# HALOWERK Baltic Land – Solar Orientation Index (Poland)

> HALOWERK Baltic Land – Solar Orientation Index (Poland) 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 terrain aspect and slope for a given coordinate within Poland.

## Facts

- Endpoint: POST https://baltikum.halowerk.com/v1/pl-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-poland-625d249f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_e_DMfaJzxN-L786muaCeo

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-poland-625d249f -d '<json body>'
```

Example prompt: What's the south-facing slope orientation index for the location at latitude 50.06 and longitude 19.94 in Poland? I want to understand how suitable the terrain is for solar exposure.

## When to prefer this

Choose this endpoint when you need a precomputed, point-specific south-facing slope index for a location in Poland and want a fast, pay-per-call result without running your own DEM/aspect analysis pipeline. It is ideal for site screening workflows where many candidate coordinates need to be scored quickly for solar suitability. Prefer it over general elevation or land-cover endpoints when the specific question is about solar orientation of terrain slopes.

## Known failure modes

- Coordinate outside Poland boundary — request rejected before payment, no result returned
- Latitude or longitude outside allowed European bounds (lat 34–72.5, lon -31.5–40.5) — validation error
- Malformed or missing coordinate fields — request returns a schema validation error
- Edge cases near Polish border may be ambiguous and rejected

## How this service works

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

## Output

A numeric south-facing slope orientation index that combines terrain aspect and slope steepness to quantify how favorably a location faces toward the south (and thus toward solar radiation). Higher values indicate stronger south-facing solar exposure. Results are only returned for coordinates validated as being within the Natural Earth boundary of Poland; coordinates outside this boundary 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-solar-orientation-index-poland-625d249f/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)