PropTech

A production-ready Model Context Protocol (MCP) server that lets a Claude-powered agent orchestrate your full property maintenance workflow — built on top of an existing n8n + WhatsApp automation system.

┌─────────────────────────────────────────────────────────┐
│                  Claude Agent / Desktop                  │
└────────────────────────┬────────────────────────────────┘
                         │  MCP (stdio / SSE)
┌────────────────────────▼────────────────────────────────┐
│             MCP PropTech Maintenance Server              │
│                                                         │
│  get_open_tickets   update_maintenance_status           │
│  notify_tenant      escalate_to_vendor                  │
└──────┬──────────────────────────────────┬───────────────┘
       │                                  │
┌──────▼──────┐                  ┌────────▼──────────┐
│  Ticket DB  │                  │   Integrations    │
│ (in-memory  │                  │  ┌─────────────┐  │
│  → Postgres │                  │  │  n8n        │  │
│  in prod)   │                  │  │  Webhooks   │  │
└─────────────┘                  │  ├─────────────┤  │
                                 │  │  Twilio     │  │
                                 │  │  WhatsApp   │  │
                                 │  └─────────────┘  │
                                 └───────────────────┘

Tools

Tool	Description
get_open_tickets	Query tickets filtered by status, priority, category, property
update_maintenance_status	Drive tickets through the lifecycle with audit notes
notify_tenant	Send WhatsApp messages via 5 templates (acknowledgement, scheduled, update, resolved, delay)
escalate_to_vendor	Assign vendor, trigger n8n workflow, notify tenant in one call

Quick start

# 1. Install dependencies
npm install

# 2. Configure environment
cp .env.example .env
# Fill in ANTHROPIC_API_KEY, Twilio creds, n8n webhook URLs

# 3. Run the agent (single pass over the ticket queue)
npm run agent

# 4. Run as a daemon (checks every 5 minutes)
npm run agent:dev -- --daemon

Claude Desktop integration

Add this to your claude_desktop_config.json:

{
  "mcpServers": {
    "proptech-maintenance": {
      "command": "npx",
      "args": ["tsx", "/absolute/path/to/MCPPropTech/src/mcp-server/index.ts"],
      "env": {
        "ANTHROPIC_API_KEY": "sk-ant-...",
        "TWILIO_ACCOUNT_SID": "AC...",
        "TWILIO_AUTH_TOKEN": "...",
        "TWILIO_WHATSAPP_FROM": "whatsapp:+14155238886",
        "N8N_WEBHOOK_MAINTENANCE": "https://your-n8n.com/webhook/maintenance",
        "N8N_WEBHOOK_ESCALATE": "https://your-n8n.com/webhook/escalate"
      }
    }
  }
}

Then from Claude Desktop you can say things like:

• "Show me all open emergency tickets"
• "Escalate the burst pipe in unit 3B to a plumber"
• "Send Marcus in 7A a WhatsApp update on his AC ticket"

Architecture

MCP Server (src/mcp-server/)

The server runs over stdio (for Claude Desktop / agent SDK) and exposes the four tools above. Swap StdioServerTransport for SSEServerTransport to serve over HTTP for remote deployments.

Ticket Store (src/data/)

An in-memory store with 6 seed tickets covering every status and priority. Replace TicketStore internals with a Postgres/Supabase/Airtable adapter for production — the tool handlers only call the store interface.

n8n Integration (src/integrations/n8n.ts)

Fires webhooks to two n8n endpoints:

• Maintenance webhook — on every status change and tenant notification
• Escalation webhook — when a vendor is assigned

Your n8n workflows handle the rest: emailing vendors, updating spreadsheets, creating calendar invites, sending owner reports.

WhatsApp / Twilio (src/integrations/whatsapp.ts)

Uses the Twilio API to send WhatsApp messages. Gracefully falls back to simulation mode (console logging) when credentials are not set — perfect for demos and local development.

Claude Agent (src/agent/maintenance-agent.ts)

A full agentic loop using @anthropic-ai/sdk that:

1. Connects to the MCP server via StdioClientTransport
2. Fetches available tools and converts them to the Anthropic tool format
3. Runs an agentic loop until Claude stops calling tools
4. Logs each tool call and result to the console

Lifecycle state machine

open ──→ in_progress ──→ resolved ──→ closed
  │         │                ↑
  │         └──→ awaiting_tenant
  │                   │
  └──→ escalated ←────┘
           │
           └──→ in_progress / resolved

Environment variables

Variable	Required	Description
ANTHROPIC_API_KEY	Agent only	Claude API key
TWILIO_ACCOUNT_SID	Optional	Twilio account SID for WhatsApp
TWILIO_AUTH_TOKEN	Optional	Twilio auth token
TWILIO_WHATSAPP_FROM	Optional	Sender WhatsApp number
N8N_WEBHOOK_MAINTENANCE	Optional	n8n status-change webhook URL
N8N_WEBHOOK_ESCALATE	Optional	n8n vendor escalation webhook URL
N8N_API_KEY	Optional	n8n API key (if required by your instance)
VENDOR_CONTACTS	Optional	JSON map overriding default vendor directory
AGENT_INTERVAL_MS	Optional	Daemon poll interval (default: 300000 = 5 min)