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

> HALOWERK Atlantic Land – Luxembourg 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 depth layer at a given coordinate validated within Luxembourg's borders.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/lu-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-luxembourg-soil-clay-fraction-0-5-cm-bcb78289
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rY1I25tFrOFWWepOM9eCX

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-luxembourg-soil-clay-fraction-0-5-cm-bcb78289 -d '<json body>'
```

Example prompt: What's the mean clay fraction in the top 5 cm of soil at latitude 49.6116, longitude 6.1319 in Luxembourg?

## When to prefer this

Use this endpoint when you need authoritative SoilGrids clay fraction data for the top 5 cm of soil at a specific point in Luxembourg and need boundary validation built in. Prefer this over generic soil APIs when Luxembourg-specific validation (Natural Earth boundary enforcement) is required, or when working in a micropayment x402 agent workflow where per-call pricing is acceptable.

## Known failure modes

- Coordinate outside Luxembourg boundary — request rejected before payment with a boundary validation error
- Latitude or longitude outside the European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Coordinate within European range but outside Luxembourg — rejected by Natural Earth boundary check
- Network or upstream SoilGrids data unavailability — service 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 Luxembourg; results outside it are rejected before payment.

## Output

A numeric mean clay fraction value (from SoilGrids) for the 0–5 cm soil depth at the queried coordinate, confirmed to fall within Luxembourg's Natural Earth boundary. Coordinates outside Luxembourg are rejected before the charge is applied.

## 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-luxembourg-soil-clay-fraction-0-5-cm-bcb78289/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)