# HALOWERK Atlantic Land – Belgium Soil Clay Fraction (0–5 cm)

> HALOWERK Atlantic Land – Belgium Soil Clay Fraction (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 clay fraction for the 0–5 cm topsoil layer at a given coordinate within Belgium.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/be-soil-clay
- 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-clay-fraction-0-5-cm-571813c8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CuIiPr-Sl7PntPEXqjF8o

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-clay-fraction-0-5-cm-571813c8 -d '<json body>'
```

Example prompt: What's the SoilGrids clay fraction for the top 5 cm of soil at latitude 50.85, longitude 4.35 in Belgium?

## When to prefer this

Choose this endpoint when you specifically need SoilGrids-derived clay fraction data for the topsoil (0–5 cm) at a precise coordinate within Belgium. It is ideal for agricultural planning, soil drainage analysis, construction feasibility, and environmental land classification workflows where clay content at the surface layer is the primary variable. Prefer it over generic soil APIs when you need validated, boundary-constrained results specifically for Belgian territory.

## Known failure modes

- Coordinate outside Belgium's Natural Earth boundary — request rejected with a validation error before charge
- Coordinate within European coverage range but outside Belgium — rejected by boundary check
- Malformed or missing latitude/longitude values — input validation error
- Latitude or longitude outside the published European coverage range (34–72.5°N, -31.5–40.5°E) — schema validation failure
- Service unavailable or upstream SoilGrids data unreachable — server error response

## How this service works

Mean SoilGrids clay fraction 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 clay fraction value (from SoilGrids) for the 0–5 cm topsoil layer at the specified Belgian coordinate, expressed as a percentage or volumetric fraction. Coordinates outside the Belgium 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-clay-fraction-0-5-cm-571813c8/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)