# HALOWERK Nordic Land – Soil Organic Carbon (0-5 cm, Norway)

> HALOWERK Nordic Land – Soil Organic Carbon (0-5 cm, Norway) 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 organic carbon content for the 0-5 cm topsoil layer at a given WGS84 coordinate within Norway.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/no-soil-organic-carbon
- 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-soil-organic-carbon-0-5-cm-norway-043f017d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mJxwyeErhRwRuqOvF4RJw

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-soil-organic-carbon-0-5-cm-norway-043f017d -d '<json body>'
```

Example prompt: What's the mean soil organic carbon in the top 5 cm at latitude 59.91 and longitude 10.75 in Norway? I need the SoilGrids value for that exact spot.

## When to prefer this

Choose this endpoint when you need point-level mean soil organic carbon for the 0-5 cm topsoil layer at a specific coordinate within Norway, backed by SoilGrids data. It is ideal for agricultural assessment, carbon accounting, environmental baseline studies, or land-use analysis in Norway. Prefer it over generic soil databases when you need Norway-validated, pay-per-call precision without managing bulk dataset downloads.

## Known failure modes

- Coordinate outside Norway's Natural Earth boundary — request rejected before payment is processed
- Latitude or longitude out of the published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Missing required latitude or longitude parameter — schema validation failure
- Coordinate in the sea or on a non-Norwegian landmass within the bounding box — boundary rejection
- Service unavailable or upstream SoilGrids data gap — error response with no result

## How this service works

Mean SoilGrids organic carbon 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 SoilGrids organic carbon content (g/kg or dg/kg) for the 0-5 cm topsoil layer at the validated Norwegian coordinate. Coordinates outside Norway's Natural Earth boundary are rejected before the response is returned.

## 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-soil-organic-carbon-0-5-cm-norway-043f017d/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)