# HALOWERK Baltic Land – Lithuania Soil Cation Exchange Capacity (0-5 cm)

> HALOWERK Baltic Land – Lithuania Soil Cation Exchange Capacity (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 cation exchange capacity (CEC) for the 0-5 cm topsoil layer at a given coordinate within Lithuania.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/lt-soil-cec
- 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-lithuania-soil-cation-exchange-capacity-0-5-cm-deeb6da1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__6id5tfvhgPCoMklTh6qN

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-lithuania-soil-cation-exchange-capacity-0-5-cm-deeb6da1 -d '<json body>'
```

Example prompt: What's the cation exchange capacity of the topsoil at latitude 54.6872, longitude 25.2797 in Lithuania? I need the SoilGrids CEC for the 0-5 cm layer.

## When to prefer this

Use this endpoint when you specifically need SoilGrids cation exchange capacity data for the 0-5 cm topsoil layer at a point location within Lithuania. It is ideal for per-parcel soil queries in agricultural, ecological, or land-use workflows targeting Lithuanian territory. Prefer it over generic soil APIs when you need validated, boundary-checked results and are operating under a pay-per-call model for precise point queries.

## Known failure modes

- Coordinate outside Lithuania boundary — request rejected before payment with a boundary validation error
- Latitude or longitude outside European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error
- Missing latitude or longitude parameter — 400 bad request
- Payment failure or insufficient USDC balance — 402 payment required
- Internal data unavailability for the queried cell — 500 or empty response

## How this service works

Mean SoilGrids cation exchange capacity for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Lithuania; results outside it are rejected before payment.

## Output

A numeric mean cation exchange capacity value (in cmolc/kg or equivalent SoilGrids units) for the 0-5 cm topsoil layer at the requested coordinate. The coordinate is validated against Lithuania's Natural Earth boundary; requests outside Lithuania are rejected before any charge is incurred.

## 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-lithuania-soil-cation-exchange-capacity-0-5-cm-deeb6da1/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)