TechStart CRM — MCP Server

Connect your business database to Claude using the Model Context Protocol. Natural language queries, CRUD operations, and analytics — all through conversation.

Architecture

graph LR
    A["Claude Desktop / Code"] -- "stdio" --> B["MCP Server<br/>(Node.js + TypeScript)"]
    B -- "Neon Serverless Driver" --> C["PostgreSQL<br/>(Neon)"]
    C -- "query results" --> B
    B -- "tool responses" --> A

    style A fill:#6366f1,stroke:#4338ca,color:#fff
    style B fill:#0ea5e9,stroke:#0284c7,color:#fff
    style C fill:#22c55e,stroke:#16a34a,color:#fff

Claude communicates with the MCP server over stdio. The server translates natural language tool calls into parameterized SQL queries via the Neon serverless driver and returns structured results that Claude interprets for the user.

Related MCP server: MCP Database Server

Demo

Querying open tickets

Creating a ticket through conversation

Business summary dashboard

Features

Customers

Tickets

Products

Analytics

Schema Introspection

Tech Stack

• Runtime: Node.js + TypeScript

• MCP SDK: @modelcontextprotocol/sdk

• Database: Neon Postgres (@neondatabase/serverless)

• Validation: Zod

• Linter/Formatter: Biome

• Transport: stdio

Setup

1. Clone and install

git clone https://github.com/voyagi/upwork-mcp-server.git
cd upwork-mcp-server
npm install

2. Create a Neon database

Go to neon.tech and create a new project. Copy the connection string from the Connection Details panel.

3. Configure environment

cp .env.example .env

Fill in your Neon connection string:

• DATABASE_URL — your Neon Postgres connection string (e.g., postgresql://user:pass@ep-xxx.region.aws.neon.tech/neondb?sslmode=require)

4. Create tables and seed data

npm run build
node seed/run-seed.mjs

This creates the tables and populates the database with 22 customers, 12 products, and 32 support tickets.

5. Run

npm start

The server starts listening on stdio. To verify it works, connect it to Claude Desktop (see below).

Claude Desktop Integration

Add the following to your Claude Desktop config file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

• Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "techstart-crm": {
      "command": "node",
      "args": ["/absolute/path/to/upwork-mcp-server/dist/index.js"],
      "env": {
        "DATABASE_URL": "postgresql://user:pass@ep-xxx.region.aws.neon.tech/neondb?sslmode=require"
      }
    }
  }
}

Replace /absolute/path/to/upwork-mcp-server with the actual path where you cloned the repository, and fill in your Neon connection string.

Demo Conversation

Once connected, try a conversation like this:

User: What data do you have access to?

Claude: [Reads schema://tables] I have access to a CRM database with three tables: customers (name, email, company, status), tickets (subject, priority, status, linked to customers), and products (name, category, pricing). I can query, create, and update records across all of them.

User: How are things looking today?

Claude: [Calls get_summary] Here is your dashboard overview:

• Customers: 22 total — 15 active, 4 inactive, 3 leads

• Tickets: 32 total — 23 open (4 urgent, 7 high priority), 9 closed

• Products: 12 items across 3 categories, total catalog value of $2,348.00

• This week: 2 new customers signed up, 0 tickets resolved

The 4 urgent tickets should be your first priority.

User: Show me the urgent tickets.

Claude: [Calls list_tickets with status: "open", priority: "urgent"] There are 4 urgent open tickets:

1. URGENT: data export blocking quarterly report — Apex Manufacturing (Marcus Reed), created 1 day ago

2. SSL certificate renewal failing — Ironclad Security (David Kim), created 2 days ago

3. Checkout integration dropping orders during peak hours — Velvet Retail (Amira Hassan), created 2 days ago

4. Suspicious login attempts from unknown IPs — Ironclad Security (David Kim), created 1 day ago

The SSL certificate issue is customer-facing — want me to look into any of these?

User: Close the SSL ticket. We renewed the certificate and updated the configuration.

Claude: [Calls close_ticket with resolution: "SSL certificate renewed and server configuration updated. Verified HTTPS connectivity restored."] Done. The SSL certificate ticket for Ironclad Security has been closed with your resolution note. That brings your urgent count down to 3.

User: Before we onboard them — what integration options do we offer?

Claude: [Calls search_products with query: "integration"] We have two integration-related products:

1. API Access — $79.00/mo — REST and GraphQL API access, 10K requests/day, webhook integrations

2. Custom Integrations — $149.00/mo — Custom API integrations with your existing tools (Salesforce, HubSpot, Jira, etc.)

The API Access add-on covers standard integrations. If they need connections to specific internal systems, the Custom Integrations package includes hands-on setup.

User: We just signed Pinnacle Retail as a new customer. Contact is Dana Park, dana@pinnacleretail.com.

Claude: [Calls create_customer with name: "Dana Park", email: "dana@pinnacleretail.com", company: "Pinnacle Retail"] Created. Dana Park from Pinnacle Retail has been added as an active customer. Would you like to create a welcome ticket or onboarding task for them?

User: What is the updated summary now?

Claude: [Calls get_summary] Updated numbers after your changes:

• Customers: 23 total — 16 active, 4 inactive, 3 leads (up from 22)

• Tickets: 32 total — 22 open (3 urgent, 7 high), 10 closed

• This week: 3 new customers, 1 ticket resolved

One fewer urgent ticket and one more customer compared to a few minutes ago. The 3 remaining urgent tickets are the data export blocking quarterly report (Marcus Reed), checkout integration dropping orders (Amira Hassan), and suspicious login attempts (David Kim).

Database Schema

-- Customers: name, email, company, status (active/inactive/lead)
create table customers (
  id            uuid primary key default gen_random_uuid(),
  name          text not null,
  email         text not null unique,
  company       text,
  status        text not null default 'active'
                check (status in ('active', 'inactive', 'lead')),
  created_at    timestamptz default now()
);

-- Products: catalog with pricing in cents
create table products (
  id            uuid primary key default gen_random_uuid(),
  name          text not null,
  category      text not null,
  price_cents   integer not null,
  description   text,
  created_at    timestamptz default now()
);

-- Tickets: support tickets linked to customers
create table tickets (
  id            uuid primary key default gen_random_uuid(),
  customer_id   uuid references customers(id) on delete cascade,
  subject       text not null,
  description   text,
  status        text not null default 'open'
                check (status in ('open', 'in_progress', 'closed')),
  priority      text not null default 'medium'
                check (priority in ('low', 'medium', 'high', 'urgent')),
  resolution    text,
  created_at    timestamptz default now(),
  closed_at     timestamptz
);

Development

npm run dev      # Run with hot reload (tsx watch)
npm run build    # Compile TypeScript
npm run start    # Run compiled version
npm run check    # Biome lint + format

Testing

npm test            # Run all tests once
npm run test:watch  # Run tests in watch mode during development

The test suite covers:

• Server registration - verifies all 11 tools and the schema resource are registered

• Schema resource - validates the database schema JSON structure and relationships

• Customer tools - CRUD operations, duplicate email handling, empty results

• Ticket tools - creation with customer name resolution, closing, state validation

• Product tools - listing with price formatting, search, empty results

• Analytics - dashboard aggregation with parallel query batching

• Validation - enum schemas with custom error messages

• Response helpers - MCP response formatting utilities

• Formatters - price and product display formatting

All tool tests use InMemoryTransport for full MCP client/server integration testing with a mocked database backend, so no database connection is needed.

E2E Testing

node seed/e2e-test.mjs   # 14 tests against live Neon database

Troubleshooting

"Missing required environment variable: DATABASE_URL" You haven't created the .env file. Copy .env.example to .env and fill in your Neon connection string.

"Failed to connect to database" The server starts but can't reach Neon. Check that:

• DATABASE_URL is your full Neon connection string (e.g., postgresql://user:pass@ep-xxx.region.aws.neon.tech/neondb?sslmode=require)

• Your Neon project is active (free-tier projects suspend after inactivity but wake automatically on connection)

"relation customers does not exist" or similar The database tables haven't been created. Run node seed/run-seed.mjs to create tables and seed demo data.

Server starts but Claude doesn't see the tools Verify the path in claude_desktop_config.json points to the compiled dist/index.js (not src/index.ts). Run npm run build first if you haven't.

License

MIT