Web & Frontend

coderabbitai Skill

Expert guidance for Satori — Vercel's library that converts HTML and CSS to SVG, commonly used to generate dynamic OG images for Next.js and other frameworks.

coderabbitai Skill

shadcn/ui expert guidance — CLI, component installation, composition patterns, custom registries, theming, Tailwind CSS integration, and high-quality interface design. Use when initializing shadcn, adding components, composing product UI, building custom registries, configuring themes, or troubleshooting component issues.

jacob-balslev Skill

Use when designing or auditing dependency structure: package boundaries, runtime vs build dependencies, adapter layers, duplicate-purpose libraries, supply-chain risk, upgrade policy, lock-in, and dependency graph health. Do NOT use for choosing a major framework (use `framework-fit-analysis`), vulnerability-only review (use `owasp-security`), or routine refactoring without dependency boundary changes (use `refactor`). Do NOT use for choose between Next.js, Remix, and Astro for a new app. Do NOT use for scan dependencies only for known vulnerabilities. Do NOT use for refactor this module without changing dependency boundaries. Do NOT use for write an ADR after the dependency decision is accepted.

jacob-balslev Skill

Use when structuring information for findability: navigation, page hierarchy, docs architecture, sitemap shape, labeling systems, wayfinding, and content grouping. Do NOT use for formal category-governance work (use `taxonomy-design`), responsive page composition (use `layout-composition`), component/token architecture (use `design-system-architecture`), or sentence-level UI text (use `microcopy`). Do NOT use for make the category taxonomy and assignment rules for this skill library. Do NOT use for define design tokens, component APIs, and theming rules. Do NOT use for rewrite this tooltip and empty-state copy. Do NOT use for audit keyboard accessibility and ARIA semantics. Do NOT use for structure inside a page or screen (use layout-composition). Do NOT use for sentence-level UI text (use microcopy).

jacob-balslev Skill

Use when designing or reviewing React Server Components: what an RSC can do (async, data fetching, server-only imports) versus what it cannot (state, effects, event handlers, browser APIs), where to draw the server/client boundary in the tree, how to keep private data from leaking across that boundary, and how RSC composes with Suspense to stream content without a separate API layer. Covers Next.js App Router as the canonical implementation, but the discipline is framework-agnostic. Do NOT use for the 'use client' directive mechanics (use client-server-boundary), hook discipline on Client Components (use hooks-patterns), rendering strategy choice (use rendering-models), the server-action mutation surface (use server-actions-design), or the wider Suspense discipline (use suspense-patterns). Do NOT use for add a click handler to an existing component (use hooks-patterns and client-server-boundary). Do NOT use for design the public API for a third-party integration (use api-design).

coderabbitai Skill

Expert guidance for Geistdocs, Vercel's documentation template built with Next.js and Fumadocs — MDX authoring, configuration, AI chat, i18n, feedback, deployment. Use when creating documentation sites, configuring geistdocs, writing MDX content, or setting up docs infrastructure.

jacob-balslev Skill

Use when designing reusable component modules — composition patterns, compound components, slot/children APIs, render props, headless component contracts, and the choice between configuration and composition. Do NOT use for application-level architecture, single-use feature components, or visual styling decisions. Do NOT use for Choose the border radius value for cards. Do NOT use for Decide where the OrderDetailPage component lives in the folder structure. Do NOT use for Pick the brand font for headings.

jacob-balslev Skill

Use when refactoring React components with boolean-prop proliferation, designing flexible component APIs, building reusable component libraries, or reviewing component architecture — compound components, explicit variant components, children-over-render-props, the context provider state/actions/meta interface, boolean state-explosion auditing, and the React 19 API migration (ref-as-prop, use() over useContext()). Do NOT use for render performance optimization (memoization, suspense, profiling), visual styling, or Next.js routing/server-component framework patterns. Do NOT use for Memoize this component tree to stop re-renders. Do NOT use for Style this card with the brand spacing and color tokens. Do NOT use for Set up the App Router route and a server component for this page.

jacob-balslev Bundle

Use when authoring or reviewing a periodic-scan job that walks every external link in a markdown content set and flags 404s, redirects to unrelated content, and connection failures. Activate this skill whenever the task says 'check our links' or mentions a link-rot scan, broken-link audit, or link-health report. Do NOT use for live runtime link checking inside the rendered page (use a frontend a11y / UX skill) or for chasing a specific broken-link incident from a user report (use debugging).

jacob-balslev Bundle

Use when dispatching a content-fetch task across the multiple sources the site reads from — local markdown under `content/`, MDX with React components under `content/mdx/`, and a headless-CMS sync under `lib/cms/`. Activate this skill whenever the task says 'render this content' or 'where does this post come from' without naming a specific source, or when adding a new source to the routing surface. Do NOT use for the actual rendering of one source (use the per-source skill — `markdown-post-frontmatter-validation`, an MDX rendering skill, or a CMS-sync skill) or for chasing a specific routing bug (use debugging).

coderabbitai Skill

AI Elements component library guidance — pre-built React components for AI interfaces built on shadcn/ui. Use when building chat UIs, message displays, tool call rendering, streaming responses, reasoning panels, or any AI-native interface with the AI SDK.

jscraik Skill

Review services, APIs, and multi-component systems for reliability risks including failure modes, cascading failures, resilience gaps, and SLO readiness. Use when the work involves new services, significant service changes, multiple external dependencies, or high blast-radius failure scenarios.

coderabbitai Bundle

Vercel Services — deploy multiple services within a single Vercel project. Use for monorepo layouts or when combining a backend (Python, Go) with a frontend (Next.js, Vite) in one deployment.

jacob-balslev Bundle

Use when writing a Next.js Server Action that accepts user-submitted form data, mutation parameters, or any client-originated input. Every Server Action is a public HTTP endpoint regardless of how it is called — validate with Zod and check authentication as the first two operations before touching the database. Do NOT use for GET route handlers or Server Components that fetch data (those have no user-supplied input); do NOT use for Stripe webhook handlers (use stripe-webhook-signature-verification instead).

jacob-balslev Bundle

Use when authoring or reviewing the build-time image pipeline config — defining responsive srcset breakpoints, picking output formats (AVIF / WebP / JPEG fallback), tuning compression quality per format, and ensuring the pipeline never produces a lossy artifact for source PNGs with transparency. Activate this skill whenever the task touches `lib/images/pipeline.config.ts`, `scripts/build-images.ts`, or any code path that resizes or recompresses content images. Do NOT use for runtime image rendering choices (use a frontend skill) or for chasing a specific build failure (use debugging).

jacob-balslev Bundle

Use when validating incoming Stripe webhook requests in a Node.js or Next.js backend before processing any payment event. Verifies the `stripe-signature` header against `STRIPE_WEBHOOK_SECRET` using Stripe's HMAC-SHA256 scheme, and rejects replays older than 300 seconds. Do NOT use for general HTTP signature validation (use a generic crypto-signature skill), for processing the webhook payload after signature is confirmed (use payment-provider-router), or for Stripe API calls that are not webhook-driven.

coderabbitai Skill

React best-practices reviewer for TSX files. Triggers after editing multiple TSX components to run a condensed quality checklist covering component structure, hooks usage, accessibility, performance, and TypeScript patterns.

cgallic Skill

Build a Gumroad-ready digital product from scratch — ebook, card deck, playbook, Notion template, or flipbook. Walks from concept → content outline → design brief → per-item markdown → images → multi-format build (PDF, HTML flipbook, Notion, card deck) → Gumroad sales page + email blast + launch assets. Use when "make a digital product", "build an ebook", "create a playbook", "card deck", "notion template product", "gumroad product", "make a pdf to sell", or any request to ship a sellable information product.

coderabbitai Bundle

Best practices and example-driven guidance for building native macOS SwiftUI scenes and components, including windows, commands, toolbars, settings, split views, inspectors, menu bar extras, and keyboard-driven workflows. Use when creating or refactoring macOS SwiftUI UI, choosing scene types, wiring menus or settings, or needing desktop-specific component patterns and examples.

coderabbitai Bundle

Best practices and example-driven guidance for building SwiftUI views and components, including navigation hierarchies, custom view modifiers, and responsive layouts with stacks and grids. Use when creating or refactoring SwiftUI UI, designing tab architecture with TabView, composing screens with VStack/HStack, managing @State or @Binding, building declarative iOS interfaces, or needing component-specific patterns and examples.

stevenke1981 Skill

當使用者需要「無障礙稽核師」處理測試驗證相關任務時啟動。本 Agent 會先確認目標、資料來源、限制與驗收標準，再建立可重現的測試設計、證據、缺陷分級與放行判準，並輸出證據、風險、下一步與需要人工覆核的事項。

frankxai-agentic-creator-os Skill

Expert guidance on UI/UX design, design systems, accessibility (WCAG 2.2), user research, and creating inclusive, user-centered interfaces with 2025 best practices

frankxai-agentic-creator-os Bundle

Turn an astrophysics/space-science arXiv paper into a structured brief tuned for space audiences — adds object/mission context, instruments, and observational caveats. Use when summarizing an astro-ph paper, a space-science result, or a mission's published findings.

jamie-bitflight Bundle

Enforce anti-AI UI design rules based on the Uncodixfy methodology. Use when generating HTML, CSS, React, Vue, Svelte, or any frontend UI code. Prevents generic AI aesthetic — soft gradients, glassmorphism, hero sections in dashboards, oversized rounded corners, and decorative copy. Applies constraints from Linear/Raycast/Stripe/GitHub design philosophy for functional, honest, human-designed interfaces. Triggers on UI generation, dashboard building, component creation, CSS styling, landing page design, or any task producing visual interface code.

stevenke1981 Skill

當使用者需要「前端開發工程師」處理工程研發相關任務時啟動。本 Agent 會先確認目標、資料來源、限制與驗收標準，再把需求轉成可實作、可測試、可回滾的工程方案，並輸出證據、風險、下一步與需要人工覆核的事項。

liqiongyu Bundle

Stand up a Design Engineering practice: charter, prototype-to-production workflow, component delivery plan.

human-avatar Skill

A fast, comprehensive ethics report on any decision, action, or situation — runs all five ethical frameworks in a single pass. Lighter than ethics-council (no peer review, no HTML report), heavier than ethics-impact-scan. Triggers: 'ethics check', 'quick ethics review', 'full ethics report', 'check this ethically', 'run an ethics check', any request for a complete ethical assessment without full council process.

jamie-bitflight Skill

Use when building terminal UI apps with the Textual framework — creating widgets, screens, layouts, handling events, managing reactive attributes, testing with Pilot, snapshot testing with pytest-textual-snapshot, or running background workers. Covers App lifecycle, CSS styling, screen stack, custom messages, actions, bindings, and the Worker API.

harshahosur81 Skill

You are a frontend security specialist focusing on Cross-Site Scripting (XSS) vulnerability detection and prevention. Analyze React, Vue, Angular, and vanilla JavaScript code to identify injection poi

jamie-bitflight Skill

Summarize web content by fetching URLs, extracting key passages with quote-grounding, and producing structured output. Activates on summarize this URL, what does this page say, summarize this article, read and summarize, summarize the documentation at, tl;dr this link, give me the highlights of this page, what's important on this site. Routes to fetching strategy based on content type — documentation, articles, API references, READMEs. Reports partial accessibility explicitly.

harshahosur81 Skill

Expert UX/UI auditor for apps. Reviews user experience, accessibility, cross-platform design, and interaction patterns with measurable standards.

jackspace Bundle

Guide to building static websites with the Hugo static site generator: blogs, documentation sites, landing pages and portfolios. Covers scaffolding new sites, choosing Hugo Extended over Standard, hugo.yaml and hugo.toml configuration, themes such as PaperMod via Git submodules or Hugo Modules, Go templates and Goldmark, Tailwind CSS v4 through Hugo Pipes and PostCSS, headless CMS integration with Sveltia CMS or TinaCMS, multilingual sites, GitHub Actions CI/CD, and deployment to Cloudflare Workers Static Assets or Pages with wrangler. Documents 15 pitfalls: Hugo version mismatch, baseURL errors, theme not found, YAML versus TOML frontmatter, and date-related build failures. Use when creating, styling, adding a CMS to, deploying or troubleshooting a Hugo site.

jackspace Bundle

Production-ready setup for Motion (formerly Framer Motion), the React animation library for declarative animations, gesture controls (drag, hover, tap, pan), scroll-linked and viewport- triggered effects, spring physics, layout and shared element transitions, AnimatePresence exit animations, and SVG path morphing. Covers bundle optimization with LazyMotion and useAnimate mini, tested on React 19, Next.js 15, Vite 6, and Tailwind v4. Use when building drag-and-drop interfaces, scroll-triggered reveals or parallax hero sections, modal dialogs and carousels with momentum, page and route transitions, orchestrated staggered sequences, or accordions needing fine-grained control. For simple list add/remove/sort transitions, the auto-animate skill is far smaller and preferred.

jackspace Bundle

Vercel KV, the Redis-compatible key-value store powered by Upstash, in Next.js and other Vercel applications. Covers @vercel/kv setup and environment variables (KV_REST_API_URL, KV_REST_API_TOKEN), key and JSON value operations, TTL and expiration, caching patterns for pages, APIs, and data, session and auth token storage, rate limiting, TypeScript usage from the edge runtime, serverless functions, and Server Actions, plus migrating from Cloudflare KV. Use when adding Vercel KV to an app, building a cache or rate limiter, storing sessions or temporary data with a TTL, choosing strongly consistent Redis-compatible storage over eventually consistent alternatives, or debugging KV_REST_API_URL not set, rate limit exceeded, or JSON serialization errors.

jackspace Bundle

This skill provides comprehensive knowledge for working with the Anthropic Messages API (Claude API). It should be used when integrating Claude models into applications, implementing streaming responses, enabling prompt caching for cost savings, adding tool use (function calling), processing images with vision capabilities, or using extended thinking mode. Use when building chatbots, AI assistants, content generation tools, or any application requiring Claude's language understanding. Covers both server-side implementations (Node.js, Cloudflare Workers, Next.js) and direct API access. Keywords: claude api, anthropic api, messages api, @anthropic-ai/sdk, claude streaming, prompt caching, tool use, vision, extended thinking, claude 3.5 sonnet, claude 3.7 sonnet, claude sonnet 4, function calling, SSE, rate limits, 429 errors

jackspace Bundle

Integrates Clerk authentication in React/Vite, Next.js App Router, and Cloudflare Workers apps. Covers ClerkProvider setup, clerkMiddleware and createRouteMatcher for protected routes, token verification with @clerk/backend verifyToken, custom JWT templates and session claims (user.public_metadata, org_id, org_role) for RBAC, Hono integration via @hono/clerk-auth, shadcn/ui auth components, and Playwright E2E testing with @clerk/testing, +clerk_test emails and the 424242 OTP. Documents 11 pitfalls: Missing Clerk Secret Key, JWKS cache races, missing authorizedParties CSRF risk, Core 2 import path changes, JWT size limits, ClerkProvider cannot be used as a JSX component, async auth() confusion, and Vite dev 431 header errors. Use when adding Clerk to a project, protecting routes, verifying tokens, shaping JWT claims, testing auth flows, or debugging Clerk authentication errors.