# HALOWERK Nordic Land – Norway Soil Coarse-Fragment Volume (0–5 cm)

> HALOWERK Nordic Land – Norway Soil Coarse-Fragment Volume (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 2026-09-15).

Returns the mean SoilGrids coarse-fragment volume (%) for the 0–5 cm soil layer at a given WGS84 coordinate validated to fall within Norway's boundary.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/no-soil-coarse-fragments
- 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-nordic-land-norway-soil-coarse-fragment-volume-0-5-cm-8f3803f9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tzKmY5BMPygJW4fjGXzxV

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-coarse-fragment-volume-0-5-cm-8f3803f9 -d '<json body>'
```

Example prompt: What's the mean coarse-fragment volume in the top 5 cm of soil at latitude 59.91 and longitude 10.75 in Norway? I need the SoilGrids figure for that point.

## When to prefer this

Use this endpoint when you need point-level coarse-fragment (rock/gravel) content for the near-surface soil layer (0–5 cm) at a specific Norwegian location, especially in workflows involving soil characterisation, land suitability analysis, agricultural planning, or environmental baseline reporting. Prefer it over generic soil APIs when boundary enforcement within Norway is required and when SoilGrids provenance is acceptable. Not suitable for locations outside Norway or for deeper soil horizons.

## Known failure modes

- Coordinate outside Norway boundary: request is rejected with a validation error and no charge is made
- Coordinate within European coverage bounds but outside Norway: boundary check fails, rejected
- Latitude or longitude out of the declared European range (lat 34–72.5, lon -31.5–40.5): schema validation error
- Missing latitude or longitude parameter: request rejected with a schema/validation error
- SoilGrids upstream data unavailable for queried cell: may return null or an error response

## How this service works

Mean SoilGrids coarse-fragment volume 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 volumetric coarse-fragment content (%) of the 0–5 cm soil layer at the queried coordinate, sourced from SoilGrids. Coordinates outside Norway's Natural Earth boundary 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-nordic-land-norway-soil-coarse-fragment-volume-0-5-cm-8f3803f9/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)