Web & Frontend

kok-o Skill

Vitest, React Testing Library, and Playwright testing standards. Enforces TDD/BDD, test pyramid, zero brittle mocks, and complete assertion coverage.

kok-o Skill

Professional UI/UX design skill with strict anti-pattern enforcement. Prevents AI slop design, enforces accessibility standards, semantic color palettes, proper spacing, and bans overused design clichés.

kok-o Skill

ContextOS skill for Web Accessibility

wesleyegberto Skill

Master modern React state management with Redux Toolkit, Zustand, Jotai, and React Query. Use when setting up global state, managing server state, or choosing between state management solutions.

wesleyegberto Skill

Build scalable design systems with Tailwind CSS v4, design tokens, component libraries, and responsive patterns. Use when creating component libraries, implementing design systems, or standardizing UI patterns.

wesleyegberto Skill

Universal coding standards, best practices, and patterns for TypeScript, JavaScript, React, and Node.js development.

wesleyegberto Skill

Orchestrate end-to-end React feature development from idea or plan to reviewed, committed code. Use this skill proactively when the user wants to implement a feature, page, component, or UI flow in a React application — even if they just say "implement this", "build this", "add this to the app", "develop this plan", or "create this screen". Spawns parallel specialist subagents for codebase exploration, UX design, React implementation, testing, and code review, then guides the user through approval, commit, and optional PR creation.

wesleyegberto Skill

Build production React Native apps with Expo, navigation, native modules, offline sync, and cross-platform patterns. Use when developing mobile apps, implementing native integrations, or architecting React Native projects.

wesleyegberto Skill

Master Next.js 14+ App Router with Server Components, streaming, parallel routes, and advanced data fetching. Use when building Next.js applications, implementing SSR/SSG, or optimizing React Server Components.

wesleyegberto Skill

Orchestrate end-to-end Next.js feature development from idea or plan to reviewed, committed code. Use this skill proactively when the user wants to implement a feature, page, component, route, or Server Action in a Next.js application — even if they just say "implement this", "build this", "add this to the app", "develop this plan", or "create this screen". Spawns parallel specialist subagents for codebase exploration, UX design, Next.js implementation, testing, and code review, then guides the user through approval, commit, and optional PR creation.

wesleyegberto Skill

Test web applications with screen readers including VoiceOver, NVDA, and JAWS. Use when validating screen reader compatibility, debugging accessibility issues, or ensuring assistive technology support.

wesleyegberto Bundle

Apply foundational design principles: affordances, signifiers, constraints, feedback, and conceptual models. Use when the user mentions "why is this confusing", "affordance", "error prevention", "discoverability", "human-centered design", or "fault tolerance". Covers the gulfs of execution and evaluation. For usability scoring, see ux-heuristics. For iOS-specific patterns, see ios-hig-design.

wesleyegberto Bundle

Comprehensive reference for software architecture: fundamentals, architectural styles (layered, pipeline, microkernel, microservices, event-driven, SOA), architectural patterns (hexagonal/ports & adapters, CQRS, event sourcing, MVC), enterprise application patterns, and integration patterns. ALWAYS activate this skill when: reviewing system or component architecture, designing new services or systems, doing system design sessions, making architectural decisions, evaluating trade-offs between architectural styles, creating new bounded contexts or microservices, discussing modularisation, scalability, or extensibility at the system level, documenting architecture (ADR, Architecture Haiku), or any time architectural quality attributes (availability, scalability, maintainability, fault tolerance) are being discussed.

yunseo-kim Bundle

Answer questions about the Vercel AI SDK and help build AI-powered features. Use when developers ask about AI SDK functions like generateText, streamText, ToolLoopAgent, embed, or tools, want to build AI agents, chatbots, RAG systems, or text generation features, have questions about AI providers (OpenAI, Anthropic, Google, etc.), streaming, tool calling, structured output, or embeddings, or use React hooks like useChat or useCompletion. Triggers on: "AI SDK", "Vercel AI SDK", "generateText", "streamText", "useChat", "useCompletion".

yunseo-kim Bundle

Comprehensive guide for implementing feature flags and A/B tests using the Flags SDK (the `flags` npm package). Use when: (1) Creating or declaring feature flags with `flag()`, (2) Setting up feature flag providers/adapters (Vercel, Statsig, LaunchDarkly, PostHog, GrowthBook, Hypertune, Edge Config, OpenFeature, Flagsmith, Reflag, Split, Optimizely, or custom adapters), (3) Implementing precompute patterns for static pages with feature flags, (4) Setting up evaluation context with `identify` and `dedupe`, (5) Integrating the Flags Explorer / Vercel Toolbar, (6) Working with feature flags in Next.js (App Router, Pages Router, Middleware) or SvelteKit, (7) Writing custom adapters, (8) Encrypting/decrypting flag values for the toolbar, (9) Any task involving the `flags`, `flags/next`, `flags/sveltekit`, `flags/react`, or `@flags-sdk/*` packages. Triggers on: feature flags, A/B testing, experimentation, flags SDK, flag adapters, precompute flags, Flags Explorer, feature gates, flag overrides.

yunseo-kim Bundle

Implement, configure, and customize Streamdown — a streaming-optimized React Markdown renderer with syntax highlighting, Mermaid diagrams, math rendering, and CJK support. Use when working with Streamdown setup, configuration, plugins, styling, security, or integration with AI streaming (e.g., Vercel AI SDK). Triggers on: (1) Installing or setting up Streamdown, (2) Configuring plugins (code, mermaid, math, cjk), (3) Styling or theming Streamdown output, (4) Integrating with AI chat/streaming, (5) Configuring security, link safety, or custom HTML tags, (6) Using carets, static mode, or custom components, (7) Troubleshooting Tailwind, Shiki, or Vite issues.

yunseo-kim Bundle

Unified documentation workflow for writing, reviewing, and updating technical docs across repositories. Use when users ask to write or edit docs, review doc quality, map code changes to doc impact, scaffold new documentation, update README/API guides, or improve docs in `/docs` and `*.md`/`*.mdx` files. Supports self-contained profile-based behavior for generic docs, Next.js docs, and Angular docs.

yunseo-kim Bundle

Expert UX design assistance for user research, wireframing, prototyping, and design strategy. Covers user interviews, personas, accessibility (WCAG), information architecture, interaction design, microcopy, visual hierarchy, and design systems.

yunseo-kim Bundle

Test local web applications using Playwright with server lifecycle management, browser automation, and visual verification. Use for frontend testing, debugging UI, capturing screenshots, and viewing browser logs.

yunseo-kim Bundle

Create distinctive, production-grade frontend interfaces with high design quality. Use when building web components, pages, applications, posters, or when styling and beautifying any web UI.

yunseo-kim Bundle

Generate comprehensive Vitest and React Testing Library tests for frontend components, hooks, and utilities. Covers test structure, incremental workflow, async patterns, mocking strategies, and coverage goals. Use when writing or reviewing frontend tests, improving coverage, or setting up testing infrastructure for React projects.

yunseo-kim Bundle

Batch-generate images via OpenAI Images API using GPT Image models or DALL-E. Includes random prompt sampler and HTML gallery output.

yunseo-kim Bundle

Refactor high-complexity React components using proven patterns for hook extraction, component splitting, conditional simplification, and API/data layer separation. Use when components exceed 300 lines, have deep nesting, mix business logic with UI, or manage too many state variables. Avoid for simple or well-structured components.

yunseo-kim Bundle

Modern web development expertise covering React, Node.js, TypeScript, databases, and full-stack architecture patterns

yunseo-kim Bundle

Review frontend code (React, TypeScript, CSS) for code quality, performance, and best practices. Supports pending-change reviews and focused file reviews with urgency-based findings and structured output templates.

yunseo-kim Bundle

Build multi-component HTML artifacts using React, Tailwind CSS, and shadcn/ui. Use for complex interactive artifacts requiring state management, routing, or component libraries, not for simple single-file HTML/JSX artifacts.

yunseo-kim Bundle

Expert guidance for Next.js Cache Components and Partial Prerendering (PPR). Proactively activates in projects with cacheComponents enabled, providing patterns for 'use cache' directive, cacheLife(), cacheTag(), cache invalidation, and parameter permutation rendering.

vignesh2027 Skill

Activates the SeniorDev agent for full-stack software engineering. Use this skill when you need production-ready code: Next.js 14 frontends, FastAPI backends, TypeScript strict-mode components, PostgreSQL schemas, Redis caching, authentication flows, or complete REST/GraphQL APIs. SeniorDev always outputs complete files — never partial snippets — with full error handling, type safety, and setup instructions included.

vignesh2027 Skill

Activates CodeMigrator — a specialist in migrating codebases between frameworks, languages, or major versions. Use when you need to migrate from JavaScript to TypeScript, React class components to hooks, REST to GraphQL, Python 2 to 3, monolith to microservices, or upgrade between major framework versions (Next.js 12→14, Django 3→5, Rails 6→7).

vignesh2027 Skill

Activates WebAppTester for automated web application testing strategy, test case design, and quality assurance. Use when you need to design a test plan for a web app, write Playwright or Cypress end-to-end tests, create API integration test suites, design accessibility test checklists, or analyze test coverage gaps.

thelobbi Bundle

Form orchestration with Fluent UI React v9 — Field component, validation display, Formik + Yup integration, React Hook Form + Zod integration, multi-step wizard patterns, and accessible form design.

thelobbi Bundle

Deep expertise in Microsoft Loop — collaborative workspaces, pages, and portable Loop components embeddable across Teams, Outlook, and OneNote. Covers Graph API workspace management (fileStorage containers), Loop component types (tables, task lists, voting, progress trackers), page design patterns, Power Automate integration, and tenant-level admin governance via Teams admin center and Microsoft 365 admin center. Triggers on: "microsoft loop", "loop workspace", "loop page", "loop component", "embed loop component", "loop table", "loop task list", "create loop workspace", "loop in teams", "loop in outlook", "loop admin", "loop governance", ".loop file", ".fluid file", "fluid framework", "portable content", "loop sharing", "loop export", "loop component link", "loop collaboration", "loop template", "loop content component", "set up loop workspace", "loop for project", "loop pages api", "loop container".

thelobbi Bundle

Next.js integration for Fluent UI React v9 — App Router setup with 'use client' boundaries, Pages Router setup, SSRProvider and RendererProvider configuration, Griffel AOT with webpack, fluentui-nextjs-appdir-plugin, and known SSR bundle size workarounds.

thelobbi Bundle

Deep knowledge of Griffel CSS-in-JS for Fluent UI React v9 — makeStyles, makeResetStyles, shorthands, mergeClasses, conditional styles, AOT compilation (webpack + Vite), selector performance, RTL support, icon styling, slot-based styling, CSS variables, and DevTools.

thelobbi Bundle

Data visualization with @fluentui/react-charting — LineChart, BarChart, PieChart, DonutChart, AreaChart, HeatMapChart, SankeyChart, TreeChart, GaugeChart, theming integration, responsive patterns, and accessibility in charts.

thelobbi Bundle

Extending and customizing Fluent UI React v9 — slots (4 levels of customization), custom variants, customStyleHooks, headless/unstyled patterns, custom component authoring, and comprehensive v8 to v9 migration guide with component mapping and incremental coexistence strategy.