# HALOWERK Land Compare – Local Background Deviation Aspect

> HALOWERK Land Compare – Local Background Deviation Aspect is a paid API for AI agents from landvergleich.halowerk.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-13).

Compares the 60-metre site-level dominant aspect measurement against a 1,000-metre local background aspect from the same source and returns the deviation between the two scales.

## Facts

- Endpoint: POST https://landvergleich.halowerk.com/v1/local-background-deviation-aspect
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-land-compare-local-background-deviation-aspect-64efeed2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__LrGxfx3T-zkOd_skvlI4

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-deviation-aspect-64efeed2 -d '<json body>'
```

Example prompt: What's the difference between the site-level dominant aspect and the 1,000-metre local background aspect at latitude 48.2 and longitude 11.6 in Germany? I want to know how much the 60-metre plot diverges from its surroundings.

## When to prefer this

Choose this endpoint when you need a scale-contrast aspect measurement — specifically comparing a fine-grained 60-metre site reading to its 1,000-metre local background from the same consistent data source. Use it instead of a simple aspect lookup when the question is not just 'what direction does this site face?' but 'does this site face a meaningfully different direction than its local surroundings?' It is the right choice for land suitability analysis, microclimate assessment, or site-selection workflows in European geographies where aspect contrast matters.

## Known failure modes

- Coordinates outside European coverage bounds (lat 34–72.5, lon -31.5–40.5) will result in an error or null response
- Invalid or missing latitude/longitude fields return a validation error
- Coastal or boundary coordinates near the edge of the coverage polygon may return partial or unreliable data
- Payment failure or insufficient USDC balance may result in HTTP 402 rejection

## How this service works

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

## Output

The endpoint returns the dominant aspect measured at a 60-metre scale for the given site, the dominant aspect measured at a 1,000-metre local background scale from the same data source, and the numerical deviation between the two values, indicating how much the site's solar orientation diverges from its surrounding landscape context.

## 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-deviation-aspect-64efeed2/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)