MySQL MCP Server for Cursor IDE

This is a Model Context Protocol (MCP) server that allows Cursor IDE to interact with MySQL databases. It provides tools for connecting to databases, executing queries, exploring schemas, and managing database operations.

Features

• 🔌 Database Connection Management: Connect to and disconnect from MySQL databases
• 🔍 Query Execution: Execute SQL queries and get results
• 📋 Schema Exploration: List tables and view table schemas
• 🗄️ Database Management: List available databases and switch between them
• 🛡️ Error Handling: Comprehensive error handling and validation
• 🔧 Environment Configuration: Secure credential management via environment variables

Prerequisites

• Node.js (version 18 or higher)
• MySQL server running and accessible
• Cursor IDE

Installation

1. Clone or download this repository

   git clone <repository-url>
   cd mysql-mcp

2. Install dependencies

   npm install

3. Configure database connection

   cp env.example .env

   Edit the .env file with your MySQL database credentials:

   DB_HOST=localhost
   DB_USER=your_username
   DB_PASSWORD=your_password
   DB_NAME=your_database
   DB_PORT=3306

Setup with Cursor IDE

1. Configure MCP in Cursor:

   • Open Cursor IDE
   • Go to Settings (Ctrl/Cmd + ,)
   • Search for "MCP" or "Model Context Protocol"
   • Add the path to your mcp-config.json file

2. Alternative: Use the MCP configuration directly:

   • Copy the contents of mcp-config.json to your Cursor MCP settings
   • Make sure the path to src/server.js is correct

Available Tools

The MCP server provides the following tools that Cursor can use:

1. connect

Connect to a MySQL database.

• Parameters: host, user, password, database, port (optional, default: 3306)

2. disconnect

Disconnect from the current database connection.

3. execute_query

Execute a SQL query and return results.

• Parameters: query (SQL query string)

4. get_tables

List all tables in the current database.

5. get_table_schema

Get the schema information for a specific table.

• Parameters: table_name

6. get_databases

List all available databases on the server.

7. switch_database

Switch to a different database.

• Parameters: database

Usage Examples

Once configured, you can use these tools in Cursor IDE:

Connect to Database

Use the connect tool with:
- host: localhost
- user: myuser
- password: mypassword
- database: mydatabase

Execute a Query

Use the execute_query tool with:
- query: SELECT * FROM users LIMIT 10

Get Table Schema

Use the get_table_schema tool with:
- table_name: users

Development

Running the Server

# Production mode
npm start

# Development mode with auto-restart
npm run dev

Testing

You can test the server independently by running:

node src/server.js

Security Considerations

• Never commit your .env file to version control
• Use strong passwords for your MySQL database
• Consider using connection pooling for production use
• Implement proper access controls on your MySQL server

Troubleshooting

Common Issues

1. Connection Refused: Make sure your MySQL server is running and accessible
2. Authentication Failed: Verify your username and password in the .env file
3. Permission Denied: Ensure your MySQL user has the necessary permissions
4. MCP Not Working: Check that the path in mcp-config.json is correct

Debug Mode

To enable debug logging, set the environment variable:

DEBUG=mysql-mcp:*

Contributing

Feel free to submit issues and enhancement requests!

License

MIT License - see LICENSE file for details.