MySQL Database MCP server for AI agents

The MySQL Database MCP Server provides a bridge for Claude AI to interact with MySQL databases. It enables you to connect to databases and execute SQL queries directly through Claude, making database operations more accessible through natural language.

Installation

You can install the package using uv:

uv pip install mysqldb-mcp-server

Or using pip:

pip install mysqldb-mcp-server

Configuration

The server uses the following environment variables:

MYSQL_HOST: MySQL server address (default: "localhost")
MYSQL_USER: MySQL username (default: "root")
MYSQL_PASSWORD: MySQL password (default: "")
MYSQL_DATABASE: Initial database (optional)
MYSQL_READONLY: Read-only mode (set to 1/true to enable, default: false)

Setting Up in Claude Desktop

MacOS Configuration

For MacOS, edit the Claude Desktop configuration file:

~/Library/Application\ Support/Claude/claude_desktop_config.json

Windows Configuration

For Windows, edit the configuration file at:

%APPDATA%/Claude/claude_desktop_config.json

Configuration Example

Add the following to your configuration file:

{
  "mcpServers": {
    "mysqldb-mcp-server": {
      "command": "uvx",
      "args": [
        "mysqldb-mcp-server"
      ],
      "env": {
        "MYSQL_HOST": "localhost",
        "MYSQL_USER": "root",
        "MYSQL_PASSWORD": "password",
        "MYSQL_DATABASE": "[optional]",
        "MYSQL_READONLY": "true"
      }
    }
  }
}

Quick Installation via Smithery

For automatic installation with Claude Desktop:

npx -y @smithery/cli install @burakdirin/mysqldb-mcp-server --client claude

Using the MCP Server

The server provides two main tools:

Connecting to a Database

Use the connect_database tool to establish a connection:

Parameter: database (string) - Name of the database to connect to
Returns: Confirmation message when connection is successful

Example usage in Claude:

I need to connect to the "employees" database.

Executing SQL Queries

Use the execute_query tool to run SQL commands:

Parameter: query (string) - SQL query or queries to execute
Returns: Query results in JSON format
Multiple queries can be sent separated by semicolons

Example usage in Claude:

Please execute this query: SELECT * FROM employees LIMIT 5;

Or for multiple queries:

Run these queries:
1. SELECT COUNT(*) FROM employees;
2. SELECT department_name, COUNT(*) FROM departments GROUP BY department_name;

The MCP server will execute these queries and return the results in a structured JSON format that Claude can interpret and explain to you.

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "mysqldb-mcp-server" '{"command":"uvx","args":["mysqldb-mcp-server"],"env":{"MYSQL_HOST":"localhost","MYSQL_USER":"root","MYSQL_PASSWORD":"password","MYSQL_DATABASE":"[optional]","MYSQL_READONLY":"true"}}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "mysqldb-mcp-server": {
            "command": "uvx",
            "args": [
                "mysqldb-mcp-server"
            ],
            "env": {
                "MYSQL_HOST": "localhost",
                "MYSQL_USER": "root",
                "MYSQL_PASSWORD": "password",
                "MYSQL_DATABASE": "[optional]",
                "MYSQL_READONLY": "true"
            }
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%\Claude\claude_desktop_config.json
Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "mysqldb-mcp-server": {
            "command": "uvx",
            "args": [
                "mysqldb-mcp-server"
            ],
            "env": {
                "MYSQL_HOST": "localhost",
                "MYSQL_USER": "root",
                "MYSQL_PASSWORD": "password",
                "MYSQL_DATABASE": "[optional]",
                "MYSQL_READONLY": "true"
            }
        }
    }
}

3. Restart Claude Desktop for the changes to take effect