SQL Server Express MCP Server

@hanweg

Repository

Basic information

About SQL Server Express MCP Server

MCP server for interacting with SQLExpress

#mcp-sqlexpress#sql-server #database-interaction

SQL Server Express MCP Server config

No standard config provided

This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.

Repository

SQL Server Express MCP Server tools

Get list of databases that are allowed to be accessed

Execute SELECT queries

Execute INSERT/UPDATE/DELETE queries

Create new tables

List all tables in database

Show table schema

Overview

What is SQL Server Express MCP Server?

An MCP server for interacting with Microsoft SQL Server Express. It supports both Windows and SQL Server authentication and is intended for use with AI assistants like Claude Desktop.

How to use SQL Server Express MCP Server?

Clone the repository, create and activate a Python virtual environment using uv, install dependencies, then configure claude_desktop_config.json with the appropriate --server, --auth, and optional --username/--password flags. For Windows authentication use --auth windows --trusted-connection yes; for SQL authentication use --auth sql and supply credentials.

Key features of SQL Server Express MCP Server

Execute SELECT, INSERT, UPDATE, DELETE queries
Create new tables
List and describe tables
Restrict access to allowed databases
Supports Windows and SQL Server authentication

Use cases of SQL Server Express MCP Server

Querying SQL Server databases through an AI assistant
Managing table schemas without direct database tools
Securely integrating SQL Server with MCP-compatible applications

Frequently asked questions

What authentication methods are supported?

The server supports Windows Authentication (`--auth windows`) and SQL Server Authentication (`--auth sql`). SQL authentication requires a username and password.

What are the prerequisites?

Python 3.10 or higher, Microsoft ODBC Driver 18 for SQL Server, and a SQL Server instance with appropriate permissions.

How do I restrict which databases can be accessed?

Use the `--allowed-databases` flag and provide a comma-separated list of database names (e.g., `database1,database2`).

Can I run custom queries other than SELECT?

Yes. The `write_query` tool executes INSERT, UPDATE, and DELETE queries, and the `create_table` tool creates new tables.

Does the server support certificate trust?

Yes, use the `--trust-server-certificate yes` flag to trust the server certificate without validation.

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