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MCP 服务器

Cook County / Chicago Property Data (free tier, no wallet needed)

com.ingest0r.api/cook-county-property-data
数据与分析 房地产 公开且可连接 MCP 2025-11-25

此 MCP 可以做什么

Provides Cook County property records, address-to-parcel lookup, sales and permit history, assessments, comparable sales, and automated valuation ranges.

功能

工具

5 工具
find_chicago_comparable_sales
Chicago comparable sales / AVM (25 free a day)
FREE for your first 25 calls each day — no wallet, no signup, just call it ($0.10 per call via x402/USDC only after that daily allowance, which resets at 00:00 UTC). Recent arm's-length comparable sales (comps) in the same Cook County assessor neighborhood and property class as the given PIN, each with its distance in metres from the subject, plus an implied low/median/high price range — a derived, lightweight automated valuation (AVM) you won't get from a raw open-data query. Thin markets widen automatically and the response reports which matching rung was used. Comps are NOT normalized for building size or age.
只读 可访问外部资源 幂等
输入模式 
{'type': 'object', 'title': 'find_chicago_comparable_salesArguments', 'required': ['pin'], 'properties': {'pin': {'type': 'string', 'title': 'Pin', 'pattern': '^[0-9][0-9\\-]{8,19}$', 'description': '10- or 14-digit Cook County PIN (digits; dashes allowed, e.g. 14-08-120-017-0000). If you only have a street address, call search_chicago_property_by_address first.'}}}
get_cook_county_parcel
Cook County parcel record (25 free a day)
FREE for your first 25 calls each day — no wallet, no signup, just call it ($0.01 per call via x402/USDC only after that daily allowance, which resets at 00:00 UTC). Cook County, IL parcel record for a 10- or 14-digit PIN. Returns: pin, prop_address, prop_city, prop_zip, class, township_name, nbhd_code, municipality, ward, police_district, census_tract_geoid, school_elementary_district, school_secondary_district, walk_score_cmap, airport_noise_dnl, lat, lon, tax_year. The cheap single-property lookup — use get_cook_county_property_dossier for sales, permits and assessments.
只读 可访问外部资源 幂等
输入模式 
{'type': 'object', 'title': 'get_cook_county_parcelArguments', 'required': ['pin'], 'properties': {'pin': {'type': 'string', 'title': 'Pin', 'pattern': '^[0-9][0-9\\-]{8,19}$', 'description': '10- or 14-digit Cook County PIN (digits; dashes allowed, e.g. 14-08-120-017-0000). If you only have a street address, call search_chicago_property_by_address first.'}}}
get_cook_county_property_dossier
Cook County property dossier (25 free a day)
FREE for your first 25 calls each day — no wallet, no signup, just call it ($0.03 per call via x402/USDC only after that daily allowance, which resets at 00:00 UTC). Full Cook County / Chicago property dossier for a PIN: parcel basics, recorded sales & deed history, building permits, property-tax assessment history, and neighborhood / ward / school / walkability context — the one-call due-diligence record. Permits are LINKED to the PIN here (the raw permit open-data has no PIN; links are derived by address + geo match), so this is a finished record you cannot reproduce with raw open-data queries. Note assessment values are ASSESSED values (~10% of market for most residential classes), not market prices — see assessment_note in the response.
只读 可访问外部资源 幂等
输入模式 
{'type': 'object', 'title': 'get_cook_county_property_dossierArguments', 'required': ['pin'], 'properties': {'pin': {'type': 'string', 'title': 'Pin', 'pattern': '^[0-9][0-9\\-]{8,19}$', 'description': '10- or 14-digit Cook County PIN (digits; dashes allowed, e.g. 14-08-120-017-0000). If you only have a street address, call search_chicago_property_by_address first.'}}}
get_free_sample
Free sample of the Chicago / Cook County property data ($0)
FREE ($0, unlimited, no payment, no wallet): a fixed, representative example of every response shape this server returns for Cook County / Chicago property data — address search, parcel, dossier (recorded sales, building permits, assessment history) and comparable sales. Call this FIRST to validate the data structure before anything else. For REAL verified data at $0, call get_cook_county_property_dossier with one of the always-free example PINs 09253060510000, 09253140190000, 09253050270000.
只读 可访问外部资源 幂等
输入模式 
{'type': 'object', 'title': 'get_free_sampleArguments', 'properties': {}}
search_chicago_property_by_address
Chicago / Cook County address to parcel PIN (always free)
ALWAYS FREE, unlimited, no wallet and no signup. Resolve a Cook County / Chicago street address (full or partial) to its parcel PIN(s) — ranked candidates with address, city, ZIP, a match score and a match_quality flag. A trailing city/state/ZIP is fine ('1 E 113th St, Chicago, IL 60628'). CHECK match_quality: 'exact' is certain, 'likely' shares the house number, and 'weak' means NO candidate matched the house number — do not rely on a weak hit. Call this FIRST when you have an address but not a PIN, then pass a returned pin to get_cook_county_parcel / get_cook_county_property_dossier / find_chicago_comparable_sales. Coverage: Cook County, Illinois — Chicago plus 100+ suburbs including Evanston, Oak Park, Cicero and Skokie.
只读 可访问外部资源 幂等
输入模式 
{'type': 'object', 'title': 'search_chicago_property_by_addressArguments', 'required': ['address'], 'properties': {'address': {'type': 'string', 'title': 'Address', 'minLength': 4, 'description': "Full or partial Cook County / Chicago street address, e.g. '1 E 113th St'. Minimum 4 characters."}}}
历史

近期工具变更

已添加
find_chicago_comparable_sales
2026年9月17日 12:35
已添加
get_cook_county_property_dossier
2026年9月17日 12:35
已添加
get_cook_county_parcel
2026年9月17日 12:35
已添加
search_chicago_property_by_address
2026年9月17日 12:35
已添加
get_free_sample
2026年9月17日 12:35
发现

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