# HALOWERK Baltic Land – Solar Orientation Index (Germany)

> HALOWERK Baltic Land – Solar Orientation Index (Germany) is a paid API for AI agents from baltikum.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns a south-facing slope orientation index derived from aspect and slope data for a given coordinate within Germany.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/de-solar-orientation
- Price: $0.003/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-solar-orientation-index-germany-76558752
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_40oUVoY8fqwP1VINBedS_

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-solar-orientation-index-germany-76558752 -d '<json body>'
```

Example prompt: What's the south-facing slope orientation index for the location at latitude 48.137 and longitude 11.576 in Germany? I want to know how suitable the terrain is for solar exposure.

## When to prefer this

Use this endpoint when you need a terrain solar orientation index specifically for a location within Germany, particularly for solar energy site assessment, agricultural sun exposure analysis, or land suitability scoring. It is preferable when you need a quick, cheap per-call computation with built-in boundary validation to avoid charges for out-of-range coordinates.

## Known failure modes

- Coordinate outside Germany boundary: rejected before payment, error indicating invalid location
- Latitude or longitude outside the published European range (34–72.5°N, -31.5–40.5°E): validation error
- Missing or malformed latitude/longitude fields: schema validation failure
- Network timeout or service unavailability: HTTP 5xx error

## How this service works

South-facing slope orientation index derived from aspect and slope. The coordinate is validated against the Natural Earth boundary for Germany; results outside it are rejected before payment.

## Output

A numeric south-facing slope orientation index derived from the site's aspect and slope, reflecting how strongly the terrain faces south. Coordinates outside Germany's Natural Earth boundary 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-solar-orientation-index-germany-76558752/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)