TiDB MCP Server

A Model Context Protocol (MCP) server for TiDB that allows executing SELECT queries through MCP tools.

Features

Execute SELECT queries on TiDB
Secure connection via environment variables
Lightweight and easy to use

Prerequisites

Node.js 16+
TiDB instance

Installation

Via npx

npx tidb-mcp-server

Global installation

npm install -g tidb-mcp-server
tidb-mcp-server

Configuration

Set these environment variables before running:

export TIDB_HOST="your_tidb_host"
export TIDB_PORT="your_tidb_port" 
export TIDB_USER="your_username"
export TIDB_PASS="your_password"
export TIDB_DB="your_database"

# Optional operation permissions (default: false)
export ALLOW_INSERT_OPERATION="false"  # Set to "true" to allow INSERT operations
export ALLOW_UPDATE_OPERATION="false"  # Set to "true" to allow UPDATE operations 
export ALLOW_DELETE_OPERATION="false"  # Set to "true" to allow DELETE operations

WARNING: Enabling these operations may expose your database to modification risks.
Only enable what you need and ensure proper access controls are in place.

Usage

Start the server:

tidb-server

Add to MCP configuration (cline_mcp_settings.json):

{
  "mcpServers": {
    "tidb-server": {
      "command": "npx",
      "args": ["-y", "tidb-mcp-server"], # Also adding the -y flag for consistency
      "env": {
        "TIDB_HOST": "your_tidb_host",
        "TIDB_PORT": "your_tidb_port",
        "TIDB_USER": "your_username",
        "TIDB_PASS": "your_password",
        "TIDB_DB": "your_database"
      }
    }
  }
}

Use the MCP tool:

const result = await use_mcp_tool({
  server_name: 'tidb-server',
  tool_name: 'tidb_query', 
  arguments: {
    sql: 'SELECT * FROM your_table LIMIT 10'
  }
});

Development

Clone the repo:

git clone https://github.com/l1806858547/tidb-server.git
cd tidb-server

Install dependencies:

npm install

Build:

npm run build

Run:

node build/index.js

License

MIT