# HALOWERK Land Compare – Local Background Solar Orientation Deviation

> HALOWERK Land Compare – Local Background Solar Orientation Deviation is a paid API for AI agents from landvergleich.halowerk.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-15).

Compares the 60-metre site-level solar orientation index with a 1,000-metre local background measured from the same source and reports the deviation for a European coordinate.

## Facts

- Endpoint: POST https://landvergleich.halowerk.com/v1/local-background-deviation-solar-orientation
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-land-compare-local-background-solar-orientation-deviation-e26fcfab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qjFtHE6WByzqUqd9M1iIb

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-land-compare-local-background-solar-orientation-deviation-e26fcfab -d '<json body>'
```

Example prompt: What's the difference in solar orientation index between the site at latitude 48.23, longitude 11.56 and its surrounding 1-kilometre local background?

## When to prefer this

Use this endpoint when you need to understand how a specific European site's solar orientation compares to its local landscape context — not just the absolute solar orientation value. Ideal for land suitability assessments, renewable energy site screening, agriculture planning, or any analysis requiring site-vs-background contrast rather than a raw site measurement or a two-point comparison.

## Known failure modes

- Coordinates outside European coverage bounds (latitude 34–72.5, longitude -31.5–40.5) return a validation error
- Missing latitude or longitude fields return a bad request error
- Coordinates in sea or non-terrestrial areas may return null or no-data responses
- Service downtime or quota exhaustion may return 5xx errors

## How this service works

Compares the 60 metre site measurement for solar orientation index with a 1,000 metre local background measured from the same source and reports the deviation.

## Output

Returns the solar orientation index measured at the 60-metre site resolution, the solar orientation index for the 1,000-metre local background around the same point, and the signed numerical deviation between them — indicating whether the site is more or less favorably solar-oriented than its surroundings.

## 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-land-compare-local-background-solar-orientation-deviation-e26fcfab/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from landvergleich.halowerk.com](https://www.zero.xyz/host/landvergleich.halowerk.com/llms.txt)