# HALOWERK Eastern Land – Romania Soil Coarse-Fragment Volume (0-5 cm)

> HALOWERK Eastern Land – Romania Soil Coarse-Fragment Volume (0-5 cm) is a paid API for AI agents from ostland.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).

Returns the mean SoilGrids coarse-fragment volume (volumetric %) for the 0-5 cm soil layer at a given WGS84 coordinate within Romania.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/ro-soil-coarse-fragments
- 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-eastern-land-romania-soil-coarse-fragment-volume-0-5-cm-76956ec5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_K0Jfvdj68XZyWwAnkXELF

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-eastern-land-romania-soil-coarse-fragment-volume-0-5-cm-76956ec5 -d '<json body>'
```

Example prompt: What's the mean coarse-fragment volume in the top 5 cm of soil at latitude 45.75, longitude 24.83 in Romania? I need the SoilGrids figure for that spot.

## When to prefer this

Choose this endpoint when you need granular, point-based SoilGrids coarse-fragment volume specifically within Romania at 0-5 cm depth. It is ideal for agricultural planning, land evaluation, or environmental assessment workflows that require validated, pay-per-query access without setting up a full SoilGrids API integration. It is not appropriate for locations outside Romania or for other soil properties such as pH, organic carbon, or clay fraction.

## Known failure modes

- Coordinates outside Romania's Natural Earth boundary are rejected before payment is charged
- Coordinates outside the European coverage range (lat 34–72.5, lon -31.5–40.5) are rejected as invalid input
- No-data areas in the SoilGrids dataset may return null or an error if the queried cell has insufficient observations
- Network or payment gateway timeout may result in a failed transaction with no data returned

## How this service works

Mean SoilGrids coarse-fragment volume for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Romania; results outside it are rejected before payment.

## Output

A numeric value representing the mean volumetric coarse-fragment content (percentage of soil volume occupied by fragments >2 mm) for the 0-5 cm topsoil layer at the queried point, derived from SoilGrids data. Coordinates outside Romania's Natural Earth boundary are rejected and no result is returned.

## 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-eastern-land-romania-soil-coarse-fragment-volume-0-5-cm-76956ec5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ostland.halowerk.com](https://www.zero.xyz/host/ostland.halowerk.com/llms.txt)