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

> HALOWERK Baltic Land – Germany 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 value for the 0–5 cm topsoil layer at a given coordinate within Germany, validated against the Natural Earth boundary.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/de-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-germany-soil-organic-carbon-0-5-cm-b72ef4cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ddxiIfBh6Rd-mEGcktZyi

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-germany-soil-organic-carbon-0-5-cm-b72ef4cd -d '<json body>'
```

Example prompt: What's the mean soil organic carbon in the top 5 cm at latitude 52.52, longitude 13.40 in Germany? I need the SoilGrids value for that location.

## When to prefer this

Choose this endpoint when you need georeferenced SoilGrids mean organic carbon data specifically for locations within Germany at the 0–5 cm depth layer. It is ideal for soil science, agricultural analysis, carbon accounting, and land use applications where the Natural Earth Germany boundary validation is a useful guardrail. Prefer it over generic soil APIs when you specifically need SoilGrids-derived organic carbon and have a known lat/lon within Germany.

## Known failure modes

- Coordinate outside Germany boundary – rejected before payment with a boundary validation error
- Latitude or longitude outside the accepted European coverage range (lat 34–72.5, lon -31.5–40.5) – schema validation error
- Missing latitude or longitude parameter – request rejected with a parameter error
- Network or service timeout – no result returned
- Payment processing failure via x402 – call not executed

## How this service works

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

## Output

A numeric mean organic carbon value for the 0–5 cm topsoil layer at the queried coordinate, derived from SoilGrids data, returned only if the coordinate falls within the German Natural Earth boundary. Requests outside Germany 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-germany-soil-organic-carbon-0-5-cm-b72ef4cd/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)