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New AI Agents can now Build Native Windows Apps using WinUI and Windows App SDK

New AI Agents can now Build Native Windows Apps using WinUI and Windows App SDK

Written By Anoop C Nair
Last Updated May 18, 2026
Posted In Windows 365
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Key Takeaways

  • AI agents can now help build native Windows apps using WinUI and Windows App SDK.
  • Works with AI coding tools like GitHub Copilot and Claude Code.
  • Supports the complete app development process from build to testing.
  • Designed to reduce common coding errors and AI loop issues.
  • Developers can create WinUI 3 apps faster with simple setup commands.

Microsoft has introduced new AI agent skills that help developers quickly build native Windows apps using WinUI and the Windows App SDK. These skills work with tools like GitHub Copilot and Claude Code to handle the complete app development process, including creating, building, running, testing, and improving apps. The system is optimised to avoid common coding issues and reduce unnecessary AI loops, making app development faster and more efficient. Developers can easily set up the WinUI plugin in GitHub Copilot CLI and start building WinUI 3 apps in just a few minutes.

Table of Content

New AI Agents can now Build Native Windows Apps using WinUI and Windows App SDK

Developers can now quickly set up AI-powered WinUI app development using GitHub Copilot CLI. By installing the WinUI plugin and running the WinUI setup command, all required tools and prerequisites are automatically configured. Once the setup is complete, you can simply ask GitHub Copilot to generate and help build your WinUI 3 application, making native Windows app development faster and easier.

Add the WinUI plugin to GitHub Copilot CLI

/plugin install winui@awesome-copilot

Patch My PC

Run the winui-setup skill to install all prerequisites

/winui:winui-setup

AI Skills to Simplify Native WinUI App Development

Microsoft introduced new WinUI development skills for AI agents like GitHub Copilot to make native Windows app development easier and faster. Normally, building WinUI apps requires knowledge of XAML, MVVM, packaging, accessibility, UI testing, and many other components. AI tools often struggle with these complex steps, mix old technologies with modern WinUI, or fail during app testing and execution.

  • To solve this, Microsoft created a dedicated WinUI agent plugin with built-in skills and tools that guide AI agents through the complete app development process.
  • The AI can create the project, build and run the app, test functionality, fix coding errors automatically, apply accessibility and design best practices, and even help with packaging and deployment.
  • Developers can also use additional skills for UI testing, code reviews, app packaging, and migrating older WPF apps to WinUI.
  • The plugin includes one main WinUI development agent and eight specialised skills that work together to simplify Windows app development while using fewer AI tokens and improving efficiency.
New AI Agents can now Build Native Windows Apps using WinUI and Windows App SDK - Fig.1 - Creds to MS
New AI Agents can now Build Native Windows Apps using WinUI and Windows App SDK – Fig.1 – Creds to MS

Different WinUI Development Tasks

The WinUI agent includes multiple built-in skills, and each skill is designed for a specific task. By default, the agent automatically loads the main development and design skills needed to create a WinUI 3 app from start to finish. The table below helps you to show more details.

SkillWhat it does
winui-dev-workflowBuild and run workflow – project creation from templates, the BuildAndRun.ps1 helper, winapp run, error diagnosis, prerequisites. Use when building, running, or fixing build errors.
winui-designUI design and XAML correctness – layout planning, control selection, Fluent Design, theming (Light/Dark/HighContrast), typography, spacing, brushes, accessibility, data-binding review. Use when designing new pages, converting from WPF/Electron/web, reviewing XAML, or fixing theme issues.
winui-code-reviewCode-quality review before committing – MVVM compliance, x:Bind correctness, accessibility, theming, security, performance. Catches the issues the compiler and UI tests won’t.
winui-ui-testingAutomated UI testing – generates a batch test script, runs all tests in one pass, reads results. Covers element assertions, interactions, value checks (TextBox, ComboBox, ToggleSwitch), file pickers, flyouts, dialogs, persistence, and accessibility audits.
winui-packagingMSIX packaging, code signing, and distribution – release builds, certificate generation (winapp cert generate), trust, signing (winapp sign), self-contained deployment, GitHub Actions CI/CD, and Microsoft Store submission.
winui-wpf-migrationWPF → WinUI 3 migration – namespace replacement, control mapping (DataGrid → ListView, WrapPanel → ItemsRepeater, TabControl → TabView), Dispatcher → DispatcherQueue, System.Drawing → BitmapImage, MVVM conversion to CommunityToolkit.Mvvm, and DynamicResource → ThemeResource.
winui-session-reportDiagnostic report on the current or a recent Copilot session. Use when asking for session feedback, debugging agent behavior, or reviewing what happened during a build session.
winui-setupSetup your development environment – only call once if needed to ensure all the tools are installed and available.
New AI Agents can now Build Native Windows Apps using WinUI and Windows App SDK – Table 1

Need Further Assistance or Have Technical Questions?

Join the LinkedIn Page and Telegram group to get the latest step-by-step guides and news updates. Join our Meetup Page to participate in User group meetings. Also, join the WhatsApp Community  and the Whatsapp channel to get the latest news on Microsoft Technologies. We are there on Reddit as well

Resources

Introducing WinUI agent plugin for GitHub Copilot and Claude Code – #ifdef Windows

Author

Anoop C Nair has been Microsoft MVP for 10 consecutive years from 2015 onwards. He is a Workplace Solution Architect with more than 22+ years of experience in Workplace technologies. He is a Blogger, Speaker, and Local User Group Community leader. His primary focus is on Device Management technologies like SCCM and Intune. He writes about technologies like Intune, SCCM,  Windows, Cloud PC, Windows, Entra, Microsoft Security, Career, etc.

Written by

Anoop C Nair is Workplace Technology solution architect with 25+ years of experience in global enterprise organizations such as JP Morgan, Capgemini, etc. Microsoft Certified Trainer. Microsoft MVP from 2015 onwards for consecutive 11+ years! He also conducts Intune and modern workplace tech training for enterprise organizations. He is Blogger, Speaker, and Founder of HTMD Community and HTMD Conference. His main focus is on Device Management technologies like Intune, Windows, Cloud PC. He writes about technologies like Intune, SCCM, Windows, Cloud PC, Windows, Entra, Microsoft Security.

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