# HALOWERK Eastern Land – Hungary Soil Clay Fraction (0-5 cm)

> HALOWERK Eastern Land – Hungary Soil Clay Fraction (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 clay fraction for the 0–5 cm soil layer at a given coordinate within Hungary, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://ostland.halowerk.com/v1/hu-soil-clay
- 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-hungary-soil-clay-fraction-0-5-cm-383a618a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IPezrOgGP9ntQGUPXwKMv

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-hungary-soil-clay-fraction-0-5-cm-383a618a -d '<json body>'
```

Example prompt: What's the mean clay fraction in the top 0–5 cm of soil at latitude 47.5 and longitude 19.0 in Hungary?

## When to prefer this

Choose this endpoint when you need point-specific soil clay fraction data for the 0–5 cm topsoil layer at a coordinate known to be within Hungary, and you want boundary-validated results backed by SoilGrids data. It is ideal for agricultural analysis, land suitability studies, or environmental research in Hungary specifically. Prefer sibling endpoints on the same host for other soil properties (silt, CEC) or terrain metrics.

## Known failure modes

- Coordinate outside Hungary's Natural Earth boundary — request rejected before payment
- Latitude or longitude outside the declared European coverage range (34–72.5°N, -31.5–40.5°E) — schema validation failure
- Missing required latitude or longitude parameter — validation error
- Network timeout or upstream SoilGrids data unavailability — service error

## How this service works

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

## Output

A numeric value representing the mean SoilGrids clay fraction (likely as g/kg or percentage) for the 0–5 cm soil depth at the queried coordinate, or a rejection response if the coordinate falls outside Hungary's validated boundary.

## 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-hungary-soil-clay-fraction-0-5-cm-383a618a/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)