# HALOWERK Baltic Land – Poland Soil Texture Classifier

> HALOWERK Baltic Land – Poland Soil Texture Classifier 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 USDA soil texture class (e.g. sandy loam, clay) for a given coordinate in Poland, derived from SoilGrids sand, silt, and clay fractions.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/pl-soil-texture
- 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-poland-soil-texture-classifier-8c721c07
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2o-a42Lp-yLspy96J24Lt

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-poland-soil-texture-classifier-8c721c07 -d '<json body>'
```

Example prompt: What's the USDA soil texture class at latitude 52.23, longitude 21.01 in Poland — is it sandy loam, clay, or something else?

## When to prefer this

Use this endpoint when you need a single-point USDA soil texture classification for a location in Poland and want the coordinate validated against Poland's boundary before billing. Prefer it over raw SoilGrids API calls when you need boundary-validated, pay-per-call pricing with no subscription, or when working within an x402 payment workflow. Choose sibling endpoints on the same host when you need related soil properties (bulk density, clay fraction, coarse fragments) at the same location.

## Known failure modes

- Coordinate outside Poland boundary — request rejected with a boundary validation error and no charge incurred
- Coordinate outside the declared European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- SoilGrids data unavailable or missing for the requested cell — may return null texture class or upstream error
- Malformed or missing latitude/longitude fields — input validation error
- Payment failure (x402) — request not processed

## How this service works

USDA texture class calculated from SoilGrids sand, silt and clay fractions. The coordinate is validated against the Natural Earth boundary for Poland; results outside it are rejected before payment.

## Output

Returns the USDA soil texture class (e.g. 'Sandy Loam', 'Clay', 'Silty Clay Loam') derived from SoilGrids sand, silt, and clay fraction values for the queried coordinate within Poland's boundary. Coordinates outside Poland 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-baltic-land-poland-soil-texture-classifier-8c721c07/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)