Build an MSIX installer for a desktop, console, or CLI app (Electron, .NET, C++, Rust, Flutter, Tauri) from build output or a .csproj with winapp package, optionally signed. Use for an installer testers can sideload, app distribution, or MSIX in scripts or CI. Not for signing an existing MSIX.
Install
npx skills add microsoft/winappCli --skill winapp-packagenpx skills add microsoft/winappCli --skill winapp-package -a claude-code -gnpx skills add microsoft/winappCli --skill winapp-package -a codex -ggemini skills install https://github.com/microsoft/winappCli.git --path plugins/winapp/skills/winapp-packagegh skill install microsoft/winappCli winapp-packagegit clone --depth 1 https://github.com/microsoft/winappCli /tmp/microsoft__winappCli
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__winappCli/plugins/winapp/skills/winapp-package ~/.claude/skills/winapp-package # Claude Code
cp -R /tmp/microsoft__winappCli/plugins/winapp/skills/winapp-package ~/.agents/skills/winapp-package # Codex, Cursor, Gemini CLI, Copilot, OpenCode