# HALOWERK Baltic Land – Germany Soil Bulk Density (0-5 cm)

> HALOWERK Baltic Land – Germany Soil Bulk Density (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 bulk density for the 0–5 cm topsoil layer at a given WGS84 coordinate validated within Germany's boundary.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/de-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-baltic-land-germany-soil-bulk-density-0-5-cm-4e399f25
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jDp3czVhQwuDU5a6_fba9

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-bulk-density-0-5-cm-4e399f25 -d '<json body>'
```

Example prompt: What's the mean SoilGrids bulk density of the topsoil (0–5 cm) at latitude 52.52, longitude 13.405 in Germany?

## When to prefer this

Choose this endpoint when you need a fast, cheap, single-point lookup of SoilGrids topsoil bulk density specifically for a location in Germany, especially when integrating soil physical properties into agricultural, environmental, or construction workflows. It is distinct from the sibling endpoints for clay fraction, sand fraction, coarse fragments, or terrain metrics on the same platform.

## Known failure modes

- Coordinate outside Germany boundary: request rejected before payment is processed
- Latitude or longitude out of the accepted European coverage range (lat 34–72.5, lon -31.5–40.5): validation error
- Malformed or missing coordinate values: input validation failure
- Payment failure via x402 protocol: 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 Germany; 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 requested coordinate, sourced from SoilGrids, returned only if the coordinate falls within the Natural Earth boundary of Germany.

## 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-bulk-density-0-5-cm-4e399f25/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)