# HALOWERK Central Land – Slovenia Soil Organic Carbon (0-5 cm)

> HALOWERK Central Land – Slovenia Soil Organic Carbon (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 organic carbon content for the 0-5 cm topsoil layer at a given coordinate within Slovenia, validated against the Natural Earth boundary.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/si-soil-organic-carbon
- 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-organic-carbon-0-5-cm-03acafcb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_d_Yp6R5WKtc9LA6V0Ezgt

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-organic-carbon-0-5-cm-03acafcb -d '<json body>'
```

Example prompt: What's the mean soil organic carbon in the top 5 cm at latitude 46.05, longitude 14.51 in Slovenia — the SoilGrids value for that location?

## When to prefer this

Use this endpoint when you need point-level SoilGrids topsoil organic carbon data specifically for locations within Slovenia. It combines boundary validation (ensuring the coordinate is inside Slovenia) with a micro-payment model, making it suitable for agent workflows that need trustworthy, pay-per-query soil data without managing a full SoilGrids API integration. Prefer it over raw SoilGrids access when you want built-in geographic validation and a simple per-call pricing model.

## Known failure modes

- Coordinate outside Slovenia's Natural Earth boundary — request rejected before payment is charged
- Latitude or longitude outside the declared European coverage range (34–72.5°N, -31.5–40.5°E) — schema validation error
- Malformed or missing coordinate parameters — 400-level error
- Payment failure via x402 protocol — call not executed

## How this service works

Mean SoilGrids organic carbon 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 SoilGrids organic carbon concentration for the 0-5 cm topsoil layer at the queried coordinate, based on SoilGrids global modeled soil data, restricted to validated locations 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-soil-organic-carbon-0-5-cm-03acafcb/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)