environment
radon
housing
read-only
paid
x402
category:hazard

EPA radon zone by county

EPA Map of Radon Zones county designation (1, 2, or 3) for an address, point, or state and county, for buyer, owner and lender agents. Returns the same records as locus_radon_zone. Use this when your client can only call paid x402 routes. Use locus_radon_zone instead when you can call Locus free tools (REST tools/call or MCP).

post/api/locus-radon-zone

Request

  • Base URL: https://api.locus.report
  • URL: https://api.locus.report/api/locus-radon-zone
  • Auth: one of:
    • API key in header PAYMENT-SIGNATURE
    • API key in header Authorization

Request body

addressstring

Optional US street address; used to derive county when state+county or lat/lng are not provided.

latitudenumber

Optional decimal latitude; provide with longitude to derive county from the point.

longitudenumber

Optional decimal longitude; provide with latitude to derive county from the point.

statestring

Optional two-letter state code; provide with county to skip point resolution.

countystring

Optional county name, e.g. Wake County; provide with state to skip point resolution.

Response

Atomic read result. A substantive result is paid; an empty/out-of-coverage result carries charged:false (x402 settlement suppressed).

object required

Changes

No recorded changes to this operation across all 1 revision of this API.