# HALOWERK Southern Land – Italy Soil Cation Exchange Capacity (0-5 cm)

> HALOWERK Southern Land – Italy Soil Cation Exchange Capacity (0-5 cm) is a paid API for AI agents from suedland.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).

Returns the mean SoilGrids cation exchange capacity (CEC) for the 0–5 cm soil layer at a given WGS84 coordinate, validated against the Natural Earth boundary for Italy.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/it-soil-cec
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-southern-land-italy-soil-cation-exchange-capacity-0-5-cm-91d78cb0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9vnNKrIByE67wBrcG_ZEJ

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-southern-land-italy-soil-cation-exchange-capacity-0-5-cm-91d78cb0 -d '<json body>'
```

Example prompt: What is the mean soil cation exchange capacity for the 0–5 cm layer at latitude 43.77, longitude 11.25 in Italy? I need the SoilGrids CEC value for that exact point.

## When to prefer this

Choose this endpoint when you specifically need topsoil cation exchange capacity (CEC) data for a point location within Italy, sourced from SoilGrids. It is ideal for agricultural analysis, land valuation, soil fertility studies, or precision farming workflows focused on Italy. Prefer it over generic soil APIs when you need Italy-validated, SoilGrids-derived CEC at the 0–5 cm depth specifically; use sibling endpoints on the same provider for other soil properties (sand fraction, texture class) or land cover metrics at the same coordinate.

## Known failure modes

- Coordinate outside Italy boundary – request rejected before payment is charged
- Latitude or longitude out of the published European coverage range (lat 34–72.5, lon -31.5–40.5) – validation error
- Invalid or malformed coordinate values – input schema rejection
- Payment failure via x402 protocol – call not executed
- SoilGrids upstream data unavailable for the specific location – null or error 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 Italy; 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 topsoil layer at the specified Italian coordinate. Returns an error or rejection if the coordinate falls outside Italy'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-southern-land-italy-soil-cation-exchange-capacity-0-5-cm-91d78cb0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from suedland.halowerk.com](https://www.zero.xyz/host/suedland.halowerk.com/llms.txt)