# HALOWERK Central Land – Liechtenstein Soil CEC (0-5 cm)

> HALOWERK Central Land – Liechtenstein Soil CEC (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 coordinate within Liechtenstein.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/li-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-liechtenstein-soil-cec-0-5-cm-86fe5ba5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TNecuSjaiePz4M_5H3xKx

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-liechtenstein-soil-cec-0-5-cm-86fe5ba5 -d '<json body>'
```

Example prompt: What is the mean cation exchange capacity of the topsoil (0-5 cm) at latitude 47.14, longitude 9.52 in Liechtenstein?

## When to prefer this

Use this endpoint when you need point-level SoilGrids CEC data specifically for a location within Liechtenstein, with guaranteed boundary validation before billing. Prefer it over general SoilGrids APIs when you want a pay-per-call micro-service that rejects out-of-bounds coordinates without charging you. Choose sibling endpoints on the same host for other soil properties (pH, silt) or terrain metrics at the same Liechtenstein coordinate.

## Known failure modes

- Coordinate outside Liechtenstein boundary: request rejected before payment, with a boundary validation error
- Coordinate outside European coverage range (lat 34–72.5, lon -31.5–40.5): schema validation error
- Missing or malformed latitude/longitude: 400 Bad Request
- Service unavailable or upstream SoilGrids data gap: 5xx error or null response

## 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 Liechtenstein; results outside it are rejected before payment.

## Output

A numeric mean cation exchange capacity value (in cmolc/kg) from SoilGrids for the 0-5 cm depth layer at the queried coordinate, validated to fall within the Liechtenstein boundary. Coordinates outside the country 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-liechtenstein-soil-cec-0-5-cm-86fe5ba5/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)