5-cm-afb2623f/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)