# HALOWERK Baltic Land – Lithuania Soil Organic Carbon (0–5 cm)

> HALOWERK Baltic Land – Lithuania Soil Organic Carbon (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 organic carbon content for the 0–5 cm topsoil layer at a given coordinate within Lithuania, validated against Natural Earth boundaries.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/lt-soil-organic-carbon
- 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-organic-carbon-0-5-cm-04204281
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TV-mt20Bh9Wf5U91_pa8O

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-organic-carbon-0-5-cm-04204281 -d '<json body>'
```

Example prompt: What's the mean soil organic carbon in the 0–5 cm topsoil layer at latitude 54.6872, longitude 25.2797 in Lithuania?

## When to prefer this

Choose this endpoint when you need point-level SoilGrids organic carbon data specifically for locations within Lithuania. It is preferable to generic soil data APIs because it pre-validates coordinates against Lithuania's national boundary before charging, ensuring you are billed only for valid Lithuanian lookups. It pairs well with sibling endpoints on the same host for sand fraction, clay fraction, bulk density, and terrain metrics.

## Known failure modes

- Coordinate outside Lithuania boundary: rejected before payment, no result returned
- Coordinate outside European coverage bounds (lat 34–72.5, lon -31.5–40.5): validation error
- Invalid or missing latitude/longitude: schema validation failure
- SoilGrids data unavailable for the queried cell: no-data response
- Network timeout or upstream SoilGrids service unavailability

## How this service works

Mean SoilGrids organic carbon 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 value representing the mean SoilGrids organic carbon content (g/kg or dg/kg) for the 0–5 cm topsoil layer at the specified coordinate, provided the coordinate falls within the validated Natural Earth boundary of Lithuania. Coordinates outside Lithuania are rejected before any payment is charged.

## 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-organic-carbon-0-5-cm-04204281/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)