# HALOWERK Central Land – Czechia Soil Bulk Density (0-5 cm)

> HALOWERK Central Land – Czechia Soil Bulk Density (0-5 cm) is a paid API for AI agents from mitteleuropa.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 within Czechia, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://mitteleuropa.halowerk.com/v1/cz-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-central-land-czechia-soil-bulk-density-0-5-cm-3a4ec8d6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cDWPkkzxyfhoHx5L30W4e

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-central-land-czechia-soil-bulk-density-0-5-cm-3a4ec8d6 -d '<json body>'
```

Example prompt: What's the mean SoilGrids bulk density for the top 5 cm of soil at latitude 49.74, longitude 13.38 in Czechia?

## When to prefer this

Use this endpoint when you specifically need topsoil (0-5 cm) bulk density data for a location within Czechia, sourced from the SoilGrids global soil dataset. It is ideal for agricultural planning, environmental assessment, geotechnical surveys, and soil carbon studies focused on the Czech Republic. Prefer it over generic soil APIs when you need the boundary-validated, pay-per-call SoilGrids value for a precise coordinate rather than a country-level average.

## Known failure modes

- Coordinate outside Czechia boundary — request rejected before payment with a boundary validation error
- Latitude or longitude outside the declared European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Missing required latitude or longitude fields — 400 Bad Request
- Coordinate within European range but outside Czechia polygon — explicit rejection with no charge
- Service or SoilGrids upstream unavailability — 503 or timeout error

## How this service works

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

## Output

Returns the mean SoilGrids bulk density value (in kg/dm³ or cg/cm³ depending on SoilGrids conventions) for the 0-5 cm topsoil layer at the queried coordinate. Coordinates outside the Czechia boundary as defined by Natural Earth 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-central-land-czechia-soil-bulk-density-0-5-cm-3a4ec8d6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mitteleuropa.halowerk.com](https://www.zero.xyz/host/mitteleuropa.halowerk.com/llms.txt)