Microsoft just shipped an official C# SDK for the Model Context Protocol (MCP) — and it's the cleanest way to connect your .NET code to AI assistants like Claude. In this tutorial we build a production-ready MCP server in .NET from scratch and wire it up to Claude Desktop, step by step.

No fragile custom integrations. No rewriting glue code for every model. Just one MCP server that Claude, VS Code, Cursor, and other MCP clients can all talk to.

WHAT YOU'LL LEARN
- What MCP is and why it matters for .NET developers
- Scaffolding an MCP server with the official C# SDK
- Building real tools (not just "echo") with the [McpServerTool] attribute
- The #1 gotcha that breaks most MCP servers (stdout vs stderr)
- Connecting your server to Claude Desktop
- When to use stdio vs HTTP transport — an architect's take

Donations:
Gaza: https://www.savethechildren.org.uk/how-you-can-help/emergencies/gaza-crisis
Sudan: https://www.savethechildren.org.uk/how-you-can-help/emergencies/sudan-crisis

Support me on Patreon to access the source code:
https://www.patreon.com/mohamadlawand

My Courses:
https://dometrain.com/author/mohamad-lawand/

COMING NEXT
Part 2 — Deploying your MCP server to Azure Container Apps with Managed Identity. Subscribe so you don't miss it.

If this helped, leave a like and subscribe for more production-ready .NET + cloud content. Got a server you'd want to build? Tell me in the comments.

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WHO AM I:
I'm Mohamad, a Enterprise Architect working in Manchester, UK. I make videos about web, cloud, desktop and mobile development. 

GET IN TOUCH:
If you’d like to talk, I’d love to hear from you. Tweeting @moe23 directly will be the quickest way to get a response, but if your question is very long, feel free to email me at hello@mohamadlawand.com.

#dotnet #csharp #mcp #modelcontextprotocol #claude #dotnet10 #ai #softwarearchitecture

We Are .NET

A step-by-step walkthrough of building an MCP (Model Context Protocol) server in .NET using a console application. Covers installing the ModelContextProtocol and Microsoft.Extensions.Hosting NuGet packages, setting up stdio transport, registering tools via dependency injection, and defining MCP tools with descriptive attributes. The tutorial demonstrates testing with the MCP Inspector npm tool and then connecting the published .NET app to Claude Desktop by editing its config JSON, enabling Claude to query a mock customer/order repository through natural language.

.NET🔥🚀: Building MCP Server