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

> HALOWERK Atlantic Land – Netherlands 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 2026-09-13).

Returns the mean SoilGrids pH in H2O for the 0–5 cm soil layer at a given WGS84 coordinate within the Netherlands boundary.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/nl-soil-ph
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-atlantic-land-netherlands-soil-ph-0-5-cm-5f659d2e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jGt4R2khPoVmP9eafMkbo

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-ph-0-5-cm-5f659d2e -d '<json body>'
```

Example prompt: What's the mean soil pH in H2O for the top 5 cm at latitude 52.09 and longitude 5.12 in the Netherlands? I need the SoilGrids value for that surface layer.

## When to prefer this

Use this endpoint when you need SoilGrids surface-layer (0–5 cm) soil pH specifically for a point location within the Netherlands and need per-call micro-payment billing via x402. Prefer it over generic soil APIs when you need Netherlands boundary enforcement, SoilGrids provenance, and H2O-method pH at this exact depth increment.

## Known failure modes

- Coordinate outside Netherlands boundary — rejected before payment, with a boundary validation error
- Latitude or longitude outside European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Missing required latitude or longitude parameter — request error
- Network or upstream SoilGrids data unavailability — service 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 Netherlands; results outside it are rejected before payment.

## Output

A numeric mean soil pH in H2O value (SoilGrids) for the 0–5 cm depth layer at the queried coordinate, assuming the point falls within the validated Netherlands boundary. Coordinates outside the boundary are rejected before payment is processed.

## 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-ph-0-5-cm-5f659d2e/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)