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

> HALOWERK Nordic Land – Finland Soil Organic Carbon (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 2026-09-13).

Returns the mean SoilGrids organic carbon content for the 0-5 cm soil layer at a given coordinate within Finland.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/fi-soil-organic-carbon
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-nordic-land-finland-soil-organic-carbon-0-5-cm-c3d6e7f8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zDGh-275gyi3FgapaPWT4

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-finland-soil-organic-carbon-0-5-cm-c3d6e7f8 -d '<json body>'
```

Example prompt: What's the mean organic carbon content in the top 5 cm of soil at latitude 61.5, longitude 25.7 in Finland?

## When to prefer this

Use this endpoint when you need point-level SoilGrids organic carbon data specifically for locations within Finland. It is ideal for agricultural assessments, carbon accounting, environmental baseline reports, and land-use analysis within Finnish territory. Prefer it over generic SoilGrids API access when you need boundary-validated, pay-per-call simplicity with no API key management. It pairs well with sibling endpoints on the same platform (clay, silt, sand fractions, pH, texture class) for comprehensive Finnish soil profiling.

## Known failure modes

- Coordinate outside Finland's Natural Earth boundary — request rejected with a boundary validation error before payment
- Coordinate within European coverage bounding box but outside Finland — rejected at country-level validation
- Missing or malformed latitude/longitude — returns input validation error
- Coordinate in a body of water or unmapped area — may return null or no-data value
- Service unavailable or upstream SoilGrids data not accessible — returns server error

## How this service works

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

## Output

A numeric value representing the mean SoilGrids organic carbon content (g/kg or dg/kg, per SoilGrids convention) for the 0-5 cm depth layer at the queried Finnish coordinate. Coordinates outside Finland's Natural Earth boundary are rejected before any payment is processed.

## 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-finland-soil-organic-carbon-0-5-cm-c3d6e7f8/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)