# HALOWERK Atlantic Land – Belgium Soil CEC (0-5 cm)

> HALOWERK Atlantic Land – Belgium Soil CEC (0-5 cm) is a paid API for AI agents from atlantikland.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 Belgium.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/be-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-atlantic-land-belgium-soil-cec-0-5-cm-469bd6c0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6rXAkdl1ZPVPO5av0PlNL

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-atlantic-land-belgium-soil-cec-0-5-cm-469bd6c0 -d '<json body>'
```

Example prompt: What's the SoilGrids cation exchange capacity for the topsoil (0-5 cm layer) at latitude 50.85 and longitude 4.35 in Belgium?

## When to prefer this

Use this endpoint when you specifically need surface-layer (0-5 cm) cation exchange capacity data for a point location within Belgium, particularly for agricultural assessment, land valuation, or environmental characterization workflows. It is ideal when you want a pay-per-call microservice without managing SoilGrids API credentials, and when Belgian geographic validation is a useful pre-filter.

## Known failure modes

- Coordinate outside Belgium boundary — request rejected before payment, returns an error indicating the point is out of coverage
- Coordinate within European bounding box but outside Belgium — boundary validation rejects it
- Malformed or missing latitude/longitude fields — validation error returned
- Coordinate outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — input schema violation

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

## Output

A numeric mean cation exchange capacity (CEC) value for the 0-5 cm soil layer at the queried coordinate, derived from SoilGrids data. Coordinates outside Belgium's Natural Earth boundary are rejected before payment is processed.

## 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-atlantic-land-belgium-soil-cec-0-5-cm-469bd6c0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from atlantikland.halowerk.com](https://www.zero.xyz/host/atlantikland.halowerk.com/llms.txt)