# HALOWERK Southern Land – Malta Soil Sand Fraction

> HALOWERK Southern Land – Malta Soil Sand Fraction is a paid API for AI agents from suedland.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-13).

Returns the mean SoilGrids sand fraction (g/kg) for the 0–5 cm topsoil layer at a given coordinate within Malta.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/mt-soil-sand
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-southern-land-malta-soil-sand-fraction-ded460b3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_08q9eyyfJlT-MEOPQQboA

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-soil-sand-fraction-ded460b3 -d '<json body>'
```

Example prompt: What's the SoilGrids sand fraction in the 0–5 cm topsoil layer at latitude 35.89, longitude 14.45 in Malta?

## When to prefer this

Choose this endpoint when you need point-specific SoilGrids sand fraction data for locations within Malta, with built-in boundary validation that ensures you are billed only for valid in-territory queries. Prefer it over generic SoilGrids API access when operating in a Malta-scoped workflow or when you need a pay-per-call microservice with x402 payment support. It is ideal for agricultural planning, soil characterisation pipelines, and land-use analysis focused on Malta.

## Known failure modes

- Coordinate outside Malta's Natural Earth boundary — request rejected before payment, returns boundary validation error
- Coordinate within the European coverage envelope but outside Malta — rejected with geographic validation error
- Malformed latitude/longitude values outside allowed ranges (lat 34–72.5, lon -31.5–40.5) — schema validation error
- SoilGrids upstream data unavailable or no data for the queried pixel — returns null or error response
- Network timeout or service unavailability — returns 5xx error

## How this service works

Mean SoilGrids sand 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 sand fraction value (in g/kg or percentage) for the 0–5 cm topsoil layer from SoilGrids at the validated Maltese coordinate. The coordinate is checked against the Natural Earth boundary for Malta before the result is delivered; requests falling outside Malta's boundary are rejected prior to payment processing.

## 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-soil-sand-fraction-ded460b3/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)