# HALOWERK Atlantic Land – Luxembourg Soil Nitrogen (0–5 cm)

> HALOWERK Atlantic Land – Luxembourg Soil Nitrogen (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 total nitrogen concentration for the 0–5 cm soil layer at a given WGS84 coordinate within Luxembourg.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/lu-soil-nitrogen
- 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-nitrogen-0-5-cm-aed29ca4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Emfeppi9YJ-iVOAPHFnUd

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-nitrogen-0-5-cm-aed29ca4 -d '<json body>'
```

Example prompt: What's the mean total nitrogen 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 need point-level topsoil nitrogen data specifically for locations within Luxembourg, sourced from SoilGrids. It is ideal for agricultural analysis, land valuation, environmental assessments, or any workflow requiring validated soil nutrient data with geographic boundary enforcement for Luxembourg.

## Known failure modes

- Coordinate outside Luxembourg boundary — request is rejected before payment with a geographic validation error
- Coordinate within European bounding box but outside Luxembourg — validation against Natural Earth boundary fails
- Missing or malformed latitude/longitude values — schema validation error
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — input rejected

## How this service works

Mean SoilGrids total nitrogen 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 value representing the mean SoilGrids total nitrogen concentration (g/kg or cg/kg depending on SoilGrids convention) for the 0–5 cm soil layer at the queried coordinate. Coordinates outside Luxembourg's boundary are rejected without a result.

## 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-nitrogen-0-5-cm-aed29ca4/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)