https://github.com/rodrigopaml/mcp-sqlserver

A MCP Server implementation in C# for LLM integration with SQL Server tested with Claude Desktop
https://github.com/rodrigopaml/mcp-sqlserver

llm mcp-server sql-server

Last synced: 9 months ago
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A MCP Server implementation in C# for LLM integration with SQL Server tested with Claude Desktop

• Host: GitHub
• URL: https://github.com/rodrigopaml/mcp-sqlserver
• Owner: RodrigoPAml
• License: mit
• Created: 2025-04-08T00:51:26.000Z (10 months ago)
• Default Branch: main
• Last Pushed: 2025-04-10T23:30:55.000Z (10 months ago)
• Last Synced: 2025-04-14T17:14:06.943Z (9 months ago)
• Topics: llm, mcp-server, sql-server
• Language: C#
• Homepage:
• Size: 30.3 KB
• Stars: 1
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# MCP-SqlServer

A MCP Server (STDIO) implementation in C# for LLM integration with SQL Server tested with Claude Desktop

The server register logs into a **mcp_server.log** file

**Caution, the LLM can modify your database**

# Tools

List of tools provided to the LLM

* **HealthCheck**: Tests if the Microsoft SQL Server Database connection is good and alive.

* **GetSchema**: Get a list of all tables with their respective schema, columns and types.

* **Query**: Execute a query into the Microsoft SQL Server database and return the result as a JSON.

# Setup with Claude

1. Fill the _env.database_ with the connection string from your SQL Server

2. Compile the project

3. In the Claude Destkop Go _File->Configurations->Developer_ and edit the MCP configuration (_claude_desktop_config.json_)

4. Paste the json as: 

```json

{

    "mcpServers": {

        "database": {

            "command": "dotnet",

            "args": [

                "run",

                "--project",

                "C:\\Users\\{USER}\\Desktop\\MCP-SqlServer",

                "--no-build"

            ]

        }

    }

}

```

5. Restart Claude Desktop

   

# Testing

Open Claude Desktop and if everything is configured well you should be able to see this

![image](https://github.com/user-attachments/assets/005590e3-e419-41e4-a3ae-9fec08d6ad7a)

Click on the icon and you should be able to see the tools

![image](https://github.com/user-attachments/assets/af776f81-8e61-46c3-9d9a-24ef08f8d813)

## Asking for connection check

![image](https://github.com/user-attachments/assets/086c2054-a88a-404b-a00c-a26751e1e7e0)

## Asking for schema/table informations

![image](https://github.com/user-attachments/assets/817dd04c-d530-40fe-8261-fe574ee674b2)

## Asking for read query

![image](https://github.com/user-attachments/assets/727b56e9-cee3-44f5-a4b6-33019771c43a)

## Asking for modifications

![image](https://github.com/user-attachments/assets/1af29d63-547f-4ad2-8a37-2eaae039c99b)