# HALOWERK Baltic Land – Estonia Soil Bulk Density (0–5 cm)

> HALOWERK Baltic Land – Estonia Soil Bulk Density (0–5 cm) is a paid API for AI agents from baltikum.halowerk.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-15).

Returns the mean SoilGrids bulk density for the 0–5 cm soil layer at a given coordinate within Estonia, validated against the Natural Earth boundary.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/ee-soil-bulk-density
- 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-baltic-land-estonia-soil-bulk-density-0-5-cm-18a51d58
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PKe4o_KDX4wEXmDT89_Oz

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-baltic-land-estonia-soil-bulk-density-0-5-cm-18a51d58 -d '<json body>'
```

Example prompt: What's the mean soil bulk density for the top 5 centimeters of soil at latitude 58.37, longitude 26.72 in Estonia?

## When to prefer this

Use this endpoint when you need precise SoilGrids-derived topsoil bulk density data specifically for a point location within Estonia. It is ideal for agricultural planning, environmental assessments, or geospatial data enrichment workflows requiring validated, pay-per-query soil physical property data for the Estonian jurisdiction. Prefer this over generic SoilGrids API access when you need boundary-validated, per-call micropayment access without managing broader API credentials.

## Known failure modes

- Coordinate outside Estonian boundary — rejected before payment with a boundary validation error
- Latitude or longitude out of European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Invalid or missing coordinate fields — 400 Bad Request
- Payment failure via x402 protocol — request not processed

## How this service works

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

## Output

A mean bulk density value (g/cm³ or kg/dm³) for the 0–5 cm soil layer at the requested coordinate, sourced from SoilGrids, after the coordinate has been validated as falling within Estonian territory.

## 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-baltic-land-estonia-soil-bulk-density-0-5-cm-18a51d58/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from baltikum.halowerk.com](https://www.zero.xyz/host/baltikum.halowerk.com/llms.txt)