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

> HALOWERK Central Land – Slovakia 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 within Slovakia, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/sk-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-slovakia-soil-sand-fraction-0-5-cm-e612dfcc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__MCfVmi8OQSSQftdtxkQA

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-slovakia-soil-sand-fraction-0-5-cm-e612dfcc -d '<json body>'
```

Example prompt: What's the mean sand fraction in the top 0-5 cm of soil at latitude 48.15, longitude 17.12 in Slovakia?

## When to prefer this

Choose this endpoint when you need soil sand fraction specifically for a location within Slovakia at the 0-5 cm depth from the SoilGrids dataset. Prefer it over general-purpose geospatial APIs when you need authoritative, globally consistent SoilGrids-sourced soil texture data at fine resolution for Slovak territory. It's particularly useful for agricultural planning, environmental assessment, or construction site analysis in Slovakia.

## Known failure modes

- Coordinate outside Slovakia's Natural Earth boundary — rejected before payment with a boundary validation error
- Latitude or longitude outside the European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Missing or malformed latitude/longitude — input validation failure
- No SoilGrids data available for the given coordinate — null or empty result
- Network or upstream SoilGrids service unavailability — service error response

## How this service works

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

## Output

A numeric value representing the mean sand fraction (as a proportion or percentage) of the soil at the 0-5 cm depth layer for the queried coordinate, sourced from SoilGrids. Coordinates outside Slovakia's Natural Earth boundary are rejected before any charge is applied.

## 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-slovakia-soil-sand-fraction-0-5-cm-e612dfcc/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)