{"uid":"cap_TZOY9J2KCL65WzhVXIpc1","slug":"locus-radon-zone-property-scan-df33bf87","name":"Locus Radon Zone Property Scan","description":"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.","url":"https://api.locus.report/api/locus-radon-zone","method":"POST","headers":{},"bodySchema":{"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}}},"responseSchema":{"type":"json","example":{"id":"locus_example","caveats":["Example artifact; not live data."],"records":[],"generatedAt":"2026-01-01T00:00:00.000Z"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_MgUqXYcX54iUzCbCm_k6x","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"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?","exampleUseCases":null,"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:04:21.437Z","isFirstParty":false}