# HALOWERK Southern Land – Malta Surface Clay Fraction (0-5 cm)

> HALOWERK Southern Land – Malta Surface Clay Fraction (0-5 cm) is a paid API for AI agents from suedland.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 Malta's boundaries.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/mt-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-southern-land-malta-surface-clay-fraction-0-5-cm-aa2e2b4b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PmTzAEgshzoCGs4CHshYH

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-southern-land-malta-surface-clay-fraction-0-5-cm-aa2e2b4b -d '<json body>'
```

Example prompt: What's the mean clay fraction in the top 5 cm of soil at latitude 35.9042, longitude 14.5189 in Malta?

## When to prefer this

Choose this endpoint when you need authoritative SoilGrids clay fraction data specifically for locations within Malta at the 0-5 cm soil depth. It is ideal for precision agriculture, land assessment, construction planning, or environmental research workflows where Malta-scoped soil texture data is required. The built-in boundary validation ensures you are only charged for valid Maltese coordinates.

## Known failure modes

- Coordinate outside Malta boundary — rejected before payment with a validation error
- Latitude or longitude out of the published European coverage range — schema validation error
- Invalid or missing coordinate fields — bad request error
- Service unavailability or upstream SoilGrids data gap — server 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 Malta; results outside it are rejected before payment.

## Output

Returns the mean clay fraction (as a proportion or percentage) of the 0-5 cm soil layer sourced from SoilGrids for the queried point, provided the coordinate falls within the validated Malta boundary. Requests outside Malta are rejected before any charge is applied.

## 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-southern-land-malta-surface-clay-fraction-0-5-cm-aa2e2b4b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from suedland.halowerk.com](https://www.zero.xyz/host/suedland.halowerk.com/llms.txt)