MSSQL MCP Server

A Model Context Protocol (MCP) server for connecting to Microsoft SQL Server databases. This server provides tools for executing SQL queries and managing database connections.

Installation

Installing via Smithery

To install MSSQL Database Connector for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @knight0zh/mssql-mcp-server --client claude

Manual Installation

npm install mssql-mcp-server

Usage

Add the server to your MCP settings configuration file:

{
  "mcpServers": {
    "mssql": {
      "command": "mssql-mcp-server",
      "env": {
        "MSSQL_CONNECTION_STRING": "Server=localhost;Database=master;User Id=sa;Password=yourpassword;",
        // Or individual connection parameters:
        "MSSQL_HOST": "localhost",
        "MSSQL_PORT": "1433",
        "MSSQL_DATABASE": "master",
        "MSSQL_USER": "sa",
        "MSSQL_PASSWORD": "yourpassword",
        "MSSQL_ENCRYPT": "false",
        "MSSQL_TRUST_SERVER_CERTIFICATE": "true"
      }
    }
  }
}

Tools

query

Execute a SQL query on a MSSQL database.

Parameters

connectionString (string, optional): Full connection string (alternative to individual parameters)
host (string, optional): Database server hostname
port (number, optional): Database server port (default: 1433)
database (string, optional): Database name (default: master)
username (string, optional): Database username
password (string, optional): Database password
query (string, required): SQL query to execute
encrypt (boolean, optional): Enable encryption (default: false)
trustServerCertificate (boolean, optional): Trust server certificate (default: true)

Either connectionString OR (host + username + password) must be provided.

Example

const result = await use_mcp_tool({
  server_name: 'mssql',
  tool_name: 'query',
  arguments: {
    host: 'localhost',
    username: 'sa',
    password: 'yourpassword',
    query: 'SELECT * FROM Users',
  },
});

Development

# Install dependencies
npm install

# Run in development mode
npm run dev

# Build
npm run build

# Run tests
npm test

# Run linter
npm run lint

# Format code
npm run format

License

MIT

This server cannot be installed

security - not tested

license - permissive license

quality - not tested

hybrid server

The server is able to function both locally and remotely, depending on the configuration or use case.

A Model Context Protocol server that enables executing SQL queries and managing connections with Microsoft SQL Server databases.

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Installation

Installing via Smithery

Manual Installation

Usage

Tools

query

Parameters

Example

Development

License

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