# HALOWERK Nordic Land – Norway Soil Sand Fraction (0-5 cm)

> HALOWERK Nordic Land – Norway Soil Sand Fraction (0-5 cm) is a paid API for AI agents from nordland.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).

Returns the mean SoilGrids sand fraction for the 0-5 cm topsoil layer at a given coordinate within Norway's boundary.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/no-soil-sand
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-nordic-land-norway-soil-sand-fraction-0-5-cm-cc7ce9cc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NYoG0gQcUKaBwdhcMhLKr

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-nordic-land-norway-soil-sand-fraction-0-5-cm-cc7ce9cc -d '<json body>'
```

Example prompt: What's the mean sand fraction in the top 5 cm of soil at latitude 59.91 and longitude 10.75 in Norway?

## When to prefer this

Use this endpoint when you need a specific topsoil sand fraction value for a point location within Norway and want boundary-validated, pay-per-call access to SoilGrids data without managing bulk downloads. Prefer it over manual SoilGrids API access when operating in an agentic micropayment workflow. Choose sibling endpoints on the same host for clay fraction, pH, organic carbon, or texture class instead of trying to infer those from sand fraction alone.

## Known failure modes

- Coordinate outside Norway boundary: request rejected with an error before payment is processed
- Coordinate outside European coverage bounds (lat 34–72.5, lon -31.5–40.5): validation error
- Missing latitude or longitude field: schema validation failure
- Coordinate in sea or non-land area within bounding box: may be rejected or return null
- Network timeout: no result returned, retry recommended

## How this service works

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

## Output

A numeric value representing the mean sand fraction (as a volume percentage or g/kg proportion per SoilGrids conventions) for the 0-5 cm topsoil layer at the queried coordinate. Requests with coordinates outside Norway'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-nordic-land-norway-soil-sand-fraction-0-5-cm-cc7ce9cc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nordland.halowerk.com](https://www.zero.xyz/host/nordland.halowerk.com/llms.txt)