# HALOWERK Land Dossiers – Solar Farm Terrain-First Screening

> HALOWERK Land Dossiers – Solar Farm Terrain-First Screening is a paid API for AI agents from landdossier.halowerk.com, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-15).

Returns a terrain-priority evidence score and six geospatial measurements for solar farm site suitability screening at a given European location.

## Facts

- Endpoint: POST https://landdossier.halowerk.com/v1/dossier-solar-farm-terrain-first
- Price: $0.012/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-dossiers-solar-farm-terrain-first-screening-e10295cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MsW8sWDXMxZkW6rjOKpT3

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-dossiers-solar-farm-terrain-first-screening-e10295cd -d '<json body>'
```

Example prompt: Can you run a solar farm terrain screening dossier for the coordinates 48.8566°N, 2.3522°E with a 500-metre radius and tell me the terrain-priority evidence score and the six measurements?

## When to prefer this

Choose this endpoint when you need a fast, low-cost, deterministic terrain-priority screening signal for a solar farm candidate site within European coverage, before investing in full surveys or planning applications. It is purpose-built for terrain-first solar siting — distinct from the sibling endpoints for housing, offices, hotels, hospitals, or schools — and returns reproducible scores suitable for comparing multiple candidate locations programmatically.

## Known failure modes

- Coordinates outside European coverage bounds (lat 34–72.5, lon -31.5–40.5) will be rejected
- Radius below 50m or above 2000m will be invalid
- Malformed or missing latitude/longitude fields return a validation error
- Payment failure via x402 protocol returns a 402 response requiring USDC payment
- Temporary service unavailability may return a 503 error

## How this service works

Decision-support dossier for solar farm screening using six disclosed measurements and a deterministic terrain-priority evidence score. It is screening evidence, not a permit, valuation or legal determination.

## Output

A decision-support dossier containing six disclosed geospatial terrain measurements and a deterministic terrain-priority evidence score for the specified location and radius. The output is screening evidence only — not a permit, legal determination, property valuation, or planning recommendation.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "latitude": {
   "type": "number",
   "maximum": 72.5,
   "minimum": 34,
   "description": "WGS84 latitude inside the published European coverage."
  },
  "radius_m": {
   "type": "integer",
   "default": 250,
   "maximum": 2000,
   "minimum": 50
  },
  "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-dossiers-solar-farm-terrain-first-screening-e10295cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from landdossier.halowerk.com](https://www.zero.xyz/host/landdossier.halowerk.com/llms.txt)