# HALOWERK Nordic Land – Finland Soil Silt Fraction (0–5 cm)

> HALOWERK Nordic Land – Finland Soil Silt 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 2026-09-13).

Returns the mean SoilGrids silt fraction for the 0–5 cm depth layer at a given coordinate within Finland, validated against the Natural Earth Finland boundary.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/fi-soil-silt
- 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-silt-fraction-0-5-cm-63435c97
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dYWpnXBV_GMMni6udQIoo

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-silt-fraction-0-5-cm-63435c97 -d '<json body>'
```

Example prompt: What's the mean silt fraction of the topsoil (0–5 cm) at latitude 60.17 and longitude 24.94 in Finland? I need the SoilGrids value for that point.

## When to prefer this

Use this endpoint when you specifically need the SoilGrids mean silt fraction for the surface soil layer (0–5 cm) at a point location within Finland. It is ideal when you need only the silt component (as opposed to sand, clay, or USDA texture class), and when Finland-specific geographic validation is required. For other soil properties at the same location, use the sibling endpoints on nordland.halowerk.com. For locations outside Finland, this endpoint will not serve results.

## Known failure modes

- Coordinate outside Finland boundary — request rejected with a boundary validation error before payment
- Coordinate within European input range but outside Finland polygon — rejected
- Latitude or longitude outside the published European coverage bounds (lat 34–72.5, lon -31.5–40.5) — schema validation error
- No SoilGrids data available for very remote or unmapped Finnish locations — may return null or error
- Network timeout or service unavailability

## How this service works

Mean SoilGrids silt fraction 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 silt fraction value (likely as a percentage or volumetric fraction) for the 0–5 cm soil depth at the queried coordinate within Finland, derived from SoilGrids data. Coordinates outside the Finland 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-finland-soil-silt-fraction-0-5-cm-63435c97/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)