# HALOWERK Atlantic Land – France Soil Bulk Density (0-5 cm)

> HALOWERK Atlantic Land – France Soil Bulk Density (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 bulk density for the 0-5 cm soil layer at a given latitude/longitude coordinate within France.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/fr-soil-bulk-density
- 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-france-soil-bulk-density-0-5-cm-6b49e096
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_omCuD02gxWTcoKZ9IstPC

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-france-soil-bulk-density-0-5-cm-6b49e096 -d '<json body>'
```

Example prompt: What's the mean soil bulk density for the 0-5 cm layer at latitude 47.2 and longitude 2.4 in France?

## When to prefer this

Use this endpoint when you need a point-level SoilGrids bulk density value specifically for a location within metropolitan France, particularly when boundary validation is required before incurring cost. Prefer this over raw SoilGrids API access when you want a simple pay-per-call microservice with built-in geographic scope enforcement for France.

## Known failure modes

- Coordinate outside France boundary → request 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
- Invalid or missing coordinate parameters → 400-class error
- Service unavailable or SoilGrids data not available for coordinate → 5xx error

## How this service works

Mean SoilGrids bulk density for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for France; results outside it are rejected before payment.

## Output

A numeric mean bulk density value (g/cm³ or cg/cm³ per SoilGrids convention) for the 0-5 cm soil layer at the requested coordinate, derived from the SoilGrids dataset. Coordinates outside France's Natural Earth boundary are rejected before any charge is incurred.

## 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-france-soil-bulk-density-0-5-cm-6b49e096/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)