MCP Mysql Connector

mcp-mysql-connector

MCP server exposing MySQL database functionalities as tools for LLM agents.

mcp-name: io.github.daedalus/mcp-mysql-connector

Overview

mcp-mysql-connector is a Model Context Protocol (MCP) server that provides MySQL database operations as tools for LLM agents. It allows AI assistants to interact with MySQL databases through a standardized protocol, enabling:

• Database and table management
• Query execution
• User authentication and privilege management
• Schema introspection
• Transaction control

Install

pip install mcp-mysql-connector

Quick Start

Running the Server

# Run with stdio transport (default)

mcp-mysql-connector

Or run programmatically

python -c "from mcp_mysql import mcp; mcp.run()"

Configuration

Connect to MySQL using the connect tool:

{

"host": "localhost", "port": 3306, "user": "root", "password": "your_password", "database": "your_database" }

MCP Tools

Connection Management

Query Execution

Database Operations

Table Operations

Column & Index Operations

User Management

Server Information

MCP Resources

The server provides dynamic resources for database and table metadata:

• database://{name} - Database metadata including table list
• table://{db}/{table} - Table metadata including schema, columns, and indexes

Usage Examples

Connect and Query

# First, connect to database

connect(host="localhost", user="root", password="secret", database="mydb")

Execute a query

execute_query(sql="SELECT * FROM users WHERE active = true")

List all tables

list_tables(database="mydb")

Create Database and Table

# Create a database

create_database(name="newapp")

Create a table

create_table(name="users", schema="id INT PRIMARY KEY AUTO_INCREMENT, name VARCHAR(255), email VARCHAR(255) UNIQUE")

User Management

# Create a new user with password

create_user(username="app_user", host="localhost", password="secure_password")

Grant privileges

grant_privileges(privileges="SELECT,INSERT,UPDATE,DELETE", on="newapp.*", username="app_user", host="localhost")

Transaction Control

# Start transaction

execute_query(sql="BEGIN")

Execute operations

execute_query(sql="INSERT INTO accounts (balance) VALUES (100)")

Commit or rollback

commit() # or rollback()

Environment Variables

The server supports configuration via environment variables:

export MYSQL_HOST=localhost

export MYSQL_PORT=3306 export MYSQL_USER=root export MYSQL_PASSWORD=secret export MYSQL_DATABASE=mydb

Development

# Clone repository

git clone https://github.com/daedalus/mcp-mysql-connector.git cd mcp-mysql-connector

Create virtual environment

python -m venv venv source venv/bin/activate

Install dependencies

pip install -e ".[test]"

Run tests

pytest

Format code

ruff format src/ tests/

Lint

ruff check src/ tests/

Type check

mypy src/

Architecture

mcp-mysql-connector/

├── src/mcp_mysql/ │ ├── core/models.py # Data models (QueryResult, TableSchema, etc.) │ ├── adapters/mysql.py # MySQL connection & pooling │ ├── services/connection.py # Connection manager │ ├── tools/mysql_tools.py # MCP tool implementations │ └── mcp.py # FastMCP server setup └── tests/ # Test suite

Requirements

• Python 3.11+
• fastmcp >= 2.0.0
• pymysql >= 1.1.0
• sqlparse >= 0.4.0

License

MIT License - see LICENSE for details.