---
title: "Discussion on \"Building a Powerful MCP Server in .NET with Just 20 Lines of Code\" | Hashnode"
description: "Discussion on \"Building a Powerful MCP Server in .NET with Just 20 Lines of Code\". Learn how to build a fully functional MCP server using .NET in just 20 lines of code, leveraging modern features for simplicity and power"
url: "https://hashnode.com/posts/building-a-powerful-mcp-server-in-net-with-just-20-lines-of-code/6894284300f09af9183e72c4"
---

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# [Building a Powerful MCP Server in .NET with Just 20 Lines of Code](https://xakpc.info/building-a-powerful-mcp-server-in-net-with-just-20-lines-of-code?utm_source=hashnode&utm_medium=feed)

Learn how to build a fully functional MCP server using .NET in just 20 lines of code, leveraging modern features for simplicity and power

Aug 7, 2025 · 6 min read · xakpc.info  
Updated Aug 19, 2025  
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-   [#mcp](https://hashnode.com/tag/mcp)
-   [#mcp-server](https://hashnode.com/tag/mcp-server)
-   [#csharp](https://hashnode.com/tag/csharp)
-   [#dotnet](https://hashnode.com/tag/dotnet)

## Written by

[Pavel Osadchuk](https://hashnode.com/@xakpc)

@xakpc · Expanding Circle

  
[View profile](https://hashnode.com/@xakpc)

Lead .NET Dev 👨‍💻 | Ex-CEO of HR Startup 🤖 | winner of dozen hackathons 🏆

I'm a .NET Developer working on MS Stack for more than 12 years already. I worked with most dotnet-based technologies, from WinForms to Azure Functions. In my time, I won a dozen hackathons, launched a couple of startups, failed them, and am now working as a lead .NET developer in an enterprise company.

## Responses 1

Markdown supported · ⌘↵ to post

[Alexey Lopatin](https://hashnode.com/@alexnmd)

[Jul 9](https://hashnode.com/posts/building-a-powerful-mcp-server-in-net-with-just-20-lines-of-code/6894284300f09af9183e72c4/comment/6a4f77bc1ddf9241d81b9190)

What about an authorization? It is possible separate access to mcp tools based claims, roles etc?