PostgreSQL MCP Server

A Model Context Protocol (MCP) server that provides direct PostgreSQL database query execution capabilities. This server enables custom SQL query execution against PostgreSQL databases with support for parameterized queries and configurable timeouts. This project is designed specifically for use with the Cursor IDE.

Prerequisites

• Node.js >= 18.0.0
• PostgreSQL server (for target database operations)
• Network access to target PostgreSQL instances

Installation

Installing via Smithery

To install PostgreSQL Database Query Server for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @1Levick3/postgresql-mcp-server --client claude

Manual Installation

1. Clone the repository
2. Install dependencies:

   npm install

3. Build the server:

   npm run build

4. Add to MCP settings file:

    {
      "mcpServers": {
        "postgresql-mcp": {
          "command": "node",
          "args": ["/Users/1Levick3/Desktop/postgresql-mcp-server/build/index.js"],
          "disabled": false,
          "alwaysAllow": [],
          "env": {
            "POSTGRES_CONNECTION_STRING": "postgresUrl",
            "POSTGRES_SSL_CERT_PATH": "/Users/1levick3/Desktop/root.crt"
          }
        }
      }
    }

Development

• npm run dev - Start development server with hot reload
• npm run lint - Run ESLint
• npm test - Run tests

Security Considerations

1. Connection Security
   • Uses connection pooling
   • Implements connection timeouts
   • Validates connection strings
   • Supports SSL/TLS connections

Contributing

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request