{"$schema":"https://wellknown.network/schemas/agent-record-v1.json","schemaVersion":"1","id":"ag_y48w3zgkqskg","handle":"cook-county-chicago-property-records-api","url":"https://wellknown.network/agents/cook-county-chicago-property-records-api","links":{"self":"https://wellknown.network/agents/cook-county-chicago-property-records-api/record.json","html":"https://wellknown.network/agents/cook-county-chicago-property-records-api","markdown":"https://wellknown.network/agents/cook-county-chicago-property-records-api/record.md","api":"https://wellknown.network/api/v1/agents/cook-county-chicago-property-records-api","status":"https://wellknown.network/api/v1/agents/cook-county-chicago-property-records-api/status","claim":"https://wellknown.network/agents/cook-county-chicago-property-records-api/claim","claimApi":"https://wellknown.network/api/v1/claims","badge":"https://wellknown.network/agents/cook-county-chicago-property-records-api/badge.svg","openapi":"https://wellknown.network/openapi.json"},"ard":{"identifier":"urn:air:api.ingest0r.com:agent:cook-county-chicago-property-records-api","type":"application/a2a-agent-card+json"},"kind":"agent","declared":{"name":"Cook County (Chicago) property records API","summary":"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. Re…","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 and no API key. Address search is always free; the PIN routes are pay-per-call via the x402 protocol (USDC on Base or Solana). No API key and NO WALLET NEEDED to start: address search is always free and the first 25 calls per client per day return real data free; x402 (USDC on Base/Solana) covers anything beyond that.","publisher":{"name":"independent","url":"https://api.ingest0r.com"},"homepage":"https://api.ingest0r.com/llms.txt","repository":null,"version":"0.4.2","license":null,"protocols":["a2a"],"tags":["free","sample","evaluation","real-estate","property-data","cook-county","public-records"],"pricing":null,"endpoints":[{"url":"https://api.ingest0r.com","type":"a2a","auth":"none","probeable":true}],"skills":[{"id":"v1_sample","name":"sample","tags":["free","sample","evaluation","real-estate","property-data","cook-county"],"description":"FREE fixed example of every paid response shape — evaluate the data structure and quality for $0 before paying. Not a live record; see also the free live example PINs in the manifest."},{"id":"v1_search","name":"search","tags":["real-estate","property-data","cook-county","public-records"],"description":"Address → PIN lookup for Cook County / Chicago. Resolve a full or partial STREET ADDRESS to its parcel PIN(s): ranked candidate parcels with address, city, ZIP, a match score and a match_quality flag (exact | likely | weak | none) — resolving the address-to-parcel gap (the raw parcel dataset has no address). The entry point when you have an address but not a PIN — call this before /v1/dossier, /v1/parcel, or /v1/comps. Public assessor records. FREE — no payment required (the PIN routes are pay-…"},{"id":"v1_parcel","name":"parcel","tags":["real-estate","property-data","cook-county","public-records"],"description":"Single Cook County, IL parcel record by PIN: street address, city, ZIP, assessor property class, township, neighborhood, ward/municipality, census tract, school districts, walkability and airport-noise context, and lat/lon — with the street address joined in (the raw parcel dataset has none). The cheap single-property lookup. Source: Cook County Assessor, refreshed nightly. FREE for your first 25 calls per client per day (no wallet needed); $0.01 per call past that allowance."},{"id":"v1_dossier","name":"dossier","tags":["real-estate","property-data","cook-county","public-records"],"description":"Complete Cook County / Chicago property record in one call: parcel basics PLUS recorded sales & deed history, building permits, and property-tax assessment history, joined and normalized, with neighborhood/ward/school/walkability context. Permits are LINKED to the PIN (the raw permit feed has none) — one finished record, not raw rows to stitch. For due diligence, valuation, underwriting. Nightly-fresh; no personal data. FREE for your first 25 calls per client per day (no wallet needed); $0.03 p…"},{"id":"v1_comps","name":"comps","tags":["real-estate","property-data","cook-county","public-records"],"description":"Comparable sales (comps) and a lightweight automated valuation for a Cook County / Chicago property: recent arm's-length sales in the same assessor neighborhood and property class over the last 18 months, with an implied low/median/high price range, each comp carrying its distance in metres from the subject. Thin markets widen automatically (36 months, then the property-class group) and the response reports which rung was used. Non-arm's-length and multi-parcel deeds are filtered out — a derive…"}],"tools":["sample","search","parcel","dossier","comps"],"extra":{"inputModes":["application/json"],"outputModes":["application/json"],"capabilities":{"streaming":false},"protocolVersion":"0.3.0"},"attribution":{"kind":"a2a_card","name":"a2a_card","summary":"a2a_card","version":"a2a_card","description":"a2a_card","homepageUrl":"a2a_card","publisherUrl":"a2a_card","publisherName":"a2a_card"}},"derived":{"capabilities":[{"slug":"ai.evaluation","name":"Evaluation & Benchmarks","confidence":1,"provenance":"declared"},{"slug":"commerce.payments","name":"Payments","confidence":0.756,"provenance":"derived"}],"categories":["ai","commerce"]},"observed":{"status":"live","statusReason":"Responded 2h ago.","lastOkAt":"2026-09-05T21:30:03.052Z","lastProbedAt":"2026-09-05T21:30:03.052Z","statusComputedAt":"2026-09-05T21:30:42.716Z","reliability30d":{"probes":1,"successRate":1,"p50Ms":127},"latestObservations":[{"at":"2026-09-05T21:30:03.052Z","kind":"a2a_card","ok":true,"httpStatus":200,"latencyMs":127,"error":null,"detail":{"name":"Cook County (Chicago) property records API","signed":false,"version":"0.4.2","cardPath":"/.well-known/agent-card.json","skillCount":5,"protocolVersion":"0.3.0"}}],"tools":null,"package":null},"verification":{"claimed":false,"claimedAt":null,"proofs":[]},"provenance":{"sources":[{"source":"a2a_card","key":"https://api.ingest0r.com/.well-known/agent-card.json","url":"https://api.ingest0r.com/.well-known/agent-card.json","firstSeenAt":"2026-09-05T18:20:55.599Z","fetchedAt":"2026-09-05T18:20:55.599Z","normalizedAt":"2026-09-05T18:20:55.599Z"}]},"firstSeenAt":"2026-09-05T18:20:55.599Z","updatedAt":"2026-09-05T18:25:49.725Z"}