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MCP server giving Claude AI access to 20+ NYC public-record datasets across 9 city agencies via 18 tools — NYC property due diligence in plain English: violations, liens, sales, ownership, permits, rent stabilization, and more.
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MCP server that gives Claude AI access to 20+ NYC public record datasets for real estate due diligence. Ask Claude about any NYC property in plain English — violations, liens, sales history, ownership, permits, rent stabilization, zoning, fire history, crime data, and more.
This is a due diligence tool, not an appraisal tool. It surfaces public record data only; it does not estimate property values.
The fastest way to try it: open nycpropertyintel.com/chat and ask about any NYC property in plain English. 3 free queries, no signup (resets daily) — no install, no token, and no Claude client needed.
"What violations does 123 Atlantic Ave, Brooklyn have?"
Sign up at nycpropertyintel.com to get a free trial token (10 queries/day for 30 days, including up to 5 full due-diligence reports). Then:
Claude Code — run once in your terminal:
claude mcp add --transport http nyc-property-intel \
"https://nyc-property-intel-production.up.railway.app/mcp" \
--header "Authorization: Bearer YOUR_TOKEN" \
--scope user
Claude Desktop — add to claude_desktop_config.json (Settings → Developer → Edit Config):
{
"mcpServers": {
"nyc-property-intel": {
"type": "http",
"url": "https://nyc-property-intel-production.up.railway.app/mcp",
"headers": {
"Authorization": "Bearer YOUR_TOKEN"
}
}
}
}
Then ask Claude:
"Look up 350 5th Ave, Manhattan"
"What violations does 123 Atlantic Ave, Brooklyn have?"
"Full due diligence on 123 Atlantic Ave, Brooklyn"
git clone https://github.com/ccedacero/nyc-property-intel.git
cd nyc-property-intel
uv sync
cp .env.example .env
# Edit .env:
# DATABASE_URL=postgresql://nycdb:nycdb@localhost:5432/nycdb
# NYC_GEOCLIENT_SUBSCRIPTION_KEY=your_key (optional, improves address resolution)
# SOCRATA_APP_TOKEN=your_token (optional, higher rate limits for 311/FDNY/NYPD)
Selected from shared topics, language and repository description—not editorial ratings.
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76/100 healthOption A: Restore from dump (~10 min)
createuser -s nycdb 2>/dev/null; createdb -O nycdb nycdb 2>/dev/null
pg_restore -U nycdb -d nycdb --no-owner --jobs=4 data/nycdb.dump
Option B: Load from source (~2.5 hours)
createuser -s nycdb 2>/dev/null; createdb -O nycdb nycdb 2>/dev/null
chmod +x scripts/seed_nycdb.sh
./scripts/seed_nycdb.sh # all phases
# or incrementally:
./scripts/seed_nycdb.sh --phase A # core data (~30 min)
./scripts/seed_nycdb.sh --phase B # sales + DOB (~45 min)
./scripts/seed_nycdb.sh --phase C # ACRIS + permits (~90 min)
Then create indexes and materialized views:
psql -U nycdb -d nycdb -f scripts/create_indexes.sql
psql -U nycdb -d nycdb -f scripts/create_views.sql
{
"mcpServers": {
"nyc-property-intel": {
"command": "uv",
"args": ["run", "nyc-property-intel"],
"cwd": "/absolute/path/to/nyc-property-intel",
"env": {
"DATABASE_URL": "postgresql://nycdb:nycdb@localhost:5432/nycdb"
}
}
}
}
The .mcp.json in the project root auto-registers when you open this directory. Or add manually to ~/.claude.json:
{
"mcpServers": {
"nyc-property-intel": {
"command": "uv",
"args": ["run", "nyc-property-intel"],
"cwd": "/absolute/path/to/nyc-property-intel"
}
}
}
| Tool | Description |
|---|---|
lookup_property | Resolve any NYC address or BBL to a full property profile: owner, building class, zoning, FAR, assessed value, lot dimensions. Always call this first. |
get_property_issues | HPD housing violations (Class A/B/C), DOB building code violations, and ECB/OATH monetary penalties. Filter by severity, status, and date. |
get_property_history | DOF sales records and ACRIS deed transfers. Price trajectory, buyer/seller names, document types going back to 2003. |
get_hpd_complaints | Tenant-reported HPD complaints — leading indicators of building distress before formal violations are issued. |
get_hpd_litigations | HPD housing court cases, open judgements, and harassment findings against building owners. |
get_hpd_registration | Legal owner, managing agent, and head officer registration records. |
get_building_permits | DOB job filings: new buildings, alterations, demolitions, sign permits. Status, cost estimate, applicant name. |
get_liens_and_encumbrances | DOF tax lien sale list entries and ACRIS mortgage records. Outstanding liens, lender names, amounts, satisfactions. |
get_tax_info | Tax assessments, market value estimates, taxable value, and active exemptions (421a, J-51, STAR). |
get_rent_stabilization | Rent-stabilized unit counts by year (2007–2017). Trend analysis for deregulation signal. |
search_comps | Comparable sales by zip code. Filter by building class, price, date. Includes quarterly market stats. |
search_neighborhood_stats | Area-level aggregates: property stock, median sale prices, violation rates, rent stabilization share. |
get_fdny_fire_incidents | FDNY fire and emergency incident history. Fire type, alarm level, spread, casualties, duration. 2013–present, loaded from NYC Open Data. |
get_311_complaints | 311 service requests at or near a property. Noise, rodents, heat, illegal dumping, and 200+ types. 2010–present, loaded from NYC Open Data. |
get_evictions | Marshal-executed evictions by address. Residential and commercial. 2017–present, loaded from NYC Open Data. |
get_dob_complaints | DOB complaints filed before formal violations — the earliest public signal of construction or safety issues. |
get_nypd_crime | NYPD crime complaints within a configurable radius (default 300 m ≈ 3 blocks). Felony/misdemeanor breakdown, top offenses, year-over-year trend. |
analyze_property | Full due diligence summary — runs all sub-queries concurrently. Property profile, FAR analysis, financials, risk factors, rent stabilization, comparable sales, and key observations. |
Core data (~19 million rows) is loaded from nycdb. All datasets are loaded into PostgreSQL. Socrata API used as fallback only.
| Dataset | Agency | Notes |
|---|---|---|
| PLUTO | DCP | Property profiles, zoning, FAR, building class |
| PAD | DCP | Address-to-BBL resolution |
| HPD Violations | HPD | Housing code violations by class and status |
| HPD Complaints | HPD | Tenant complaint records |
| HPD Registrations | HPD | Owner/agent/officer registration |
| HPD Litigations | HPD | Housing court cases |
| DOB Violations | DOB | Building code violations |
| ECB Violations | OATH/ECB | Environmental Control Board penalties |
| DOF Rolling Sales | DOF | Recent property sales |
| DOF Annual Sales | DOF | Historical sales 2003–present |
| DOF Assessments | DOF | Tax valuations and assessment rolls |
| DOF Exemptions | DOF | Tax exemption records (421a, J-51, STAR) |
| DOF Tax Liens | DOF | Annual lien sale list |
| Rent Stabilization | DOF | Stabilized unit counts by building, 2007–2017 (derived from DOF tax bills via taxbills.nyc / JustFix) |
| ACRIS | DOF | Deeds, mortgages, liens, satisfactions, UCC filings |
| FDNY Fire Incidents | FDNY | 2013–present |
| 311 Service Requests | 311/DOITT | 2010–present |
| Marshal Evictions | DOI | 2017–present |
| DOB Complaints | DOB | Loaded from NYC Open Data |
| NYPD Crime Data | NYPD | 2006–present, geospatial radius |
src/nyc_property_intel/
app.py # FastMCP instance + system prompt
server.py # Entry point: lifespan, auth middleware, tool registration
config.py # pydantic-settings (reads .env / environment variables)
db.py # asyncpg connection pool + query helpers
auth.py # Token validation, rate limiting, usage logging
analytics.py # PostHog event capture (fire-and-forget)
geoclient.py # NYC GeoClient API + PAD fallback for address resolution
socrata.py # Socrata Open Data API client — fallback for FDNY, 311, NYPD, evictions
loops_webhook.py # Loops.so webhook → auto-provision trial tokens on signup
tools/
lookup.py # lookup_property
issues.py # get_property_issues
history.py # get_property_history
hpd_complaints.py # get_hpd_complaints
hpd_litigations.py# get_hpd_litigations
hpd_registration.py# get_hpd_registration
permits.py # get_building_permits
liens.py # get_liens_and_encumbrances
tax.py # get_tax_info
rentstab.py # get_rent_stabilization
comps.py # search_comps
neighborhood.py # search_neighborhood_stats
fdny.py # get_fdny_fire_incidents
complaints_311.py # get_311_complaints
evictions.py # get_evictions
dob_complaints.py # get_dob_complaints
nypd_crime.py # get_nypd_crime
analysis.py # analyze_property
scripts/
seed_nycdb.sh # Downloads and loads all nycdb datasets
create_indexes.sql # Performance indexes on critical columns
create_views.sql # Materialized views for fast property lookup
manage_tokens.py # CLI for provisioning and managing customer tokens
uv run pytest tests/test_utils.py -q # unit tests (no DB needed)
uv run pytest tests/ -m integration -q # integration tests (needs live DB)
uv run ruff check src/ # lint
uv run nyc-property-intel # run server locally (stdio)
NYC Property Intel provides building and property data from public city records only. It does not provide demographic data, tenant screening, or any analysis based on protected characteristics. See nycpropertyintel.com/#fair-housing for the full policy.
MIT
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