# HALOWERK Nordic Land – Finland Soil Bulk Density (0-5 cm)

> HALOWERK Nordic Land – Finland Soil Bulk Density (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 bulk density for the 0–5 cm topsoil layer at a given coordinate within Finland, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/fi-soil-bulk-density
- 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-finland-soil-bulk-density-0-5-cm-ed467dcb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ksytvZtLkdIQm6KzyNsOl

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-bulk-density-0-5-cm-ed467dcb -d '<json body>'
```

Example prompt: What's the mean soil bulk density for the top 5 centimeters at latitude 60.1699, longitude 24.9384 in Finland?

## When to prefer this

Choose this endpoint when you need SoilGrids bulk density specifically for a point within Finland and want built-in boundary validation so out-of-country coordinates are caught early. It is a cost-effective per-call micro-API ideal for agents enriching geospatial records, environmental assessments, or agricultural models with Finnish topsoil physical properties. Prefer sibling endpoints on the same host for other soil properties (sand fraction, clay, pH, organic carbon) or other countries.

## Known failure modes

- Coordinate outside Finland boundary — request rejected before payment with a validation error
- Latitude or longitude out of the declared European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation failure
- No SoilGrids data available for the queried cell — may return null or an error response
- Malformed request body — missing or non-numeric latitude/longitude fields
- Payment failure — x402 payment not completed, request not processed

## How this service works

Mean SoilGrids bulk density 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 mean bulk density value (g/cm³ or kg/dm³) for the 0–5 cm topsoil layer at the queried coordinate, sourced from SoilGrids and validated to lie within Finland's Natural Earth boundary. Coordinates outside Finland 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-finland-soil-bulk-density-0-5-cm-ed467dcb/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)