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

> HALOWERK Atlantic Land – Netherlands 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 the Netherlands boundary.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/nl-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-netherlands-soil-clay-fraction-0-5-cm-049b0069
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-At6vb9Xut_oT1qXL-ki7

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-clay-fraction-0-5-cm-049b0069 -d '<json body>'
```

Example prompt: What's the clay fraction in the top 5 cm of soil at latitude 52.37, longitude 4.89 in the Netherlands?

## When to prefer this

Choose this endpoint when you need point-level SoilGrids clay fraction data specifically for Netherlands locations, validated against the official country boundary. It is ideal for agricultural, environmental, or construction use cases where fine-grained topsoil texture data is needed per coordinate without building or maintaining a local SoilGrids pipeline. Prefer it over raw SoilGrids API access when you want boundary-validated, pay-per-query access with no setup overhead.

## Known failure modes

- Coordinate outside Netherlands boundary – request rejected before payment, no result returned
- Coordinate within European bounding box but outside Netherlands polygon – validation failure
- Missing or malformed latitude/longitude – schema validation error
- Latitude or longitude outside European coverage bounds (lat 34–72.5, lon -31.5–40.5) – rejected at input validation
- Service unavailable or upstream SoilGrids data fetch failure – 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 Netherlands; results outside it are rejected before payment.

## Output

A numeric value representing the mean clay fraction (as a percentage or volumetric fraction) for the 0–5 cm topsoil layer at the queried coordinate, sourced from SoilGrids. Coordinates outside the Netherlands boundary are rejected before any charge is incurred.

## 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-clay-fraction-0-5-cm-049b0069/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)