NJ Realtor MCP — Frontier Edition

A production-grade Model Context Protocol server for NJ real estate agents.
20 tools. 15+ data sources. Crawl4AI web crawling. Deep research mode. Full NJ-specific intelligence.

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What This Does

Claude gains 20 native tools covering the full NJ real estate workflow:

Category	Tools
Search & Discovery	search_listings, similar_homes, foreclosure_radar
Valuation	generate_cma, price_history, tax_assessment_lookup
Intelligence	neighborhood_report, school_district_report, flood_risk_report, commute_analysis
Investment	investment_analysis, rental_comps, mortgage_calculator
Agent Tools	draft_listing, schedule_showing, client_match, send_client_alert
Market Data	market_pulse, permit_lien_lookup
Research	deep_research (orchestrated multi-step AI research)

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Data Sources (Full Map)

MLS / Listing Data

Source	What	How
GSMLS (Garden State MLS)	NJ's largest MLS — Bergen, Essex, Morris, Union, Passaic, Hudson, Somerset, Sussex, Warren	RESO Web API (OAuth2)
Bright MLS	South Jersey — Camden, Burlington, Atlantic, Cape May, Cumberland, Salem, Gloucester	Bright MLS API
Zillow	Zestimate, price history, public listing details	Crawl4AI (Playwright)
Redfin	Market trends, sold data CSVs, DOM stats	CSV export + Crawl4AI
Realtor.com	Competing listings, agent data	Crawl4AI

Public Records (NJ-Specific)

Source	What	How
NJ MOD-IV	Statewide property tax assessment database (all 565 municipalities)	Annual bulk download + API
NJ Courts Portal	Lis pendens, tax liens, judgments, foreclosures	Crawl4AI (PACER-style search)
NJ DEP GIS	Flood hazard delineations, wetlands, brownfields, contamination sites	ArcGIS REST API
NJ Flood Mapper	FEMA flood zones, base flood elevation, advisory maps	Crawl4AI
County Clerk portals	Deed records, mortgage filings (20 NJ counties each have own portal)	Crawl4AI per county
NJ OpenData	Municipal boundaries, zoning, permits, demographics	Socrata API (data.nj.gov)

Neighborhood Intelligence

Source	What	How
US Census ACS	Income, age, education, race, housing tenure (block group level)	Census API (free, key required)
GreatSchools	School ratings 1-10, test scores, enrollment	GreatSchools API
NJ DOE Report Card	District Factor Group (DFG), NJSLA scores, graduation rates	NJ OpenData / Crawl4AI
Walk Score	Walkability, transit score, bike score	Walk Score API
SpotCrime	Neighborhood crime incidents (0.5mi radius)	Crawl4AI / SpotCrime API
Google Places	Nearby grocery, restaurants, hospitals, parks, gyms	Google Maps Platform

Market & Financial

Source	What	How
FRED (Federal Reserve)	30yr/15yr mortgage rates, housing price index, CPI	FRED API (free)
ATTOM Data	Property deed/mortgage history, foreclosure data, AVM	ATTOM API (paid)
HouseCanary	Property-level AVM, market analytics, risk scores	HouseCanary API (paid)
Freddie Mac PMMS	Weekly primary mortgage market survey	Public Excel download
Apartments.com	Active rental listings for rental comp analysis	Crawl4AI
Rentometer	Rental comp benchmark	Rentometer API

Transit / Commute

Source	What	How
NJ Transit GTFS	Train/bus static schedules (rail lines: NEC, NJCL, Montclair-Boonton, Morris-Essex, Raritan Valley, etc.)	Public GTFS feed
NJ Transit Real-Time	Live train delays, cancellations	NJ Transit Vision API
Google Maps Platform	Driving times, traffic, transit routing	Maps API
PATH (Port Authority)	Hudson County to NYC subway times	GTFS

Communications & Calendar

Source	What	How
Twilio	SMS showing confirmations, client property alerts	Twilio API
SendGrid	Email CMAs (PDF), market digest newsletters	SendGrid API
Google Calendar	Showing scheduling, availability check	Google Calendar API (OAuth2)

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Quick Start

Prerequisites

• Docker + Docker Compose
• Node.js 20+
• API keys (see .env.example)

1. Clone and configure

git clone <repo>
cd nj-realtor-mcp
cp .env.example .env
# Edit .env with your API keys

2. Start the full stack

cd docker
docker compose up -d

This starts:

• PostgreSQL 16 with pgvector + PostGIS (geo queries + semantic search)
• Redis (caching + job queue)
• Crawl4AI (async browser-based crawler with anti-bot mode)
• MCP Server (the 20 tools)
• Cron service (background data sync)

3. Initialize the database

docker exec nj_realtor_db psql -U realtor -d nj_realtor -f /docker-entrypoint-initdb.d/01_schema.sql
node scripts/seed_nj_zips.js   # seeds all NJ ZIP codes with county, transit, tax rate data

4. Seed MLS data

node scripts/seed_crawl.js   # queues initial crawl jobs for NJ listings

5. Register with Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "nj-realtor": {
      "command": "node",
      "args": ["/path/to/nj-realtor-mcp/src/index.js"],
      "env": {
        "POSTGRES_URL": "postgresql://realtor:pass@localhost:5432/nj_realtor",
        "REDIS_URL": "redis://localhost:6379",
        "CRAWL4AI_URL": "http://localhost:11235"
      }
    }
  }
}

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Example Claude Conversations

Property Due Diligence

"Run deep research on 47 Oak Avenue, Rumson NJ 07760"

Claude will: pull price history, run CMA, check permits/liens, assess flood risk, analyze commute to NYC, pull school district data, check for rent control (not applicable for SFR), and synthesize into a full due diligence report.

Buyer Matching

"I have a new buyer, Sarah Chen, looking for a 3-4BR under $750k in Monmouth County with good schools and under 60 min train to NYC. Set up alerts."

Claude will: save buyer profile, search active listings, rank by match score, send initial SMS with top 5 matches, and enable ongoing alerts for new listings.

Investment Analysis

"Analyze 22 Main St, Asbury Park NJ as a rental investment. Purchase price $620k."

Claude will: estimate market rent (Asbury Park has strong rental demand + rent control), run full NOI/cap rate/cash-on-cash analysis, flag NJ's high property tax rate, check for rent control, and calculate 5-year IRR.

Market Report

"Give me a market pulse for Monmouth County for the last 30 days"

Claude will: pull median prices, DOM, inventory, list-to-sold ratios, YoY changes, and write a 3-sentence market narrative for your newsletter.

Listing Copy

"Draft a listing for 8 Harbor View Dr, Sea Bright NJ. Highlights: oceanfront, fully renovated, elevator, 4BR, $3.2M."

Claude will: generate MLS description (500 words), Instagram caption, Facebook post, and 5 key feature bullets — all optimized for waterfront luxury segment.

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NJ-Specific Intelligence

This MCP was built with deep NJ market knowledge baked in:

• Property taxes: NJ has the highest effective rate in the US (avg 2.23%). Every valuation and investment analysis explicitly accounts for this.
• Flood risk: Post-Hurricane Sandy, flood zone classification is critical for NJ coastal/shore properties (Ocean, Monmouth, Atlantic counties especially). We integrate FEMA + NJ DEP + sea level rise projections.
• School districts: NJ's #1 buyer decision factor. We integrate NJ DOE District Factor Groups (A through J), NJSLA scores, and GreatSchools ratings.
• NJ Transit: Door-to-door commute time to NYC Penn Station is a core value driver. We compute actual train journey times for 163 NJ rail stations.
• Rent control: ~100 NJ municipalities have rent control. Every investment analysis flags this automatically.
• 565 municipalities: Each has its own tax rate, zoning rules, and permit system. Our tax lookup normalizes across all of them.
• Mansion tax: NJ imposes a 1% mansion tax on residential sales over $1M. Our mortgage and investment calculators include this.
• Landlord-tenant law: NJ is tenant-friendly (Anti-Eviction Act). Investment analyses note this risk.

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Architecture

Claude Desktop
    │
    ▼ MCP (stdio)
NJ Realtor MCP Server (Node.js)
    │
    ├── PostgreSQL 16 + pgvector + PostGIS
    │       ├── properties table (MLS + ATTOM merged)
    │       ├── sales_history (deed records)
    │       ├── tax_assessments (NJ MOD-IV)
    │       ├── permits_liens (NJ Courts + municipal)
    │       ├── market_stats (pre-aggregated)
    │       ├── clients (buyer profiles + alert criteria)
    │       └── crawl_jobs (queue for background crawling)
    │
    ├── Redis (6hr TTL cache for CMAs, neighborhood reports)
    │
    └── Crawl4AI (Docker, Playwright-based)
            ├── Zillow property pages
            ├── NJ county tax/deed portals (20 counties)
            ├── NJ Courts lis pendens search
            ├── NJ Flood Mapper
            ├── Apartments.com rental listings
            ├── NJ Transit schedule pages
            └── SpotCrime crime data

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Roadmap

• [ ] Matterport 3D tour integration (auto-generate for listed properties)
• [ ] NJ short-term rental ordinance tracker (Airbnb viability by municipality)
• [ ] HOA document analyzer (AI reads CC&Rs and flags red flags)
• [ ] Contractor permit history (who pulled permits, licensed/unlicensed work)
• [ ] Solar potential analysis (NJ has strong solar incentives — SREC program)
• [ ] 1031 exchange tracker (identify replacement properties meeting exchange criteria)
• [ ] MLS listing auto-publish (post approved listings directly to GSMLS)
• [ ] Offer analysis tool (compare multiple offers with net-to-seller calculation)
• [ ] Property condition report parser (AI reads inspection reports, extracts issues)
• [ ] NJ ANCHOR benefit calculator (NJ property tax relief program for homeowners)