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

> HALOWERK Atlantic Land – Luxembourg Soil pH (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 pH in H2O for the 0–5 cm topsoil layer at a given WGS84 coordinate within Luxembourg.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/lu-soil-ph
- 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-ph-0-5-cm-49f66cf7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TRSZCkXe2RLQm1cU6TRW-

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-ph-0-5-cm-49f66cf7 -d '<json body>'
```

Example prompt: What's the mean topsoil pH (0–5 cm layer) at latitude 49.6116, longitude 6.1319 in Luxembourg?

## When to prefer this

Use this endpoint when you need a single topsoil pH lookup specifically within Luxembourg territory and want a pay-per-call model without a subscription. Prefer it over bulk SoilGrids API access when you only need spot checks for Luxembourg coordinates, or when integrating into an agent workflow that uses x402 micropayments. It is not suitable for coordinates outside Luxembourg, other soil depth layers, or soil properties other than pH.

## Known failure modes

- Coordinate outside Luxembourg boundary: request rejected with a validation error before payment
- Coordinate within European bounding box but outside Luxembourg polygon: rejected at boundary check
- Latitude or longitude outside the declared European coverage range (34–72.5°N, –31.5–40.5°E): schema validation error
- SoilGrids data unavailable or no-data cell at coordinate: may return null or error response
- Malformed JSON body or missing required fields: 400-level error

## How this service works

Mean SoilGrids pH in H2O 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 soil pH value (in H2O) for the 0–5 cm topsoil layer at the specified coordinate, derived from SoilGrids global soil data. The coordinate must fall within the Luxembourg national boundary; requests outside this area are rejected before any 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-ph-0-5-cm-49f66cf7/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)