Web & Frontend

bitwarden Bundle

Bitwarden's product content style guide for end-user-facing GUI copy — voice, tone, AP-style-with-exceptions grammar, sentence case in UI, and accessibility-first language at a U.S. 7th-grade reading level.

seflless Bundle

Render inline interactive visuals — SVG diagrams, HTML widgets, charts, and explainers — directly in the conversation. Use this skill whenever the user asks to visualize, diagram, chart, illustrate, or explain something visually, or when an explanation would genuinely benefit from a spatial/interactive diagram rather than text. Also triggers for: flowcharts, architecture diagrams, data visualizations, interactive explainers, comparison layouts, UI mockups, and any request containing 'show me', 'draw', 'map out', 'visualize', or 'diagram'. Even when the user doesn't explicitly ask for a visual, use this skill proactively when the topic has spatial, sequential, or systemic relationships that a diagram would clarify better than prose.

seflless Bundle

Create video compositions with Editframe using HTML web components or React. Supports video, audio, images, text, captions, transitions, and cloud rendering.

vinnie357 Skill

Guide for implementing web accessibility (WCAG). Use when designing UI components, reviewing interfaces for accessibility, or ensuring compliance with W3C WAI standards.

bitwarden Bundle

Use when determining what test coverage ALREADY exists for a specific change (a PR, Jira key, Tech Breakdown doc, Testmo CSV, changed paths, or named component). Triggers on "what's already tested", "does this PR have tests", "what coverage exists for", "is this component covered", or "which behaviors have no test today". This is a backward-looking inventory of existing coverage for a concrete change. Do NOT use it to recommend or decide which new tests to add ("should I add integration tests here", "are unit tests enough"), to design a test strategy or plan, to run or fix existing tests, or to explain testing concepts like the test pyramid or which layers a repo uses — those are all out of scope.

seflless Bundle

Generate video compositions from brand websites or descriptions. Produces an inspectable creative brief before generating HTML.

vinnie357 Skill

Guide for implementing Material Design 3 (Material You). Use when designing Android apps, implementing dynamic theming, or following Material component patterns.

vinnie357 Bundle

Build and query a knowledge graph of a codebase, docs, and mixed media with the graphify CLI. Use when installing graphify via mise, building or updating a code graph, exporting it (GraphML, SVG, Neo4j, Obsidian, call-flow HTML), or querying it with query/path/explain/affected instead of reading raw files.

ahmed3elshaer Skill

Apple Liquid Glass design patterns for SwiftUI iOS 26 - glass effects, morphing, containers, interactive glass, tinting, accessibility, and cross-platform glass design.

vinnie357 Bundle

Guide for embedding interactive demos and mock UIs in Slidev presentations. Use when adding clickable prototypes, animated workflows, Vue components, or standalone HTML5 mock pages to slide decks.

ahmed3elshaer Skill

Mobile accessibility patterns for Android and iOS - content descriptions, touch targets, screen reader support, WCAG compliance, dynamic type, and color contrast.

uw-ssec Bundle

Use when starting a new frontend project and choosing a CSS approach, refactoring inconsistent CSS, hitting specificity wars, integrating a component library, adding theming/dark mode, or deciding between BEM, Tailwind, CSS Modules, or CSS-in-JS.

uw-ssec Bundle

Use when implementing or extending a shared component library — scaffolding new components with CVA variants, writing Storybook stories, wiring visual regression, or auditing existing components for state and a11y coverage.

uw-ssec Bundle

Use when auditing a web interface for WCAG 2.2 AA/AAA compliance, fixing reported accessibility violations, verifying ARIA usage, checking keyboard navigation or color contrast, or preparing accessibility documentation for a release.

uw-ssec Bundle

Use when implementing or scaffolding a reusable UI component in React, Vue, Svelte, or Web Components/Lit; when porting a design across frameworks; or when a component needs hooks, composables, reactive state, slots, or shadow-DOM encapsulation.

uw-ssec Bundle

Use when laying out a page or component, choosing between CSS Grid and Flexbox, setting up a column grid, aligning nested components to a parent grid, or building responsive card/dashboard layouts.

uw-ssec Skill

Master interactive dashboard and application development with Panel and Param. Use this skill when building custom web applications with Python, creating reactive component-based UIs, handling file uploads and real-time data streaming, implementing multi-page applications, or developing enterprise dashboards with templates and theming.

uw-ssec Bundle

Set up and maintain documentation for scientific Python packages. Covers Sphinx, MkDocs, NumPy-style docstrings, Diataxis framework, accessibility standards, and documentation hosting with Read the Docs.

vishalsachdev Bundle

Create an interactive educational MicroSim using the p5.js JavaScript library with distinct regions for drawing and interactive controls. Each MicroSim is a directory located in the /docs/sims folder. It has a main.html file that references the javascript code and the main.html can be referenced as an iframe from the index.md. The metadata.json contains Dublin core metadata about the MicroSim.

razbakov Skill

Standards and process for building modern web projects with AI. Content-first, mobile-first, component-based methodology. Use when starting a new project, creating features, designing components, making architecture decisions, or when the user asks to build something for the web.

aelaguiz Bundle

Upload local artifact files or directories (HTML reports, screenshots, analysis bundles, any static files) to the team's Cloudflare R2 share bucket and return a public unguessable https://share.fun.country/<slug>/... URL. Use when the user says 'upload this to cloudflare somewhere I can share', wants a link to drop in Slack, or wants a local HTML report viewable by teammates. Requires a secret env file at ~/.config/cf-share/env (see references/setup.md). Not for deploying apps or product content (ps-content CDN), not for claude.ai Artifacts, and not for material that must stay private.

razbakov Skill

Add internationalization (i18n) to a Nuxt 3 project — install @nuxtjs/i18n, extract hardcoded strings from components into locale JSON files, configure routing strategy, create a language switcher component, and fix hosting config for SSR locale routes. Use this skill whenever the user wants to translate a Nuxt site, add multiple languages, add a language switcher, localize content, or migrate a monolingual Nuxt site to multilingual. Also triggers when adding specific languages (e.g., "add German to my site") or when the user mentions i18n, localization, or translation in a Nuxt context.

vishalsachdev Bundle

This skill generates interactive workflow diagrams using the Mermaid JavaScript library for placement in a narrow region of a textbook using an iframe. Use this skill when users request creating flowcharts, process diagrams, workflow visualizations, or decision trees for educational textbooks. The skill creates MicroSim packages with standalone HTML files featuring colorful backgrounds, 16-point fonts, and top-down rendering by default, saved to /docs/sims/ following the MicroSim pattern.

vishalsachdev Bundle

This skill generates interactive timeline visualizations using the vis-timeline JavaScript library. Use this skill when users need to create historical timelines, project timelines, event sequences, or any chronological data visualization with optional category filtering. The skill creates a complete MicroSim package with HTML, CSS, JSON data, and documentation.

vishalsachdev Skill

Load for ANY bug-fix task — code, UI/UX, content, docs, accessibility, or workflow. Reproduce → isolate → fix → prevent cycle with real-session patterns. GEPA-evolved from 353 real Claude Code session bugfixes (+31pp holdout).

vishalsachdev Bundle

Generate Canvas-ready HTML pages and assignments for BADM 350 Technology & AI Strategy course. Use when building weekly module content from markdown lesson plans, creating "Start Here" pages with Tuesday/Thursday session structure, or generating assignment HTML with rubrics. Triggers on requests to "build Canvas content", "create week X page", or "generate assignment for BADM 350".

razbakov Skill

Generate images from self-contained HTML/CSS designs. Use when the user wants a reproducible, code-first pipeline to produce print or social graphics (posters, flyers, ads) from HTML and screenshot automation.

vishalsachdev Bundle

Best practices for Remotion video creation in React. Use when creating video compositions, animations, or media processing with Remotion. Covers timing, sequencing, audio, captions, transitions, 3D content, asset handling, and rendering. Triggers on Remotion components, useCurrentFrame, interpolate, Composition, Sequence, or AbsoluteFill.

vishalsachdev Bundle

React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.

ninehills Bundle

把图片、截图、海报、PPT 页面截图、HTML 或 SVG 设计稿转换成可编辑 PPTX 的 Codex skill。 当用户需要 image2ppt、image2pptx、图片转 PPT、截图转 PPT、PNG/JPEG 转可编辑幻灯片、 HTML/SVG 转 PPTX、把设计图拆成图片组件和文本框再拼成 PowerPoint、 或希望复用 Codex 内置生图能力把平面图重建为多元素可编辑 PPT 时，应该使用此 skill。 在 Codex 中处理二进制图片时，默认结合 imagegen skill：先用 Codex 视觉理解版式， 再用内置图片生成/编辑能力生成或清理多个组件图片，最后用本 skill 的脚本拼装 PPTX。

razbakov Bundle

Seed a new or empty Instagram account with a 9-post grid (3×3) so the profile looks established the moment a new visitor lands. Designed for festivals, new businesses, product launches, conferences, communities — any time an empty IG profile would hurt conversion from external traffic (QR scans, flyer drops, cross-promo). Generates assets via /image-from-gemini (per content-publishing rules — never HTML), writes captions with hashtag sets, and outputs a posting order + cadence plan. Trigger generously: phrases like '9 posts for instagram', 'fill my IG', 'starter grid', 'launch grid', 'instagram seed', '9-post grid', 'IG account not to look empty', 'first instagram posts', 'feed bootstrap', '3x3 grid', 'instagram launch content'. Even if the user mentions only one piece (just the images, just the captions, just the order), use this skill — the grid only works as an integrated bundle.

aelaguiz Bundle

Use as a Flutter app-building reference for architecture, code quality, Dart style, state management, lifecycle, performance, rendering, testing, CI, accessibility, localization, security, platform integration, and Flame/game-loop guidance. Use when authoring, reviewing, repairing, or diagnosing Flutter mobile apps or games. Do not use for non-Flutter frontend work, generic visual design, running Flutter tooling, or latest Flutter/Dart facts without checking official docs.

ninehills Bundle

React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.

ninehills Bundle

Create technical and product diagrams — architecture, flowchart, sequence, state machine, ER / data model, timeline, swimlane, quadrant, nested, tree, org chart, layer stack, venn, pyramid — as standalone HTML files with inline SVG. Ships with a neutral editorial skin and a first-run gate that prompts users to customize the style guide (colors, fonts) from their own website before generating. Includes annotation-callout primitive and optional sketchy variant.

aelaguiz Bundle

Build, restyle, or audit Google Sheets (and Excel) workbooks so a human can read, scan, change and trust them: header-only frozen rows, one line per cell, merges only for group headers, numbers right and text left, consistent number formats, one documented colour key, and every number owned: observations shown as data, assumptions styled as inputs, everything derived as formulas. Use when the user asks to make a spreadsheet readable, consistent, presentable or user-friendly, to fix freeze panes, paragraphs in cells, hardcoded numbers or inconsistent formatting, to apply a house style through the Sheets API or gws CLI, or to audit a sheet's formatting. Not for choosing the analysis or metrics, data cleaning or statistics, chart or dashboard design outside the grid, or HTML/PDF report styling.

mcj-coder Skill

Use this skill whenever changes affect a deployable component or library to determine the correct semantic version bump based on conventional commits, scope, and observed impact.