cook-county-property-data

Cook County / Chicago, Illinois property records for AI agents: resolve a street address to a parcel PIN (free), then fetch parcel records, a full property dossier (recorded sales & deed history, building permits, property-tax assessment history), or comparable sales with an implied valuation range.

These are joined, derived answers the raw county open data can't return — permits are linked to PINs here (the city permit feed has no PIN field), addresses are joined to parcels, and comps are arm's-length filtered. ~1.9M parcels, refreshed nightly. Public records only — no owner or occupant personal data.

Tools: get_free_sample ($0) · search_chicago_property_by_address (free) · get_cook_county_parcel ($0.01) · get_cook_county_property_dossier ($0.03) · find_chicago_comparable_sales ($0.10)

Paid tools use x402 (USDC on Base or Solana) — no signup, no API key. Try the free sample and the [free live example parcels](https://api.ingest0r.c

Requires a local install: run the server on your machine, then point your client at it.