# Locus Radon Zone Property Scan

> Locus Radon Zone Property Scan is a paid API for AI agents from api.locus.report, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Scans a US property address or ZIP code for radon zone classification, local records, parcel rules, and environmental risk signals that may affect property use or value.

## Facts

- Endpoint: POST https://api.locus.report/api/locus-radon-zone
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/locus-radon-zone-property-scan-df33bf87
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TZOY9J2KCL65WzhVXIpc1

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 locus-radon-zone-property-scan-df33bf87 -d '<json body>'
```

Example prompt: Can you run a Locus radon zone scan on 742 Evergreen Terrace, Springfield, IL 62704 and tell me what risk signals or parcel rules might affect this property?

## When to prefer this

Use this endpoint when you need a quick, low-cost ($0.05) environmental and parcel-level property intelligence scan for a US address, particularly to check radon zone risk, local regulations, or early-stage due diligence before a real estate decision. Prefer this over general property APIs when radon zone classification and local record signals are specifically needed.

## Known failure modes

- Invalid or unrecognized US address returns empty records array with caveats
- Missing both address and zip fields returns a validation error
- Non-US addresses or international locations are not supported
- Payment failure (x402) if USDC balance is insufficient — returns 402 status
- Ambiguous address may resolve to wrong parcel or return partial results

## How this service works

EPA radon zone for an address or county. Perfect for: 'radon zone for an address', 'EPA radon potential for a county', 'is this a high radon area', 'radon zone 1 2 or 3 lookup'. Returns the EPA Map of Radon Zones county designation (1/2/3) for a point or explicit state+county, with a Zone 1 high-potential watch item and provenance. National. County-potential context only -- not a measured indoor radon reading. Charge-free when geocoding fails or the county is not matched.

## Output

Returns a JSON report with a unique scan ID, radon zone classification, local parcel records, applicable rules, environmental risk signals, caveats, and a generation timestamp for the queried US address or ZIP code.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "state": {
   "type": "string",
   "maxLength": 2,
   "minLength": 2
  },
  "county": {
   "type": "string",
   "maxLength": 80,
   "minLength": 3
  },
  "address": {
   "type": "string",
   "maxLength": 200,
   "minLength": 5
  },
  "latitude": {
   "type": "number",
   "maximum": 90,
   "minimum": -90
  },
  "longitude": {
   "type": "number",
   "maximum": 180,
   "minimum": -180
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": "locus_example",
  "caveats": [
   "Example artifact; not live data."
  ],
  "records": [],
  "generatedAt": "2026-01-01T00:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/locus-radon-zone-property-scan-df33bf87/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.locus.report](https://www.zero.xyz/host/api.locus.report/llms.txt)