# HALOWERK Land Dossiers – Solar Farm Screening

> HALOWERK Land Dossiers – Solar Farm Screening is a paid API for AI agents from landdossier.halowerk.com, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-14).

Returns a balanced evidence dossier scoring a European land parcel's suitability for solar farm development using six disclosed measurements.

## Facts

- Endpoint: POST https://landdossier.halowerk.com/v1/dossier-solar-farm-balanced
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-land-dossiers-solar-farm-screening-4c82f455
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mEwOvcD4rkxq8TaP9aRE7

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-screening-4c82f455 -d '<json body>'
```

Example prompt: Can you run a solar farm screening dossier on the land at 51.5074° N, 0.1278° W with a 500-metre radius and give me the balanced evidence score and the six measurements?

## When to prefer this

Use this endpoint when you need a fast, deterministic, evidence-based pre-screening score for a specific European land parcel's solar farm suitability — especially in early-stage site selection workflows where a full feasibility study would be premature or costly. It is preferred over manual research or generic GIS tools when an automated, repeatable scoring signal is needed across multiple candidate sites.

## Known failure modes

- Coordinates outside European coverage (latitude 34–72.5°N, longitude -31.5–40.5°E) will return an error
- radius_m outside 50–2000 metre range will be rejected
- Missing required latitude or longitude fields returns a validation error
- Payment failure via x402 protocol will prevent dossier delivery

## How this service works

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

## Output

A structured decision-support dossier containing six disclosed land measurements and a deterministic balanced evidence score indicating the parcel's suitability for solar farm development. The dossier is intended for screening purposes only and does not constitute a permit, valuation, or legal determination.

## 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-screening-4c82f455/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)