OpenAI · Agent Skill

winui-app

Bootstrap, develop, and design modern WinUI 3 desktop applications with C# and the Windows App SDK using official Microsoft guidance, WinUI Gallery patterns, Windows App SDK samples, and CommunityToolkit components. Use when creating a brand new app, preparing a machine for WinUI, reviewing,…

Published by OpenAI94 lines in SKILL.md

Source: openai/skills/skills/.curated/winui-app
Repository owner: openai

Install

Read the SKILL.md and any scripts before installing: a skill runs with your agent's permissions. This copies just this skill into Claude Code's user skills folder; other agents read skills from their own folder.

Claude Code (user-level)

git clone --depth 1 --filter=blob:none --sparse https://github.com/openai/skills.git /tmp/skills
cd /tmp/skills && git sparse-checkout set "skills/.curated/winui-app"
mkdir -p ~/.claude/skills && cp -r "skills/.curated/winui-app" ~/.claude/skills/winui-app

Skills folder docs:

Claude Code Codex Gemini CLI OpenCode Cursor GitHub Copilot goose OpenHands Amp Factory Droid Junie Kiro Roo Code Mistral Vibe pi Hermes Agent OpenClaw Letta

Works with

Agent Skills is an open format, so this skill loads in any harness that supports it, including Claude Code, Codex, Gemini CLI, OpenCode, Cursor, GitHub Copilot, goose, OpenHands. Some skills are written for one product and say so in their description.

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Reviewed Oct 5, 2026. Name and description are the skill's own frontmatter.