# HALOWERK Baltic Land – Germany Soil Silt Fraction (0-5 cm)

> HALOWERK Baltic Land – Germany Soil Silt Fraction (0-5 cm) is a paid API for AI agents from baltikum.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).

Returns the mean SoilGrids silt fraction for the 0-5 cm soil layer at a given WGS84 coordinate within Germany, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/de-soil-silt
- 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-baltic-land-germany-soil-silt-fraction-0-5-cm-79ee85ab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hZ8A-0giqVGYJfXgm4aoH

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-baltic-land-germany-soil-silt-fraction-0-5-cm-79ee85ab -d '<json body>'
```

Example prompt: What is the SoilGrids silt fraction in the top 0-5 cm of soil at latitude 51.5, longitude 10.2 in Germany?

## When to prefer this

Choose this endpoint when you need point-level soil silt fraction data specifically for locations within Germany, sourced from SoilGrids at the 0-5 cm topsoil layer. It is ideal for agricultural analysis, soil texture profiling, land suitability assessments, and environmental baseline studies in Germany. Prefer this over generic SoilGrids APIs when you need boundary-validated, pay-per-call access without managing your own SoilGrids API credentials. It pairs naturally with sibling endpoints on the same host for bulk density, clay fraction, and coarse-fragment data.

## Known failure modes

- Coordinate outside Germany boundary: request rejected before payment with a boundary validation error
- Coordinate within European coverage but outside Germany: rejected by Natural Earth boundary check
- Latitude or longitude out of the accepted European range (lat 34–72.5, lon -31.5–40.5): input validation error
- No SoilGrids data available for the queried point (sparse coverage areas): may return null or error
- Malformed input (non-numeric coordinates): schema validation error

## How this service works

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

## Output

A numeric mean silt fraction value (typically expressed as g/kg or percentage) for the 0-5 cm soil depth at the queried coordinate, sourced from SoilGrids. Coordinates outside Germany's Natural Earth boundary are rejected before processing.

## 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-baltic-land-germany-soil-silt-fraction-0-5-cm-79ee85ab/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from baltikum.halowerk.com](https://www.zero.xyz/host/baltikum.halowerk.com/llms.txt)