# HALOWERK Central Land – Austria Soil Cation Exchange Capacity (0-5 cm)

> HALOWERK Central Land – Austria Soil Cation Exchange Capacity (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 cation exchange capacity (CEC) for the 0–5 cm soil layer at a given WGS84 coordinate within Austria.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/at-soil-cec
- 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-cation-exchange-capacity-0-5-cm-4096928f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0ieIGpODGBFW-EMNjtC6h

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-cation-exchange-capacity-0-5-cm-4096928f -d '<json body>'
```

Example prompt: What's the mean cation exchange capacity of the topsoil (0–5 cm) at latitude 47.35, longitude 13.82 in Austria? I need the SoilGrids CEC value for that exact point.

## When to prefer this

Choose this endpoint when you specifically need surface-layer (0–5 cm) soil cation exchange capacity data for a location in Austria, sourced from the SoilGrids global dataset. It is ideal for precision agriculture, land suitability analysis, or environmental characterization workflows scoped to Austrian territory. Prefer it over generic soil APIs when you need CEC specifically (not pH, texture, or other soil properties) and when boundary-validated Austrian data is required.

## Known failure modes

- Coordinate outside Austria's Natural Earth boundary — request rejected before payment is processed
- Latitude or longitude out of the published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Missing required latitude or longitude parameter — schema validation failure
- Point is within Europe but outside Austria — rejected by country boundary check

## How this service works

Mean SoilGrids cation exchange capacity 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 mean cation exchange capacity value (cmolc/kg) from the SoilGrids dataset for the 0–5 cm soil horizon at the queried coordinate, valid only if the point falls within Austria'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-austria-soil-cation-exchange-capacity-0-5-cm-4096928f/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)