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

> HALOWERK Atlantic Land – Luxembourg Soil Sand 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 sand fraction for the 0-5 cm soil layer at a given coordinate within Luxembourg, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/lu-soil-sand
- 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-sand-fraction-0-5-cm-fd696d11
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CCEzXixjZryTGvxEgY2PB

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-sand-fraction-0-5-cm-fd696d11 -d '<json body>'
```

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

## When to prefer this

Choose this endpoint when you specifically need SoilGrids-derived topsoil sand fraction data for a point location within Luxembourg. It is preferable over general soil APIs when Luxembourg-specific boundary validation is required and you need a cost-effective per-call micro-payment model. Best used for single-point lookups; if you need other soil properties (e.g. organic carbon, cation exchange capacity) or terrain metrics for the same location, sibling endpoints on the same platform cover those.

## Known failure modes

- Coordinate outside Luxembourg boundary: request rejected before payment with a boundary validation error
- Coordinate outside European coverage range (lat 34-72.5, lon -31.5-40.5): schema validation failure
- Malformed or missing latitude/longitude fields: input validation error
- SoilGrids data unavailable for the specific point: may return null or error

## How this service works

Mean SoilGrids sand 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 sand fraction value (likely as a percentage or proportion) for the 0-5 cm topsoil layer at the queried coordinate, derived from SoilGrids data. Returns only for coordinates that fall within the validated Natural Earth boundary of Luxembourg; coordinates outside this area are rejected before any processing or payment.

## 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-sand-fraction-0-5-cm-fd696d11/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)