UI Design skills

Newest skills

231 skills

ui-widget-developer

Build MCP servers for Copilot Chat using the OpenAI Apps SDK or MCP Apps SDK widget rendering support (any language). Use this skill when: - Creating MCP servers that integrate with M365 Copilot declarative agents - Building rich interactive widgets (React + Fluent UI) that render in Copilot Chat - Implementing tools that return structuredContent for widget rendering - Adapting an existing MCP server to support Copilot widget rendering - Setting up devtunnels for localhost MCP server exposure - Configuring mcpPlugin.json manifests with RemoteMCPServer runtime Do NOT use this skill for general

UI Design

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setup-sso-ui-widget

Adds Microsoft Entra SSO (single sign-on, no OBO) to a Microsoft 365 Copilot declarative agent whose tools are served by an MCP server — for BOTH widget standards: (1) the MCP Apps standard (from create-mcp-app / the MCP Apps SDK): a plugin manifest such as readiness_plugin.json (or another *_plugin.json with a runtimes[] block) and an EXPRESS-based MCP server; and (2) the OpenAI Apps (OAI Apps) layout from the ui-widget-developer skill: appPackage/mcpPlugin.json and a raw-http MCP server. When the layout is ambiguous, DEFAULT to the MCP Apps standard (most projects use it). The skill auto-det

UI Design

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winapp-ui-automation

Inspect and interact with running Windows app UIs from the command line using UI Automation (UIA). Use when an AI agent or developer needs to inspect a UI element tree, find controls, take screenshots, click buttons, read or set text, or verify UI state in a running Windows app. Works with any framework WinUI 3, WPF, WinForms, Win32, Electron.

UI Design

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winapp-find-ui

Agent-first search of WinUI 3 controls and samples for a working code example. Built primarily for AI coding agents to pull real, compiling WinUI markup into the editor instead of inventing it, and equally usable by hand. Use when building a WinUI 3 UI and you need to discover which control fits an intent (e.g. 'tabbed layout', 'a card with an image and title', 'swipeable list rows') and get a real code example from the WinUI Gallery or the Windows Community Toolkit (Gallery/Toolkit return XAML and/or C#). The microsoft-ui-reactor ReactorGallery is an opt-in source (C#-only declarative WinUI)

UI Design

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winui-wpf-migration

Migrate WPF applications to WinUI 3 — namespace replacement (System.Windows → Microsoft.UI.Xaml), control mapping (DataGrid→ListView, WrapPanel→ItemsRepeater, TabControl→TabView), threading (Dispatcher→DispatcherQueue), imaging (System.Drawing→BitmapImage), MVVM conversion to CommunityToolkit.Mvvm, and DynamicResource→ThemeResource. Use when converting WPF code, replacing WPF namespaces, or fixing migration build errors.

UI Design

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winui-ui-testing

Automated UI testing for Windows desktop apps — generate a batch test script with the `winapp ui` UI Automation harness, run all tests in one pass, read results. Covers element assertions, interactions, value checking (TextBox, ComboBox, ToggleSwitch), keyboard shortcuts and typing (send-keys), hover, drag-and-drop, touch and pen input, file pickers, flyouts, dialogs, persistence, accessibility audits, and screenshot/video capture. Works on any Windows app (Win32, WPF, WinForms, WinUI 3, packaged or unpackaged).

UI Design

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winui-design

Use when designing, reviewing, or fixing WinUI 3: sample and control discovery with winapp find-ui, layout planning, control choice, Fluent Design alignment, Light/Dark/High Contrast theming, typography, spacing, brushes, accessibility, and XAML data-binding design. Load before authoring new XAML, reviewing UI PRs, migrating desktop UI to WinUI, or choosing between WinUI controls/patterns. Also use when asked to search WinUI samples, find a WinUI Gallery or Community Toolkit example, or find a control that does something.

UI Design

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docs-sync

Keep user-facing docs and DESIGN specification aligned with behavior and API changes.

UI Design

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validate-ui-scenario

Use when reproducing a UI bug or verifying a fix by driving a real VS Code window end to end and capturing evidence. Writes a scenario file, runs it against a dev build or installed Insiders, and produces a captioned video, per-step screenshots, a Playwright trace, and an HTML report to attach to an issue or pull request.

UI Design

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ux-theming

VS Code theming, color tokens, widget styles, focus indicators, and high-contrast theme support. Use when registering colors, styling widgets with theme tokens, or ensuring HC/focus compliance.

UI Design

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design-philosophy

The VS Code design philosophy — a shared Values→Principles→Moves vocabulary for reasoning about UI in design terms instead of raw pixels. Use when designing, building, reviewing, or giving feedback on any visual surface; when deciding a radius, spacing, type role, icon size, border, color, or motion; or when translating a "this feels off" observation into a concrete, principled fix.

UI Design

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cpu-profile-analysis

Analyze V8/Chrome CPU profiles (.cpuprofile) and DevTools trace files (Trace-*.json). Use when: profiling performance, investigating slow functions, comparing code paths, finding bottlenecks, analyzing timeToRequest, understanding call trees from sampling profiler data, analyzing layout/paint/rendering, investigating user timing marks.

UI Design

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component-fixtures

Use when creating or updating component fixtures for screenshot testing, or when designing UI components to be fixture-friendly. Covers fixture file structure, theming, service setup, CSS scoping, async rendering, and common pitfalls.

UI Design

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chat-perf

Run chat perf benchmarks and memory leak checks against the local dev build or any published VS Code version. Use when investigating chat rendering regressions, validating perf-sensitive changes to chat UI, or checking for memory leaks in the chat response pipeline.

UI Design

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accessibility

Primary accessibility skill for VS Code. REQUIRED for new feature and contribution work, and also applies to updates of existing UI. Covers accessibility help dialogs, accessible views, verbosity settings, signals, ARIA announcements, keyboard navigation, and ARIA labels/roles.

UI Design

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launch

Launch Code OSS (VS Code from sources) into an isolated throwaway profile with unique debug ports so you can drive it with @playwright/cli AND attach a Node debugger via dap-cli in the same session. Use when working on VS Code itself and you want to interact with the running workbench, automate chat or UI flows, test UI features, take screenshots, set breakpoints in the renderer / extension host / main process, or combine UI driving with debugging.

UI Design

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rubber-duck

High-signal feedback on plans, designs, implementations, and partial progress. Catches bugs, logic errors, and design flaws that may not be apparent to the original author. Call this skill for any non-trivial task to get a second opinion — the best time is after planning but before implementing. Call it early and often during development to course correct before problems compound. Will NOT comment on style, formatting, or trivial matters.

UI Design

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use-component-explorer

Write and update component explorer fixtures for UI work — fixtures, screenshots, visual testing. USE FOR: "create a fixture for a component", "add fixture groups or variants", "screenshots or visual testing of UI", "adding or changing UI in a component explorer project". DO NOT USE FOR: "set up or install the component explorer", "write a unit test with a test runner".

UI Design

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ux-pr-review

Prepare and run an agent-assisted UX / workflow review of a pull request. Use when the operator says "I'm about to work on a UX PR review, please prepare", "prepare a UX review for PR

UI Design

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prepare-pull-request

Get a branch ready to open as a draft pull request, or ready to move from draft to review. Use when the operator says "prepare a PR", "open a draft PR", "I'm ready to open a PR", "check my branch before I push", "is this ready for review", or asks what is still missing before requesting review. Covers base branch, draft status, description quality, milestone, feature documentation, and commit hygiene. The full verification suite runs only at ready-for-review, never when opening a draft. Does NOT perform the AI code review itself (see CONTRIBUTING.md §6.1-6.5) — but does check that it has run —

UI Design

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fluentui

Patterns for FluentUI React v9 components in VS Code webviews. Use when working with any FluentUI component (Toolbar, Overflow, Menu, Button, Dialog, etc.), debugging layout or styling issues with FluentUI, implementing toolbar overflow (collapsing items into a "..." menu), or integrating FluentUI components in webview panels.

UI Design

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detecting-accessibility-issues

Detects and fixes accessibility issues in React/Fluent UI webviews. Use when reviewing code for screen reader compatibility, fixing ARIA labels, ensuring keyboard navigation, adding live regions for status messages, or managing focus in dialogs.

UI Design

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accessibility-aria-expert

Detects and fixes accessibility issues in React/Fluent UI webviews. Use when reviewing code for screen reader compatibility, fixing ARIA labels, ensuring keyboard navigation, adding live regions for status messages, or managing focus in dialogs.

UI Design

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regex-engine

Design guide for the Trieste regex engine (include/trieste/regex_engine.h). Describes the architecture, data structures, and conventions of the header-only NFA-based regex engine used for pattern matching in the Trieste library. Use this skill when modifying, extending, or debugging the regex engine.

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