{"uid":"cap_mqmpZoyF86v74zME0d3_N","slug":"cook-county-chicago-property-records-api-add4a660","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. Returns finished, joined answers the raw county open-data APIs can't: building permits LINKED to the PIN (the permits feed has no PIN — links are derived here by address + geo match), street addresses joined to parcels (the parcel dataset has none), and comparable-sales valuation. You get the answer, not rows to query, stitch, and derive 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/dossier/%7Bpin%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"lat":41.6883,"lon":-87.6219,"pin":"25212190120000","ward":"9","class":"203","permits":[{"cost":18500,"desc":"Interior renovation — kitchen and bath","type":"RENOVATION/ALTERATION","issued":"2022-08-02"},{"cost":4200,"desc":"Replace rear porch","type":"EASY PERMIT PROCESS","issued":"2019-05-11"}],"prop_zip":"60628","tax_year":2025,"nbhd_code":"70091","prop_city":"CHICAGO","municipality":"CHICAGO","prop_address":"1 E 113TH ST","sales_history":[{"date":"2021-06-15","price":245000,"doc_no":"2116622045","deed_type":"WARRANTY DEED"},{"date":"2014-03-20","price":98000,"doc_no":"1407944120","deed_type":"WARRANTY DEED"}],"township_name":"Hyde Park","assessment_history":[{"year":2025,"board":29800,"certified":31250},{"year":2024,"board":29500,"certified":29500},{"year":2023,"board":26300,"certified":27100}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_uku9yLVEglDRmZ9Jtf5AQ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Look up unified parcel details, sales history, deed records, building permits, and tax assessment history for any Cook County, IL property by address or 14-digit PIN.","exampleAgentPrompt":"Pull the full property dossier for 123 N Michigan Ave, Chicago — I need the parcel details, any recorded sales and deed history, building permits, and tax assessment history all in one place.","exampleUseCases":null,"resultDescription":"A normalized, joined dossier containing parcel metadata, recorded sales and deed transaction history, building permit records, and property tax assessment history for the requested Cook County property — sourced from county Assessor, Recorder of Deeds, and City permit data, refreshed nightly.","failureModes":["Invalid or non-existent PIN returns 404 or empty result","Address not found or ambiguous address returns no match","Property outside Cook County returns error or no data","Payment failure via x402 protocol blocks request","Nightly refresh lag may mean very recent recordings are not yet reflected"],"whenToPreferThis":"Use this endpoint when you need a single, unified property record for a Cook County or City of Chicago parcel without manually stitching together the Assessor, Recorder of Deeds, and City permit portals. Ideal for real-estate due diligence, automated valuation/comps, title and lien research prep, lead enrichment, and market analysis at $0.03 per call with no API key required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-08T12:43:59.903Z","isFirstParty":false}