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

> HALOWERK Atlantic Land – France 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 France, validated against the Natural Earth France boundary.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/fr-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-france-soil-sand-fraction-0-5-cm-4807f3c4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7zFperG252jeHw-2yZrnv

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-sand-fraction-0-5-cm-4807f3c4 -d '<json body>'
```

Example prompt: What's the mean sand fraction in the top 0-5 cm of soil at latitude 47.3 and longitude 2.1 in France? I need the SoilGrids value for a land assessment.

## When to prefer this

Choose this endpoint when you need soil sand fraction specifically for locations within France at the 0-5 cm depth from the SoilGrids dataset. It is ideal for agricultural suitability analysis, soil texture characterization, land use planning, or environmental baseline work scoped to France. It is distinct from organic carbon, CEC, or slope/gradient endpoints available on the same platform.

## Known failure modes

- Coordinate outside France boundary: request is rejected before payment with a boundary validation error
- Latitude or longitude out of European coverage range (lat 34–72.5, lon -31.5–40.5): validation error
- Malformed or missing coordinate fields: schema validation error
- SoilGrids data unavailable for the specific point: no-data response

## How this service works

Mean SoilGrids sand fraction 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 value representing the mean sand fraction (as measured by SoilGrids) in the 0-5 cm topsoil layer at the requested coordinate. Only returned for coordinates that fall within France's Natural Earth boundary; coordinates outside 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-sand-fraction-0-5-cm-4807f3c4/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)