# HALOWERK Atlantic Land – Netherlands Soil Coarse-Fragment Volume (0-5 cm)

> HALOWERK Atlantic Land – Netherlands Soil Coarse-Fragment Volume (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 coarse-fragment volume (%) for the 0-5 cm soil layer at a given WGS84 coordinate within the Netherlands boundary.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/nl-soil-coarse-fragments
- 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-netherlands-soil-coarse-fragment-volume-0-5-cm-039b2d4c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GYAcTbCIVWoa4_AG0jItE

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-netherlands-soil-coarse-fragment-volume-0-5-cm-039b2d4c -d '<json body>'
```

Example prompt: What's the coarse-fragment volume in the top 0-5 cm soil layer at latitude 52.37, longitude 4.89 in the Netherlands?

## When to prefer this

Choose this endpoint when you need point-level coarse-fragment volume data specifically for locations within the Netherlands, validated against official boundaries. It is ideal for soil characterisation, land suitability analysis, or environmental assessments requiring the SoilGrids 0-5 cm layer metric. Prefer it over generic soil APIs when boundary validation and per-call micropayment pricing are acceptable and the target geography is the Netherlands.

## Known failure modes

- Coordinate outside Netherlands boundary — request rejected before processing
- Latitude or longitude outside allowed European input range (lat 34–72.5, lon -31.5–40.5) — validation error
- Invalid or missing coordinate fields — schema validation failure
- Payment failure or insufficient USDC balance — x402 payment required error
- Service unavailable or upstream SoilGrids data error — 5xx response

## How this service works

Mean SoilGrids coarse-fragment volume for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Netherlands; results outside it are rejected before payment.

## Output

A numeric value representing the mean volumetric percentage of coarse fragments (particles > 2 mm) in the 0-5 cm topsoil layer at the requested coordinate, sourced from SoilGrids. The coordinate is validated against the Netherlands boundary before any result is returned; out-of-boundary requests are rejected.

## 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-netherlands-soil-coarse-fragment-volume-0-5-cm-039b2d4c/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)