mcp-mysql-explorer 0.1.0

MCP server for querying MySQL databases — let AI agents explore schemas, run queries, and manage data via Model Context Protocol.

MCP MySQL Server

A Model Context Protocol (MCP) server that connects AI agents (Cursor, Claude Desktop, etc.) to MySQL databases — enabling schema exploration, data querying, and SQL execution through natural language.

Features

Tool	Description
list_tables	List all tables in the database
describe_table	View table schema with column types and comments
query	Execute read-only queries (SELECT / SHOW / DESCRIBE / EXPLAIN)
execute_sql	Execute write operations (INSERT / UPDATE / DELETE / DDL)
get_table_indexes	Show all indexes of a table
get_create_table	Get the CREATE TABLE statement
get_database_info	Get database overview (version, size, table count)

Installation

pip install mcp-mysql-server

Usage in Cursor

Open Cursor Settings → MCP, add a new server. Three ways to configure the database connection:

Option 1: Command-line arguments (recommended)

{
  "mcpServers": {
    "mysql": {
      "command": "mcp-mysql-server",
      "args": [
        "--host", "your-mysql-host",
        "--port", "3306",
        "--user", "your-user",
        "--password", "your-password",
        "--database", "your-database"
      ]
    }
  }
}

Option 2: Environment variables

{
  "mcpServers": {
    "mysql": {
      "command": "mcp-mysql-server",
      "env": {
        "MYSQL_HOST": "your-mysql-host",
        "MYSQL_PORT": "3306",
        "MYSQL_USER": "your-user",
        "MYSQL_PASSWORD": "your-password",
        "MYSQL_DATABASE": "your-database"
      }
    }
  }
}

Option 3: .env file

Create a .env file in the working directory:

MYSQL_HOST=your-mysql-host
MYSQL_PORT=3306
MYSQL_USER=your-user
MYSQL_PASSWORD=your-password
MYSQL_DATABASE=your-database

Then simply:

{
  "mcpServers": {
    "mysql": {
      "command": "mcp-mysql-server"
    }
  }
}

Priority: command-line args > environment variables > .env file

Usage in Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "mysql": {
      "command": "mcp-mysql-server",
      "args": [
        "--host", "your-mysql-host",
        "--user", "your-user",
        "--password", "your-password",
        "--database", "your-database"
      ]
    }
  }
}

Run Manually

# With command-line arguments
mcp-mysql-server --host localhost --user root --password secret --database mydb

# With .env file
mcp-mysql-server

# As a Python module
python -m mcp_mysql_server --host localhost --database mydb

Security Notes

• The query tool only allows SELECT / SHOW / DESCRIBE / EXPLAIN statements.
• The execute_sql tool can run write operations — use with caution.
• Query results are capped at 1000 rows by default.
• Table/column identifiers are backtick-wrapped to prevent SQL injection.

License

MIT