{"uid":"cap_mWRzxhCAWj-YK3wAZPXoY","slug":"locus-house-price-index-property-scan-8c95672d","name":"Locus House Price Index & Property Scan","description":"FHFA house price index trend for a state. Perfect for: 'house price index for a state', 'home price appreciation in a state', 'HPI year-over-year for an area', 'state home price trend', 'how much have home prices risen in a state'. Returns the FRED-hosted FHFA all-transactions HPI for the state of a US point: latest index, year-over-year percent change, and units. State-level. Historical index, not a forecast. Key-gated (FRED); charge-free when unkeyed, on failure, or no data.","url":"https://api.locus.report/api/locus-house-price-index","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"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":"0.05","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":{"p10Cents":"5.0000","medianCents":"5.0000","p90Cents":"5.0000","minCents":"5.0000","maxCents":"5.0000","p95Cents":"5.0000","sampleCount":1,"varies":false,"failureChargeRate":1},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_dZOqMQ_7npyTZTDXKS_s3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Scans local records, parcel rules, and risk signals for a US property to surface factors affecting its use, cost, plans, or future value.","exampleAgentPrompt":"Can you run a Locus property scan on 742 Evergreen Terrace, Springfield, IL to check local records, parcel rules, and any risk signals that might affect its value or future use?","exampleUseCases":null,"resultDescription":"Returns a JSON object with a report ID, list of caveats, local records array, and a generation timestamp — surfacing parcel rules, risk signals, and factors that may affect the property's use, cost, development plans, or future value.","failureModes":["Missing both address and zip returns a validation error","Invalid or unrecognized US address may return empty records array","Non-US addresses are not supported","Payment of 0.05 USDC not fulfilled returns 402 Payment Required","Malformed JSON input returns 400 error"],"whenToPreferThis":"Use this endpoint when you need a quick, low-cost ($0.05) preliminary scan of local records, parcel rules, and risk signals for a US property — especially useful before a purchase decision, development plan, or investment analysis. Prefer this over full property data APIs when you need a fast early-stage signal rather than a comprehensive appraisal.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:45:27.395Z","isFirstParty":false}