Web & Frontend

swestash Bundle

Verify a web app change by driving the real UI in a browser — reproduce the user flow end to end, watch console errors and network failures, exercise loading/error/empty states, capture screenshots as evidence. Use before claiming a UI change works. Triggers: check it in the browser, verify the UI, click through the flow, console errors, test it like a user, smoke test the frontend. Designing persistent test suites → test-suite-design; the generic done-gate → verification-before-completion (this is its browser-specific practice).

swestash Bundle

Design and maintain architecture documentation with multi-level diagrams (C4) and docs-as-code. Triggers: architecture diagram, document the architecture, C4 diagram, system context, container diagram, component diagram, architecture docs, docs-as-code, PlantUML, Structurizr, D2, Mermaid architecture, infrastructure diagram, runtime flow. Use architecture-design for ADRs.

dragoon0x Skill

Full accessibility audit. Focus, semantic HTML, ARIA, contrast, touch targets, motion safety.

dragoon0x Skill

Generate a complete design token set from the current codebase. Extracts colors, type, spacing, shadows, radii and outputs as CSS variables, Tailwind, SCSS, or JSON.

dragoon0x Skill

Auto-fix detectable accessibility issues.

dragoon0x Skill

Export the design profile as a Tailwind CSS configuration.

dragoon0x Skill

Export the design profile as CSS custom properties with dark mode overrides.

dragoon0x Skill

Audit and improve CSS transition declarations. Replace generic easing with intentional curves.

dragoon0x Skill

Generate a mathematical type scale from a base size and ratio. Outputs 8 steps with px values, rem equivalents, and CSS custom properties.

meaningfy-ws Bundle

System-level solution architecture — C4 levels (Context, Container, Component, Code), ArchiMate and UML notations, ADRs, and contracts (OpenAPI/AsyncAPI/LinkML). Use for system and solution design, architecture documentation, and architectural decision-making. Distinct from code structure inside a service (see the cosmic-python skill).

eroslifestyle Skill

TypeScript best practices, patterns, and idioms. Auto-activated when working with .ts/.tsx files. Covers strict mode, React patterns, Node.js patterns.

eroslifestyle Bundle

Best practices for Remotion - Video creation in React

langwatch Skill

Deep-dive diagnosis of how your AI agent behaves in production. Explores LangWatch analytics and traces end to end to map failure patterns, dissatisfied users, token cost hotspots, edge cases, behavior changes, and outliers, then delivers an HTML report where every finding links to real example traces. Use when you want to truly understand what your agent is doing in production.

langwatch Skill

Author a dashboard widget — a small React component backed by named LangWatchQL queries — from a plain question. Discovers the analytics schema, writes the queries, writes the widget file, saves it, then proves it renders. Use when asked to build, prototype, or iterate on a custom chart widget, or to add a widget beyond what a standard saved chart can express.

bahayonghang Bundle

Author Typst slide decks with the Touying package. Use when creating or editing .typ presentations: applying or building Touying themes (e.g. metropolis), turning headings or #slide into slides, incremental reveals (#pause, dynamic content), speaker notes via pdfpc, and page layout config. Not for non-Typst decks (HTML, PPT, reveal.js, Marp) or ordinary non-presentation Typst documents.

bahayonghang Bundle

Independent pre-merge review of a git diff, PR, or named files. Use when the user asks to review a PR, inspect current git changes, or hunt functional regressions, missed scenarios, wrong assumptions, concurrency bugs, and test gaps as an independent reviewer who does not defend the author's approach / 独立审查、功能回归、遗漏场景、错误假设、并发、测试盲区. Also use for a full-spectrum multi-dimension project audit across correctness, security, performance, readability, testing, and architecture / 全维度代码审计 / 全维度的代码审计. Not for maintainability-only or structure/refactoring reviews; not for applying code changes; not for repository health reports spanning compliance, privacy, cost, or accessibility. Do not modify product code. Output follows the discussion language.

bahayonghang Bundle

Create self-contained HTML artifacts (single-file by default, split bundles when oversized) for complex, reviewable, or shareable work outputs. Use for an HTML artifact, browser-viewable report, implementation plan, PR/code-review report, dashboard, or mini deck, or for long Markdown-like outputs needing navigation or diagrams. Not for short answers, commit messages, or production UI.

bahayonghang Bundle

Use when the user wants a read-only disk/storage analysis on macOS or Windows: 磁盘满了, C盘满了, 空间不够, 存储分析, 占空间, 清缓存, storage analysis, disk cleanup, or Chinese 内存满了 when they mean disk space. Scans known hotspots, classifies cache vs user data vs keep, and writes an HTML report with copyable commands. After this-turn approval of shown paths, may start a local report server that only moves allowlisted cache paths to Trash. Do not use for RAM/process memory, Windows dev-process cleanup, Downloads file sorting, startup-app optimization, or Linux-only hosts.

bahayonghang Bundle

Use when a Rust or Cargo build is slow and the user wants it diagnosed or sped up: profiling compile times with cargo --timings or -Zself-profile, finding whether the bottleneck is dependencies, codegen/LLVM, linking, or one oversized crate, and applying targeted fixes such as faster linkers (lld, mold, wild), incremental compilation, dev/release profile tuning, workspace splitting, Cranelift, the nightly parallel frontend, or CI caching with sccache. Also for reviewing .cargo/config.toml or Cargo.toml profile settings for build speed. Not for making the compiled program run faster (runtime optimization), general Rust coding or debugging questions, or non-Rust build systems.

bahayonghang Bundle

Modify the Beautiful Mermaid live editor itself rather than writing ordinary Mermaid diagrams. Use when the task mentions the Beautiful Mermaid repo, editor.ts, generated editor.html, config panel, themes or dark mode, zoom, PNG/SVG export, sample presets, or renderer wiring. Not for generic Mermaid syntax help.

sgcarstrends Bundle

Operate the Resend platform from the terminal — send emails (including React Email .tsx templates via --react-email), manage domains, contacts, broadcasts, templates, webhooks, API keys, logs, automations, and events via the `resend` CLI. Use when the user wants to run Resend commands in the shell, scripts, or CI/CD pipelines, or send/preview React Email templates. Always load this skill before running `resend` commands — it contains the non-interactive flag contract and gotchas that prevent silent failures.

sgcarstrends Skill

Optimize application performance - bundle size, API response times, database queries, React rendering, and serverless function performance. Use when investigating slow pages, profiling, load testing, or before production deployments.

sgcarstrends Skill

Optimize application performance - bundle size, API response times, database queries, React rendering, and serverless function performance. Use when investigating slow pages, profiling, load testing, or before production deployments.

sgcarstrends Bundle

Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the `cacheComponents` flag, work through a flood of blocking-prerender / instant validation errors, run the `cache-components-instant-false` codemod, or decide between opting routes out with `export const instant = false` and fixing them in place.

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。

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.

huytieu Bundle

Run one task through the V-model verification loop: CP-2 plan → CP-3 build → CP-3v component verify → CP-4 integration verify (full lane) → CP-5 acceptance. The worker never grades its own homework; evidence rows trace back to AC-n. Opt-in: invoke with /closed-loop or by asking for the closed loop, proper verification, or an evidence trail. Ordinary work does not run this.

huytieu Bundle

Anti-slop frontend skill for landing pages, portfolios, and redesigns. The agent reads the brief, infers the right design direction, and ships interfaces that do not look templated. Real design systems when applicable, audit-first on redesigns, strict pre-flight check.

georgekhananaev 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.

practice019 Bundle

Recreate an authorized live website or app URL as a faithful, runnable, frontend-only local implementation.

practice019 Bundle

Implement a selected image, screenshot, mockup, generated concept, or design frame as a faithful, responsive, interactive frontend in the target codebase.

practice019 Bundle

Narrow conversion skill. Invoke only when the user explicitly asks to convert an existing local or blob-hosted HTML analytics report into a Google Doc, DOCX, or shareable document.

practice019 Bundle

Narrow conversion skill. Invoke only when the user explicitly asks to convert an existing HTML analytics report into a native Google Slides deck.

joshuashepherd Bundle

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

joshuashepherd Bundle

Programmatic video creation with React via Remotion — compositions, animations, motion graphics, rendered to MP4. USE WHEN video, animation, motion graphics, video rendering, React video, intro video, YouTube video, TikTok video, video production, render video, content to animation, animate content, video overlay.

aladicf Skill

Run technical quality checks across accessibility, performance, theming, responsive design, and anti-patterns. Generates a scored report with P0-P3 severity ratings and actionable plan. Use when the user wants measurable accessibility, performance, responsive, theming, or anti-pattern findings—not when they mainly want an overall UX critique or final visual/detail polish.