# HALOWERK Atlantic Land – France Solar Orientation Index

> HALOWERK Atlantic Land – France 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 2026-09-15).

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

## Facts

- Endpoint: POST https://atlantikland.halowerk.com/v1/fr-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-atlantic-land-france-solar-orientation-index-7116e6f8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Lj7dq720Y2aS1xalW8eJx

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-france-solar-orientation-index-7116e6f8 -d '<json body>'
```

Example prompt: What's the south-facing solar orientation index for the hillside at latitude 44.85, longitude 0.57 in France? I want to know how well-oriented it is for sun exposure.

## When to prefer this

Choose this endpoint when you need a quantified south-facing slope orientation metric specifically for a location within metropolitan France. It is ideal for solar siting, agricultural terroir assessment, or land evaluation workflows where terrain aspect and slope interaction matters. It is not suitable for coordinates outside France or for general European solar irradiance data.

## Known failure modes

- Coordinate outside France boundary returns a validation error with no charge
- Coordinate outside the accepted latitude/longitude range (34–72.5°N, -31.5–40.5°E) is rejected
- Malformed or missing latitude/longitude fields return an input validation error
- Service unavailability or upstream terrain data errors may return a 5xx response

## How this service works

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

## Output

A numeric south-facing slope orientation index for the queried French coordinate, computed from terrain aspect and slope data. Higher values indicate stronger south-facing exposure. Coordinates outside the Natural Earth boundary of France are rejected before any computation or payment.

## 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-france-solar-orientation-index-7116e6f8/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)