SingleStore MCP Server

A Model Context Protocol (MCP) server for interacting with SingleStore databases. This server provides tools for querying tables, describing schemas, and generating ER diagrams.

Features

• List all tables in the database
• Execute custom SQL queries
• Get detailed table information including schema and sample data
• Generate Mermaid ER diagrams of database schema
• SSL support with automatic CA bundle fetching
• Proper error handling and TypeScript type safety

Prerequisites

• Node.js 16 or higher
• npm or yarn
• Access to a SingleStore database
• SingleStore CA bundle (automatically fetched from portal)

Installation

Installing via Smithery

To install SingleStore MCP Server for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @madhukarkumar/singlestore-mcp-server --client claude

1. Clone the repository:

git clone <repository-url>
cd mcp-server-singlestore

2. Install dependencies:

npm install

3. Build the server:

npm run build

Configuration

The server requires the following environment variables:

SINGLESTORE_HOST=your-host.singlestore.com
SINGLESTORE_PORT=3306
SINGLESTORE_USER=your-username
SINGLESTORE_PASSWORD=your-password
SINGLESTORE_DATABASE=your-database

Configuration Methods

1. Environment Variables: Set the variables in your shell:

   export SINGLESTORE_HOST=your-host.singlestore.com
   export SINGLESTORE_PORT=3306
   export SINGLESTORE_USER=your-username
   export SINGLESTORE_PASSWORD=your-password
   export SINGLESTORE_DATABASE=your-database
   

2. MCP Settings Configuration: Add to your MCP settings file (e.g., cline_mcp_settings.json or claude_desktop_config.json):

   {
     "mcpServers": {
       "singlestore": {
         "command": "node",
         "args": ["path/to/mcp-server-singlestore/build/index.js"],
         "env": {
           "SINGLESTORE_HOST": "your-host.singlestore.com",
           "SINGLESTORE_PORT": "3306",
           "SINGLESTORE_USER": "your-username",
           "SINGLESTORE_PASSWORD": "your-password",
           "SINGLESTORE_DATABASE": "your-database"
         }
       }
     }
   }
   

Usage

Available Tools

1. list_tables

   • Lists all tables in the database
   • No parameters required

   use_mcp_tool({
     server_name: "singlestore",
     tool_name: "list_tables",
     arguments: {}
   })
   

2. query_table

   • Executes a custom SQL query
   • Parameters:
     • query: SQL query string

   use_mcp_tool({
     server_name: "singlestore",
     tool_name: "query_table",
     arguments: {
       query: "SELECT * FROM your_table LIMIT 5"
     }
   })
   

3. describe_table

   • Gets detailed information about a table
   • Parameters:
     • table: Table name

   use_mcp_tool({
     server_name: "singlestore",
     tool_name: "describe_table",
     arguments: {
       table: "your_table"
     }
   })
   

4. generate_er_diagram

   • Generates a Mermaid ER diagram of the database schema
   • No parameters required

   use_mcp_tool({
     server_name: "singlestore",
     tool_name: "generate_er_diagram",
     arguments: {}
   })
   

5. run_read_query

   • Executes a read-only (SELECT) query on the database
   • Parameters:
     • query: SQL SELECT query to execute

   use_mcp_tool({
     server_name: "singlestore",
     tool_name: "run_read_query",
     arguments: {
       query: "SELECT * FROM your_table LIMIT 5"
     }
   })
   

Running Standalone

1. Build the server:

npm run build

2. Run the server:

node build/index.js

Installing in Claude Desktop App

1. Add the server configuration to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "singlestore": {
      "command": "node",
      "args": ["path/to/mcp-server-singlestore/build/index.js"],
      "env": {
        "SINGLESTORE_HOST": "your-host.singlestore.com",
        "SINGLESTORE_PORT": "your-port",
        "SINGLESTORE_USER": "your-username",
        "SINGLESTORE_PASSWORD": "your-password",
        "SINGLESTORE_DATABASE": "your-database"
      }
    }
  }
}

2. Restart the Claude Desktop App

Security Considerations

1. Never commit credentials to version control
2. Use environment variables or secure configuration management
3. Consider using a connection pooling mechanism for production use
4. Implement appropriate access controls and user permissions in SingleStore
5. Keep the SingleStore CA bundle up to date

Development

Project Structure

mcp-server-singlestore/
├── src/
│   └── index.ts      # Main server implementation
├── package.json
├── tsconfig.json
├── README.md
└── CHANGELOG.md

Building

npm run build

Testing

npm test

Troubleshooting

1. Connection Issues

   • Verify credentials and host information
   • Check SSL configuration
   • Ensure database is accessible from your network

2. Build Issues

   • Clear node_modules and reinstall dependencies
   • Verify TypeScript configuration
   • Check Node.js version compatibility

Contributing

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request

License

MIT License - see LICENSE file for details