# HALOWERK Southern Land – Malta Soil Bulk Density (0-5 cm)

> HALOWERK Southern Land – Malta Soil Bulk Density (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 2026-09-13).

Returns mean SoilGrids bulk density for the 0-5 cm soil layer at a given coordinate within Malta, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://suedland.halowerk.com/v1/mt-soil-bulk-density
- 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-bulk-density-0-5-cm-2294fce0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Zna-Jl2mWgkagACfSqSwi

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-bulk-density-0-5-cm-2294fce0 -d '<json body>'
```

Example prompt: What's the mean soil bulk density for the top 5 cm at latitude 35.90, longitude 14.51 in Malta?

## When to prefer this

Choose this endpoint when you need point-level SoilGrids bulk density data specifically within Malta and want automatic boundary validation to avoid wasted calls. It is purpose-built for Malta coverage and rejects out-of-bounds coordinates before charging, making it cost-efficient for Malta-scoped workflows. Prefer this over generic soil APIs when you need fast, pay-per-call access to surface bulk density without managing a full SoilGrids API integration.

## Known failure modes

- Coordinate outside Malta's Natural Earth boundary — request rejected before payment with a validation error
- Latitude or longitude out of the published European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Missing or malformed coordinate inputs — 400-level error
- Service unavailable or upstream SoilGrids data outage — 5xx 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 Malta; results outside it are rejected before payment.

## Output

Returns the mean SoilGrids bulk density value (kg/dm³ or g/cm³) for the 0-5 cm topsoil layer at the specified coordinate within Malta. Coordinates outside the Malta boundary as defined by Natural Earth 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-soil-bulk-density-0-5-cm-2294fce0/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)