# HALOWERK Baltic Land – Latvia Soil Clay Fraction (0–5 cm)

> HALOWERK Baltic Land – Latvia Soil Clay Fraction (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 clay fraction for the 0–5 cm soil layer at a given WGS84 coordinate within Latvia, validated against the Natural Earth Latvia boundary.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/lv-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-baltic-land-latvia-soil-clay-fraction-0-5-cm-e664f6c4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ysx57d2bBA2RnxOMqUcTD

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-latvia-soil-clay-fraction-0-5-cm-e664f6c4 -d '<json body>'
```

Example prompt: What's the mean clay fraction in the top 5 cm of soil at latitude 56.946 and longitude 24.105 in Latvia? I need the SoilGrids value for that exact point.

## When to prefer this

Choose this endpoint when you need point-level, SoilGrids-derived topsoil clay fraction data specifically for coordinates within Latvia. It is ideal for agricultural, environmental, or geotechnical workflows requiring validated, authoritative soil texture data without needing to query SoilGrids directly. Its geographic validation ensures no erroneous out-of-country results.

## Known failure modes

- Coordinate outside Latvia boundary — request rejected before payment is charged
- Latitude or longitude out of published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Malformed or missing coordinate fields — schema validation error
- Payment failure via x402 protocol — request not processed

## How this service works

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

## Output

A numeric mean clay fraction value (likely as a percentage or volumetric fraction) derived from SoilGrids for the 0–5 cm soil depth at the specified coordinate, returned only if the coordinate falls within Latvia's Natural Earth 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-baltic-land-latvia-soil-clay-fraction-0-5-cm-e664f6c4/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)