Frontend and UI: skills, plugins, subagents, slash commands and mcp servers

user-context official OpenAI skill Stores product and design references for future Product Design work. Use it when an agent needs the same files, links, and preferences across tasks. CX Codex GP ChatGPT 4installs Expert Vue.js Frontend Engineer official github subagent GitHub Copilot subagent specialized in Vue 3, Composition API, TypeScript, and component architecture. Builds frontends, migrates from Vue 2, and optimizes rendering. GitHub Copilot ★ 40,369repo stars react18-auditor official github subagent Scans React 16 and 17 class components for deprecations before moving to React 18.3.1. It reads code without editing files and outputs results to .github/react18-audit.md. GitHub Copilot ★ 40,369repo stars Expert Nuxt Developer official github subagent Guides Nuxt 3 and Nitro development with TypeScript typing. Helps configure data fetching via useFetch, resolve hydration issues, and structure server routes. GitHub Copilot ★ 40,369repo stars Frontend Performance Investigator official github subagent Diagnoses runtime web performance issues, layout shifts, and Core Web Vitals regressions by connecting browser traces directly to your code. GitHub Copilot ★ 40,369repo stars DevTools Regression Investigator official github subagent Reproduces UI regressions in the browser and pinpoints root causes using network and console evidence. GitHub Copilot ★ 40,369repo stars AEM Front-End Specialist official github subagent Builds Adobe Experience Manager components using HTL and Tailwind CSS v4, extracting design tokens directly from Figma. GitHub Copilot ★ 40,369repo stars Accessibility Runtime Tester official github subagent Tests web apps for keyboard operability, focus traps, form error states, and live region updates in runtime. Useful for catching WCAG regressions before deploy. GitHub Copilot ★ 40,369repo stars visual-pr official Awesome Copilot Community plugin Captures UI screenshots with Playwright, annotates elements, and embeds before-and-after views in PR descriptions. Helpful for any layout or frontend change. GitHub Copilot ★ 40,369repo stars site-studio official Ayan Gupta plugin site-studio helps you plan a personal website section by section, write content with an agent, and track changes as the work moves forward. GitHub Copilot ★ 40,369repo stars react19-upgrade official Awesome Copilot Community plugin Automates migration from React 18 to React 19 across codebases. Helps remove deprecated APIs and repair broken test suites without tedious manual rewrites. GitHub Copilot ★ 40,369repo stars react18-upgrade official Awesome Copilot Community plugin Guides React 16 and 17 projects through an upgrade to React 18.3.1, covering deprecated APIs, dependencies, class components, and tests. GitHub Copilot ★ 40,369repo stars power-apps-code-apps official Awesome Copilot Community plugin Scaffolds Power Apps Code Apps projects and provides an agent for Power Platform and Dataverse guidance. GitHub Copilot ★ 40,369repo stars frontend-web-dev official Awesome Copilot Community plugin Adds Playwright MCP testing commands and specialized agents to GitHub Copilot. It helps developers test web interfaces and build React 19.2 components. GitHub Copilot ★ 40,369repo stars fluentui-blazor official Adrien Clerbois plugin Combines a best-practice skill and a live MCP server for Microsoft Fluent UI Blazor. It helps scaffold UI components, bind icons, and migrate projects from v4 to v5. GitHub Copilot ★ 40,369repo stars flight-map-canvas official John Haugabook plugin An interactive GitHub Copilot canvas that turns Google Maps into a 3D flight simulator. The agent flies to coordinates and reports active task progress. GitHub Copilot ★ 40,369repo stars diagram-viewer official Aaron Powell plugin View diagrams in an interactive canvas, drill down by clicking nodes, and read agent-generated explanations alongside the diagram. GitHub Copilot ★ 40,369repo stars color-orb official Aaron Powell plugin Displays a visual orb on canvas that the agent recolors on demand while showing a live activity log. GitHub Copilot ★ 40,369repo stars cms-development official Awesome Copilot Community plugin This plugin brings CMS-focused skills for themes, admin tools, Markdown rendering, and static exports. Use it when a project involves content workflows or publishing. GitHub Copilot ★ 40,369repo stars arcade-canvas official Dan Wahlin plugin This plugin adds six retro Phaser mini-games to a GitHub Copilot canvas. Use it for a short break while agents work on tasks. GitHub Copilot ★ 40,369repo stars apng-studio official Andrea Griffiths plugin Interactive GitHub Copilot canvas extension for creating Animated PNG files. Lets you draw or upload frames, adjust per-frame timing, and export an animated .png. GitHub Copilot ★ 40,369repo stars