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

> HALOWERK Central Land – Austria 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 2026-09-15).

Returns the mean SoilGrids soil organic carbon content for the 0–5 cm surface layer at a given WGS84 coordinate within Austria.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/at-soil-organic-carbon
- 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-austria-soil-organic-carbon-0-5-cm-8ea49aae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LMEMH-7g5DsXnbg9K-rri

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-austria-soil-organic-carbon-0-5-cm-8ea49aae -d '<json body>'
```

Example prompt: What is the mean soil organic carbon content in the 0–5 cm layer at latitude 47.8, longitude 13.05 in Austria?

## When to prefer this

Choose this endpoint when you need point-level soil organic carbon data specifically for Austria, validated against official country boundaries. Prefer it over generic SoilGrids API calls when you need boundary-enforced Austrian coverage and a pay-per-query micropayment model. Use it for agricultural planning, environmental baseline studies, or carbon accounting workflows focused on Austrian land.

## Known failure modes

- Coordinate outside Austria's Natural Earth boundary — request rejected before payment
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Missing required latitude or longitude parameter — request rejected
- Downstream SoilGrids data unavailable for the queried cell — may return null or error

## How this service works

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

## Output

A numeric value representing the mean soil organic carbon content (from SoilGrids) for the 0–5 cm depth layer at the specified coordinate, expressed in standard SoilGrids units (typically g/kg or dg/kg). Only coordinates validated within Austria's Natural Earth boundary are accepted; out-of-bounds requests are rejected before any charge.

## 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-austria-soil-organic-carbon-0-5-cm-8ea49aae/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)