Codex skills, plugins, subagents, slash commands and mcp servers

ponytail-help DietrichGebert skill Shows a quick reference card for ponytail levels, skills, and configuration inside the chat. Useful when you need command triggers without leaving your editor. Claude Code Cursor GitHub Copilot 42,300installs ponytail-debt DietrichGebert skill Turns every deliberate ponytail shortcut into one debt ledger: file, line, the ceiling the comment names, and the trigger for revisiting it. Claude Code Cursor GitHub Copilot 42,200installs obsidian-cli kepano skill A skill for working with Obsidian vaults from the command line: read and create notes, search, edit properties, debug plugins and themes. Claude Code Cursor GitHub Copilot 80,800installs ponytail-gain DietrichGebert skill Displays measured benchmark savings across code volume, token spend, and execution time for Ponytail. Useful when evaluating the toolset. Claude Code Cursor GitHub Copilot 40,300installs seo-audit coreyhaines31 skill Diagnoses technical SEO issues, indexing drops, and metadata errors. Identifies why your site is losing organic search rankings in Google. Claude Code Cursor GitHub Copilot 236,800installs last30days mvanhorn skill Pulls posts and engagement on any topic from the last 30 days across Reddit, X, YouTube, TikTok, Hacker News, Polymarket, GitHub and the web. Useful when you want what people actually said, not what a blog summarized. Claude Code Cursor GitHub Copilot 52,400installs migrate-radix-to-base shadcn-ui skill Migrates React components and full projects from Radix UI to Base UI (@base-ui/react). Useful when switching the underlying primitives in shadcn/ui projects. Claude Code Cursor GitHub Copilot 30,100installs hallmark Nutlope skill Enforces strict frontend design constraints to stop coding assistants from producing generic, AI-looking web pages. Claude Code Cursor GitHub Copilot 69,100installs security-audit cloudflare skill Reviews codebases and APIs for vulnerabilities using safe sandboxing. Fits pre-release security reviews, pen-test triage, and architecture checks. Claude Code Cursor GitHub Copilot 52,200installs vercel-cli-with-tokens vercel skill Lets your agent drive the Vercel CLI with an access token instead of an interactive login: find the token, link the project, ship a preview, edit env vars. Claude Code Cursor GitHub Copilot 135,200installs ask-sonner emilkowalski skill A guide skill for Sonner, the React toast library: mount the Toaster, pick the right toast() call, style it, fix what breaks. Claude Code Cursor GitHub Copilot 138,600installs design-system claudekit skill This skill builds design tokens, component specs, and presentation slides. Use it when an interface and its slides need to follow one visual system. Claude Code Cursor GitHub Copilot 42,200installs remotion-best-practices remotion-dev skill Routes Remotion tasks to focused guidance for video creation, React markup, maps, multimedia, previews, and rendering. Claude Code Cursor GitHub Copilot 678,800installs animate-expo emilkowalski skill Builds React Native and Expo animations using Reanimated and Gesture Handler. Helps keep motion on the UI thread and avoid dropped frames on physical devices. Claude Code Cursor GitHub Copilot 135,900installs design claudekit skill Generates logos, brand identity assets, design tokens, Chart.js HTML slides, and multi-platform banners using Python scripts and AI providers. Claude Code Cursor GitHub Copilot 40,800installs ui-styling claudekit skill A skill that helps your agent build accessible interfaces with shadcn/ui and Tailwind CSS: components, themes, dark mode, responsive layouts and canvas design. Claude Code Cursor GitHub Copilot 40,200installs brand claudekit skill Keeps brand voice, visual rules and design tokens in one markdown file, then feeds them to your agent's prompts and to your CSS variables. Claude Code Cursor GitHub Copilot 39,500installs banner-design claudekit skill Generates banners for social media, ads, and web hero sections using HTML/CSS. Useful when you need fast visual creative assets directly in your coding agent. Claude Code Cursor GitHub Copilot 39,000installs slides claudekit skill Builds strategic HTML presentations using Chart.js and design tokens. Useful for generating pitch decks and marketing slides directly from the agent. Claude Code Cursor GitHub Copilot 38,400installs write-swift emilkowalski skill This skill guides Swift coding, reviews, and migrations using the language’s current practices. Use it to investigate concurrency errors, hangs, data races, or retain cycles. Claude Code Cursor GitHub Copilot 117,500installs vercel-optimize vercel-labs skill A skill that audits Vercel spend and speed: it gathers usage and route metrics first, then recommends code and config changes. Claude Code Cursor GitHub Copilot 110,000installs code-review-and-quality addyosmani skill Five review axes and a limit on diff size, so an agent checks a change before merge instead of after. Claude Code Cursor GitHub Copilot 72,500installs writing-guidelines vercel skill A skill that reviews docs and prose against a written style guide. You get findings with line numbers instead of hunting through the file yourself. Claude Code Cursor GitHub Copilot 105,900installs security-and-hardening addyosmani skill Guides threat modeling and security checks for code that handles user input, authentication, sessions, or external services. Use it when building a feature that accepts untrusted data or reviewing code before release. Claude Code Cursor GitHub Copilot 69,400installs marketing-psychology coreyhaines31 skill Applies behavioral science and mental models to marketing decisions. It helps teams analyze buyer motivations and solve funnel bottlenecks. Claude Code Cursor GitHub Copilot 164,000installs content-strategy coreyhaines31 skill Plans content roadmaps, selects blog topics, and balances searchable search-intent pieces with shareable formats. Use it when deciding what to write next to bring in leads. Claude Code Cursor GitHub Copilot 163,400installs frontend-ui-engineering addyosmani skill Enforces production standards for component architecture, WCAG 2.1 AA accessibility, and design systems. Stops AI models from defaulting to purple buttons, heavy shadows, and arbitrary spacing. Claude Code Cursor GitHub Copilot 66,600installs i-have-adhd ayghri skill Reshapes agent replies so the next action comes first. Turn it on with /i-have-adhd, off with "stop adhd mode". Claude Code Cursor GitHub Copilot 29,200installs performance-optimization addyosmani skill An agent skill that measures before it changes code: Core Web Vitals budgets, N+1 queries, missing indexes and slow endpoints. Claude Code Cursor GitHub Copilot 64,500installs spec-driven-development addyosmani skill Enforces writing a structured specification before coding. Useful when starting new features, tackling vague requirements, or making architectural decisions. Claude Code Cursor GitHub Copilot 64,300installs supabase official supabase skill Guides the agent through database configuration and strict RLS policies in Supabase. GP ChatGPT 8installs planning-and-task-breakdown addyosmani skill Breaks specifications into small, testable tasks with clear acceptance criteria. Prevents agents from jumping straight into coding before dependencies and risks are mapped. Claude Code Cursor GitHub Copilot 63,600installs ai-seo coreyhaines31 skill Use this skill to work on content visibility in AI search and investigate why AI-generated answers cite—or miss—your brand. Claude Code Cursor GitHub Copilot 150,100installs documentation-and-adrs addyosmani skill Captures architectural decisions (ADRs) and the context behind code changes. Useful for tracking design choices, API updates, and trade-offs. Claude Code Cursor GitHub Copilot 63,200installs copy-editing coreyhaines31 skill This skill edits existing marketing copy while preserving its core message and the author's voice. Use it to proofread, refine a specific line, or refresh outdated content. Claude Code Cursor GitHub Copilot 148,500installs code-simplification addyosmani skill Clarifies code and removes unnecessary complexity without altering behavior. Useful when refactoring working features that feel harder to maintain than they should. Claude Code Cursor GitHub Copilot 62,200installs debugging-and-error-recovery addyosmani skill This skill guides an agent from reproducing a failure to checking the fix. Use it when tests fail, a build breaks, or runtime behavior differs from expectations. Claude Code Cursor GitHub Copilot 62,200installs api-and-interface-design addyosmani skill Guides API and module-boundary design with explicit contracts, validation, and consistent errors. Use it for REST, GraphQL, or public interfaces. Claude Code Cursor GitHub Copilot 61,900installs marketing-ideas coreyhaines31 skill This skill suggests marketing ideas for SaaS and software products based on their stage and available resources. Use it when you need a place to start with growth. Claude Code Cursor GitHub Copilot 146,400installs incremental-implementation addyosmani skill Directs agents to deliver code in thin, verified vertical slices instead of bulk edits. Fits multi-file refactoring and feature work behind flags. Claude Code Cursor GitHub Copilot 61,300installs