Back to Cook County (Chicago) property records API
Card snapshot
api.ingest0r.com
·
2026-06-30 23:38:44 UTC
·
1c65c70cef5213743f83ef8fdda61be6f28f4a129b52efbc8d2bded95e97cb20
This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.
{
"protocolVersion": "0.3.0",
"name": "Cook County (Chicago) property records API",
"description": "Pay-per-call property-records API for Cook County, Illinois \u2014 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 \u2014 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 \u2014 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",
"version": "0.1.0",
"provider": {
"organization": "independent",
"url": "https://api.ingest0r.com"
},
"defaultInputModes": [
"application/json"
],
"defaultOutputModes": [
"application/json"
],
"capabilities": {
"streaming": false,
"extensions": [
{
"uri": "https://x402.org/extensions/payments",
"description": "Pay-per-call via x402 (HTTP 402 + USDC).",
"required": true,
"params": {
"protocol": "x402",
"x402Version": 2,
"accepts": [
{
"scheme": "exact",
"network": "eip155:8453",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"currency": "USDC",
"payTo": "0x98D530C0667A4B18e692F182DdCAb1c2bECb5B9B"
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"currency": "USDC",
"payTo": "G3qr8ahZnuFSYjvrCYM4LLDdoLzFq8Boq9XrURVcA9YF"
}
],
"prices": {
"/v1/search": "10000",
"/v1/parcel": "10000",
"/v1/dossier": "30000",
"/v1/comps": "100000"
},
"currency": "USDC"
}
}
]
},
"securitySchemes": {},
"x-free-sample": "https://api.ingest0r.com/v1/sample",
"skills": [
{
"id": "v1_search",
"name": "search",
"description": "Address \u2192 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 and a match score \u2014 resolving the address\u2194parcel gap (the raw parcel dataset has no address). The entry point when you have an address but not a PIN \u2014 call this before /v1/dossier, /v1/parcel, or /v1/comps. Public assessor records.",
"tags": [
"real-estate",
"property-data",
"cook-county",
"public-records"
],
"inputModes": [
"application/json"
],
"outputModes": [
"application/json"
],
"x-endpoint": "https://api.ingest0r.com/v1/search/{q}",
"x-price": "$0.01",
"x-input-schema": {
"type": "object",
"required": [
"q"
],
"properties": {
"q": {
"type": "string",
"description": "Street address or partial (\u22654 chars), e.g. '1 E 113th St'"
}
}
},
"x-output-schema": {
"type": "object",
"properties": {
"query": {
"type": "string"
},
"matches": {
"type": "array",
"items": {
"type": "object",
"properties": {
"pin": {
"type": "string"
},
"prop_address": {
"type": "string"
},
"prop_city": {
"type": "string"
},
"prop_zip": {
"type": "string"
},
"score": {
"type": "number",
"description": "0\u20131 address similarity"
}
}
}
}
}
}
},
{
"id": "v1_parcel",
"name": "parcel",
"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 \u2014 with the street address joined in (the raw parcel dataset has none). The cheap single-property lookup. Source: Cook County Assessor, refreshed nightly.",
"tags": [
"real-estate",
"property-data",
"cook-county",
"public-records"
],
"inputModes": [
"application/json"
],
"outputModes": [
"application/json"
],
"x-endpoint": "https://api.ingest0r.com/v1/parcel/{pin}",
"x-price": "$0.01",
"x-input-schema": {
"type": "object",
"required": [
"pin"
],
"properties": {
"pin": {
"type": "string",
"description": "14-digit Cook County PIN (digits or dashed). Use /v1/search first if you only have a street address."
}
}
},
"x-output-schema": {
"type": "object",
"properties": {
"pin": {
"type": "string"
},
"prop_address": {
"type": "string"
},
"prop_city": {
"type": "string"
},
"prop_zip": {
"type": "string"
},
"class": {
"type": "string"
},
"township_name": {
"type": "string"
},
"nbhd_code": {
"type": "string"
},
"tax_year": {
"type": "integer"
},
"lat": {
"type": "number"
},
"lon": {
"type": "number"
}
}
}
},
{
"id": "v1_dossier",
"name": "dossier",
"description": "Complete property record for a Cook County / Chicago parcel in one paid call: address and parcel basics PLUS recorded sales & deed history, building permits, and property-tax assessment history, joined and normalized \u2014 with neighborhood/ward/school/walkability context. Includes building permits LINKED to the PIN \u2014 a join the raw permit open-data can't return (it has no PIN; links are derived here by address + geo match). One finished record, not several raw queries to stitch. For real-estate due diligence, valuation, underwriting, and lead enrichment. Nightly-fresh; property-keyed (no personal data).",
"tags": [
"real-estate",
"property-data",
"cook-county",
"public-records"
],
"inputModes": [
"application/json"
],
"outputModes": [
"application/json"
],
"x-endpoint": "https://api.ingest0r.com/v1/dossier/{pin}",
"x-price": "$0.03",
"x-input-schema": {
"type": "object",
"required": [
"pin"
],
"properties": {
"pin": {
"type": "string",
"description": "14-digit Cook County PIN (digits or dashed). Use /v1/search first if you only have a street address."
}
}
},
"x-output-schema": {
"type": "object",
"properties": {
"pin": {
"type": "string"
},
"prop_address": {
"type": "string"
},
"class": {
"type": "string"
},
"municipality": {
"type": "string"
},
"ward": {
"type": "string"
},
"sales_history": {
"type": "array",
"items": {
"type": "object",
"properties": {
"date": {
"type": "string"
},
"price": {
"type": "number"
},
"doc_no": {
"type": "string"
},
"deed_type": {
"type": "string"
}
}
}
},
"permits": {
"type": "array",
"items": {
"type": "object",
"properties": {
"issued": {
"type": "string"
},
"type": {
"type": "string"
},
"cost": {
"type": "number"
},
"desc": {
"type": "string"
}
}
}
},
"assessment_history": {
"type": "array",
"items": {
"type": "object",
"properties": {
"year": {
"type": "integer"
},
"certified": {
"type": "number"
},
"board": {
"type": "number"
}
}
}
}
}
}
},
{
"id": "v1_comps",
"name": "comps",
"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. Non-arm's-length and multi-parcel deeds are filtered out \u2014 a derived valuation you won't get from a raw open-data query. For valuation, underwriting, investment screening, and due diligence.",
"tags": [
"real-estate",
"property-data",
"cook-county",
"public-records"
],
"inputModes": [
"application/json"
],
"outputModes": [
"application/json"
],
"x-endpoint": "https://api.ingest0r.com/v1/comps/{pin}",
"x-price": "$0.10",
"x-input-schema": {
"type": "object",
"required": [
"pin"
],
"properties": {
"pin": {
"type": "string",
"description": "14-digit Cook County PIN (digits or dashed). Use /v1/search first if you only have a street address."
}
}
},
"x-output-schema": {
"type": "object",
"properties": {
"pin": {
"type": "string"
},
"comps": {
"type": "array",
"items": {
"type": "object",
"properties": {
"pin": {
"type": "string"
},
"prop_address": {
"type": "string"
},
"sale_date": {
"type": "string"
},
"sale_price": {
"type": "number"
},
"deed_type": {
"type": "string"
}
}
}
},
"implied_range": {
"type": "object",
"properties": {
"low": {
"type": "number"
},
"median": {
"type": "number"
},
"high": {
"type": "number"
},
"n": {
"type": "integer"
}
}
}
}
}
}
]
}