{"uid":"cap_siKdNTxasw44ygPUAxdQY","slug":"cook-county-chicago-property-records-api-be95fb82","name":"Cook County (Chicago) Property Records API","description":"Pay-per-call property-records API for Cook County, Illinois — including the City of Chicago. Look up any property by street ADDRESS or 14-digit PIN and get parcel details, recorded sales & deed history, building permits, and property-tax assessment history, joined and normalized into one answer. Replaces stitching the county Assessor, Recorder of Deeds, and City permit open-data portals yourself. Use for real-estate due diligence, automated valuation / comparable-sales (comps), title and lien research prep, lead enrichment, and market analysis. ~1.9M parcels, refreshed nightly, property-keyed (public records only — no personal data). No signup or API key: pay per call via the x402 protocol (USDC on Base or Solana).","url":"https://api.ingest0r.com/v1/search/%7Bq%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"query":"1 E 113th St","matches":[{"pin":"25212190120000","score":0.98,"prop_zip":"60628","prop_city":"CHICAGO","prop_address":"1 E 113TH ST"}]}},"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_WhH7bPnEgPYIO_1-0wrKf","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":"Look up Cook County / Chicago parcel details, recorded sales, deed history, building permits, and tax assessment history by street address or 14-digit PIN","exampleAgentPrompt":"Pull up all the property records for 123 N Michigan Ave, Chicago — I need the parcel details, any recorded sales and deed transfers, building permits, and tax assessment history for due diligence on this deal.","exampleUseCases":[{"title":"Automated valuation for mortgage pre-approvals","prompt":"Look up the property at 4847 North Kimball Avenue in Chicago and get me the recent sale prices, tax assessments, and any major permits — I need to run comps for this mortgage applicant."},{"title":"Title and lien research before closing","prompt":"Pull the complete deed history and recorded transfers for the parcel at PIN 16-08-301-015-0000, plus any outstanding liens or permit issues — we're closing on this Cook County property next week."},{"title":"Lead enrichment for investment targeting","prompt":"Give me the property records for 7321 South Shore Drive, Chicago — sales history, current tax assessment, and recent permits — so I can figure out which investors might be interested in this neighborhood."}],"resultDescription":"A normalized, joined record containing: parcel metadata (PIN, legal description, land use), recorded sales and deed transfer history, building permit history, and property tax assessment history — sourced from the Cook County Assessor, Recorder of Deeds, and City of Chicago permit portals, refreshed nightly, covering ~1.9M Cook County parcels.","failureModes":["Address not found or ambiguous — returns empty result or error if the street address does not match a known Cook County parcel","Invalid PIN format — 14-digit PIN required; malformed input returns an error","Property outside Cook County — only Illinois Cook County parcels are covered; suburban or other-county addresses will not match","No records available — newly created parcels or data gaps may return partial results","Payment failure — x402 protocol USDC payment not completed results in 402 response and no data returned"],"whenToPreferThis":"Use this endpoint when you need consolidated Cook County / Chicago property data — sales history, deed records, permits, and tax assessments — in a single call, without manually stitching multiple county open-data portals. Prefer it over raw government data sources for real estate due diligence, AVM comps research, title/lien prep, or lead enrichment workflows where nightly-refreshed, parcel-keyed data across all record types is needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:38:22.477Z","isFirstParty":false}