# HALOWERK Atlantic Land – Belgium Solar Orientation Index

> HALOWERK Atlantic Land – Belgium Solar Orientation Index is a paid API for AI agents from atlantikland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Returns a south-facing slope orientation index (derived from terrain aspect and slope) for a given WGS84 coordinate within Belgium.

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/be-solar-orientation
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-atlantic-land-belgium-solar-orientation-index-d957d89a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_itHs2D_bket4gCgKcDfYR

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-atlantic-land-belgium-solar-orientation-index-d957d89a -d '<json body>'
```

Example prompt: What's the south-facing slope orientation index for the land at latitude 50.3456, longitude 4.8123 in Belgium? I want to know how well-oriented it is for solar exposure.

## When to prefer this

Use this endpoint when you need a fast, pre-computed south-facing slope orientation index specifically for Belgian coordinates, particularly for solar suitability screening, agricultural land evaluation, or site selection workflows. It is purpose-built for Belgium (boundary-validated) and combines aspect and slope into a single actionable index, making it preferable to generic GIS libraries or global DEM APIs when you need a ready-to-use scalar score without processing raw raster data.

## Known failure modes

- Coordinate outside Belgium boundary — request rejected before payment, boundary validation error returned
- Latitude or longitude outside the accepted European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error
- Malformed or missing coordinate fields — schema validation error
- Service unavailable or upstream DEM data issue — 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 Belgium; results outside it are rejected before payment.

## Output

A numeric south-facing slope orientation index derived from the terrain's aspect and slope gradient at the queried coordinate. Higher values indicate stronger south-facing orientation and therefore greater potential solar irradiance. The coordinate is validated against Belgium's Natural Earth boundary; requests outside Belgium 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-atlantic-land-belgium-solar-orientation-index-d957d89a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from atlantikland.halowerk.com](https://www.zero.xyz/host/atlantikland.halowerk.com/llms.txt)