MySQL MCP Server
Provides tools for querying, exploring schemas, executing SQL with permission controls, listing tables, describing structures, and browsing databases in a MySQL database.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@MySQL MCP Server list all tables in the database"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
MySQL MCP Server
A Model Context Protocol (MCP) server for MySQL databases, built with NestJS and MCP-Nest. Enables AI assistants like Claude and Cursor to interact with MySQL databases through a standardized protocol.
Overview
MySQL MCP Server exposes MySQL database operations as MCP tools, allowing AI assistants to:
Query and explore database schemas
Execute SQL queries with permission controls
List tables, describe table structures, and browse databases
Run in multiple transport modes (stdio, HTTP SSE, Streamable HTTP)
Related MCP server: MCP MySQL Server
Features
Description | |
Connection Pool | Efficient MySQL connection management with configurable pool size |
Permission Control | Granular SQL operation permissions (SELECT, INSERT, UPDATE, DELETE, DDL) |
DRY_RUN Mode | Validate SQL queries without returning actual data |
MCP Tools | Standardized database operations exposed via Model Context Protocol |
Graceful Shutdown | Clean resource cleanup on process termination |
File Logging | Configurable log output with rotation support |
Prerequisites
Node.js 18+
MySQL 5.7+ database
npm or pnpm package manager
Installation
# Global installation (recommended)
npm install -g @johnson.lee/mysql-mcp-server
# Or use npx
npx @johnson.lee/mysql-mcp-serverQuick Start
# Set environment variables
export DB_HOST=localhost
export DB_PORT=3306
export DB_USER=root
export DB_PASSWORD=your_password
export DB_NAME=your_database
# Run the server
mysql-mcpConfiguration
Configure via environment variables:
Database Connection
Variable | Default | Description |
| localhost | MySQL host |
| 3306 | MySQL port |
| root | MySQL user |
| - | MySQL password |
| test_db | Database name |
| 2 | Min pool connections |
| 10 | Max pool connections |
Permission Control
Variable | Default | Description |
| true | Allow SELECT queries |
| true | Allow SHOW / DESCRIBE |
| false | Allow INSERT |
| false | Allow UPDATE |
| false | Allow DELETE |
| false | Allow CREATE/ALTER/DROP/TRUNCATE |
Server Options
Variable | Default | Description |
| mysql-mcp-server | Server name — used as log file prefix |
| stdio | Transport: stdio/http-sse/streamable-http |
| info | Log level: debug/info/warn/error |
| ./logs | Log directory |
| false | Validate SQL without returning data |
Editor Integration
Claude Desktop
Edit ~/.config/claude/claude_desktop_config.json:
{
"mcpServers": {
"mysql": {
"command": "npx",
"args": ["@johnson.lee/mysql-mcp-server"],
"env": {
"DB_HOST": "localhost",
"DB_USER": "root",
"DB_PASSWORD": "your_password",
"DB_NAME": "your_database"
}
}
}
}Cursor
Create .cursor/mcp.json:
{
"mcpServers": {
"mysql": {
"command": "npx",
"args": ["@johnson.lee/mysql-mcp-server"],
"env": {
"DB_HOST": "localhost",
"DB_USER": "root",
"DB_PASSWORD": "your_password",
"DB_NAME": "your_database"
}
}
}
}Multi-Environment Setup
You can register multiple instances to connect different databases simultaneously.
Each instance should have a unique MCP_SERVER_NAME, which is also used as the log file prefix — e.g. dev-info.log, prod-error.log.
Note: All
envvalues must be strings. Use"true"/"false", not bare booleans.
{
"mcpServers": {
"dev-mysql": {
"command": "npx",
"args": ["@johnson.lee/mysql-mcp-server"],
"env": {
"MCP_SERVER_NAME": "dev",
"DB_HOST": "dev-db.example.com",
"DB_PORT": "3306",
"DB_USER": "dev_user",
"DB_PASSWORD": "dev_password",
"DB_NAME": "dev_db",
"LOG_DIR": "/tmp/mcp-logs"
}
},
"prod-mysql": {
"command": "npx",
"args": ["@johnson.lee/mysql-mcp-server"],
"env": {
"MCP_SERVER_NAME": "prod",
"DB_HOST": "prod-db.example.com",
"DB_PORT": "3306",
"DB_USER": "prod_user",
"DB_PASSWORD": "prod_password",
"DB_NAME": "prod_db",
"LOG_DIR": "/tmp/mcp-logs",
"DRY_RUN": "true"
}
}
}
}With the above config, log files are written to LOG_DIR with the server name as prefix:
/tmp/mcp-logs/
├── dev-info.log
├── dev-error.log
├── prod-info.log
└── prod-error.logAvailable Tools
list_tables
List all tables in the current database.
describe_table
Get table structure (columns, types, keys, etc.).
{
"name": "describe_table",
"arguments": { "tableName": "users" }
}execute_query
Execute SQL queries.
{
"name": "execute_query",
"arguments": { "sql": "SELECT * FROM users LIMIT 10" }
}list_databases
List all available databases on the MySQL server.
Available Tools
4 toolsdescribe_tableB
Get the structure of a specific table
Inputs: tableName (required).
execute_queryB
Execute a SELECT query on the database
Inputs: sql (required), timeout.
list_databasesA
List all available databases
Inputs: no named parameters.
list_tablesA
List all tables in the current database
Inputs: no named parameters.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
Loading tool schema changelog…
TDQS
Scored across 4 tools
Each tool targets a distinct resource or action: table structure, SELECT query execution, database listing, and table listing. There is no overlap in functionality.
All tool names consistently follow the verb_noun pattern (list_databases, list_tables, describe_table, execute_query), making them easy to parse and select.
With 4 tools, the set is minimal but focused. It covers basic database exploration needs, though one might expect additional tools for write operations or schema browsing.
The set handles core read operations (listing, describing, querying) but lacks any write capabilities (INSERT, UPDATE, DELETE) and does not support non-SELECT queries, leaving notable gaps for a general MySQL server.
Maintenance
Related MCP Connectors
A comprehensive Model Context Protocol (MCP) server that enables AI assistants to interact with yo…
Hosted MySQL MCP server for Claude, ChatGPT and Cursor, with each action switched per account.
Text-to-SQL MCP server: read-only queries on PostgreSQL, MySQL and SQL Server with your real schema
Hosted SQL Server MCP server for Claude, ChatGPT and Cursor, with each action switched per account.
Related MCP Servers
- AlicenseNot gradedqualityDmaintenanceA server that enables AI models to interact with MySQL databases through a Model Control Protocol, providing tools for table creation, schema inspection, query execution, and data retrieval.28MIT
- AlicenseBqualityDmaintenanceA Model Context Protocol server that enables AI models to interact with MySQL databases, providing tools for querying, executing statements, listing tables, and describing table structures.5290 npmMIT
- AlicenseBqualityDmaintenanceA Model Context Protocol server that enables AI models to interact with MySQL databases through a standardized interface, providing tools for querying, executing commands, and managing database schemas.7MIT
- FlicenseNot gradedqualityDmaintenanceA Model Context Protocol server that enables AI models to interact with MySQL databases through natural language, supporting SQL queries, table creation, and schema exploration.3-