Cook County / Chicago Property Data
This server provides a hosted, pay-per-call API for integrated Cook County/Chicago property records — combining parcels, sales history, building permits, assessments, and valuations into ready-to-use answers without requiring raw open-data joins.
Search property by address (free): Resolve a street address to parcel PIN(s) with ranked similarity scores — the starting point if you don't have a PIN.
Look up a single parcel ($0.01): Retrieve core parcel details by PIN — address, city, ZIP, property class, township, neighborhood code, ward/municipality, and lat/lon.
Get a full property dossier ($0.03): Pull a comprehensive joined record including sales & deed history, building permits (linked via address + geo matching), and property-tax assessment history.
Find comparable sales and valuation estimate ($0.10): Retrieve recent arm's-length sales in the same assessor neighborhood and property class, with an implied low/median/high price range — useful for valuation, investment screening, and underwriting.
Get a free sample response (free): Fetch a fixed example of every response shape to evaluate data format before paying.
Key details:
Covers ~1.9 million Cook County parcels, including Chicago
Data refreshed nightly from official Cook County and City of Chicago open-data portals
No signup or API key required; payments via the x402 protocol (USDC on Base or Solana), suitable for autonomous agents and LLM pipelines
Only property-keyed public records — no owner or occupant personal information
Allows payment via USDC on Solana for pay-per-call property data queries, including parcel records, sales history, permits, and comparable sales.
Cook County / Chicago Property Data — MCP server
A hosted, pay-per-call Model Context Protocol (MCP) server for Cook County, Illinois — including the City of Chicago — property records: parcels, recorded sales & deed history, building permits, and property-tax assessment history, joined and normalized into one answer. Plus comparable sales (comps) and a lightweight automated valuation.
No signup, no API key — pay per call via the x402 protocol (USDC on Base or Solana).
What this adds over raw open data
This returns finished, joined answers — not raw rows you have to query and stitch. The county open data (Socrata) can't give you:
Building permits linked to a PIN. The Chicago permits feed has no PIN field — the permit→parcel link is derived here (exact address match + nearest-parcel geo match). You can't reproduce this with a raw SoQL query.
A street address on a parcel. Parcel Universe has no address; it's joined in from a separate dataset here.
Comparable-sales valuation. Arm's-length filtering, same-neighborhood/class matching, and an implied low/median/high range — derived analysis, not a row fetch.
So one call returns a normalized property record; against raw open data you'd orchestrate multiple datasets and rebuild joins that don't exist upstream.
Related MCP server: nyc-property-intel
Connect
Remote MCP endpoint:
https://api.ingest0r.com/mcp(streamable-http — add it to any MCP client; nothing to install)PulseMCP: cook-county-property-data
Official MCP Registry:
com.ingest0r.api/cook-county-property-dataWebsite / HTTP API: https://api.ingest0r.com
Free example response (no payment): https://api.ingest0r.com/v1/sample
Tools
Tool | Price | Description |
| FREE | Fixed example of every response shape — evaluate before paying. |
| FREE | Resolve a street address → parcel PIN(s). The no-PIN entry point. |
| $0.01 | Single parcel record by 14-digit PIN. |
| $0.03 | Full dossier: address, sales & deed history, permits, assessment history. |
| $0.10 | Comparable sales + implied low/median/high valuation. |
The PIN tools return an HTTP 402 with machine-readable x402 payment terms; pay in USDC and retry. Search and the sample are free — and three real parcels are served free on the paid routes (live data you can verify against the county's own portals): 09253050270000 · 09253060510000 · 09253140190000.
Data & coverage
~1.9M parcels, refreshed nightly from Cook County Assessor, Cook County Recorder of Deeds, and City of Chicago open-data portals (Socrata). Property-keyed public records only — no owner/occupant personal data.
Use cases
Real-estate due diligence, automated valuation / comps, title & lien research prep, lead enrichment, and market analysis — for autonomous agents and LLM pipelines.
Maintenance
Resources
Unclaimed servers have limited discoverability.
Looking for Admin?
If you are the server author, to access and configure the admin panel.
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