# HALOWERK Central Land – Slovenia Soil Bulk Density (0–5 cm)

> HALOWERK Central Land – Slovenia Soil Bulk Density (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 bulk density for the 0–5 cm soil layer at a given WGS84 coordinate within Slovenia, validated against the Natural Earth boundary.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/si-soil-bulk-density
- 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-soil-bulk-density-0-5-cm-a1cd0070
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ixP1hbgjfTN2kfxbWTXmx

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-bulk-density-0-5-cm-a1cd0070 -d '<json body>'
```

Example prompt: What's the mean SoilGrids bulk density for the top 5 cm of soil at latitude 46.12, longitude 14.49 in Slovenia?

## When to prefer this

Choose this endpoint when you need SoilGrids bulk density specifically for the 0–5 cm surface layer at a point coordinate within Slovenia, particularly when working with Slovenian land data, agricultural assessments, or soil carbon studies. It is preferable to a general SoilGrids API call when you want a lightweight, pre-validated, pay-per-call result without managing SoilGrids authentication or coordinate boundary logic yourself.

## Known failure modes

- Coordinate outside Slovenia boundary: request is rejected before processing or payment
- Latitude or longitude out of the stated European coverage range (lat 34–72.5, lon -31.5–40.5): validation error
- Invalid coordinate format or missing required fields: schema validation error
- SoilGrids upstream data unavailable: service error or timeout
- Payment failure: x402 payment not completed, request not processed

## How this service works

Mean SoilGrids bulk density 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 mean bulk density value (g/cm³ or kg/dm³) from SoilGrids for the 0–5 cm soil depth layer at the specified coordinate, derived from the SoilGrids dataset and validated to be within Slovenian territory before the 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-bulk-density-0-5-cm-a1cd0070/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)