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

test-driven-development addyosmani skill This skill guides work through red-green-refactor: write a failing test, add the smallest passing code, then refactor. Use it for logic, bugs, and behavior changes. Claude Code Cursor GitHub Copilot 61,300installs context-engineering addyosmani skill Helps you set up agent context: which rules, specs and files to feed the agent, and when. Use it at the start of a session, when output quality drops, or when switching tasks. Claude Code Cursor GitHub Copilot 60,900installs ai-sdk vercel skill Teaches your coding agent to use the Vercel AI SDK accurately. It forces the model to read installed package docs instead of relying on memory. Claude Code Cursor GitHub Copilot 66,000installs git-workflow-and-versioning addyosmani skill A skill that sets git discipline for coding agents: atomic commits, short-lived branches, worktrees for parallel work. Useful when the agent commits faster than you review. Claude Code Cursor GitHub Copilot 58,900installs idea-refine addyosmani skill Turns raw concepts into sharp, actionable plans through structured divergence and stress-testing. Creates a concise MVP one-pager. Claude Code Cursor GitHub Copilot 58,600installs summarize openclaw skill Runs a CLI tool to summarize or transcribe web articles, YouTube videos, podcasts, and local PDF documents directly within your AI assistant. Claude Code Cursor GitHub Copilot 26,900installs using-agent-skills addyosmani skill A meta-skill that tells the agent which skill from the agent-skills collection fits the task in front of it, and which behaviour rules apply all the time. Claude Code Cursor GitHub Copilot 58,500installs gws-gmail official googleworkspace skill This skill hands your agent Gmail: send mail, read the inbox, reply in a thread. Useful when email work already runs through the gws CLI. Claude Code Cursor GitHub Copilot 81,900installs browser-testing-with-devtools addyosmani skill Connects your coding agent to Chrome via DevTools MCP. Helps inspect the live DOM, catch console errors, check network payloads, and visually verify UI fixes. Claude Code Cursor GitHub Copilot 57,900installs shipping-and-launch addyosmani skill Walks your agent through a production launch: pre-launch checklist, monitoring, staged rollout and a rollback plan. Useful when a feature reaches real users. Claude Code Cursor GitHub Copilot 57,800installs source-driven-development addyosmani skill Grounds agent coding decisions in official documentation. It helps verify framework APIs against detected versions and avoids outdated patterns from model training data. Claude Code Cursor GitHub Copilot 57,600installs ci-cd-and-automation addyosmani skill Builds a GitHub Actions CI/CD pipeline for a repo: lint, type check, tests, build and dependency audit chained as gates on every pull request. Claude Code Cursor GitHub Copilot 57,500installs deprecation-and-migration addyosmani skill Guides the retirement of old systems, APIs, and features and moves users to a replacement. It also covers production database migrations without downtime. Claude Code Cursor GitHub Copilot 56,800installs interview-me addyosmani skill Conducts a one-question-at-a-time interview to extract actual project intent before any code or specs. Useful when a task is underspecified. Claude Code Cursor GitHub Copilot 56,700installs planning-with-files OthmanAdi skill Keeps task plans and progress in local Markdown files. Useful for agent tasks and research requiring five or more tool calls. Claude Code Cursor GitHub Copilot 46,900installs ad-creative coreyhaines31 skill Generates and scales ad copy across Google Ads, Meta, and LinkedIn using real performance data and verified customer reviews. Claude Code Cursor GitHub Copilot 133,600installs diagnosing-superpowers Jesse Vincent skill Investigates a failed Superpowers session through its transcripts and builds an evidence-based report. Use it when work repeats, plans are ignored, or a skill fails to fire. Claude Code 19,996installs doubt-driven-development addyosmani skill This skill sends non-trivial decisions to a fresh-context reviewer looking for flaws. Use it before changes that are hard to undo or costly to debug later. Claude Code Cursor GitHub Copilot 56,100installs observability-and-instrumentation addyosmani skill Instruments code with structured logs, RED and USE metrics, and distributed tracing. Use it when shipping features to production so issues are diagnosable. Claude Code Cursor GitHub Copilot 54,200installs mobile-native emilkowalski skill Strips the tells that give a web app away on a phone: sticky hover, tap highlight flash, the 100vh bug. Claude Code Cursor GitHub Copilot 84,500installs cold-email coreyhaines31 skill A skill that drafts cold B2B emails and follow-ups, sets up sending on secondary domains, and keeps email and LinkedIn cadences in step. Claude Code Cursor GitHub Copilot 127,200installs gws-gmail-send official googleworkspace skill A skill that teaches your agent to send Gmail from the terminal: recipients, subject, body, attachments and drafts. Claude Code Cursor GitHub Copilot 74,700installs gws-drive official googleworkspace skill This skill hands your agent Google Drive through the gws CLI: files, folders, shared drives, comments and access requests. Useful when docs move through code. Claude Code Cursor GitHub Copilot 74,500installs site-architecture coreyhaines31 skill Plans a site's page hierarchy, navigation, URL patterns and internal links. Useful before you build, or when visitors can't find their way around. Claude Code Cursor GitHub Copilot 122,300installs churn-prevention coreyhaines31 skill A Claude Code skill for subscription churn: an exit survey at cancellation, an offer matched to the stated reason, and recovery of failed payments. Claude Code Cursor GitHub Copilot 120,600installs ppt-master hugohe3 skill This skill creates and edits PPTX decks, rebuilds slide visuals, and fills native templates. Use it when an agent needs a presentation workflow rather than plain text. Claude Code Cursor GitHub Copilot 19,700installs sales-enablement coreyhaines31 skill Creates sales decks, one-pagers, demo scripts, and objection-handling documents. Use it when an agent needs sales collateral for a B2B deal. Claude Code Cursor GitHub Copilot 118,300installs next-dev-loop vercel skill Checks that an edit to your Next.js app actually works in a running app, not just that it compiles. Built for the next dev loop. Claude Code Cursor GitHub Copilot 22,000installs customer-research coreyhaines31 skill Turns interview transcripts, reviews and support tickets into pains, triggers and quotable customer language, or runs the interviews when you have nothing to analyze yet. Claude Code Cursor GitHub Copilot 114,500installs next-cache-components-adoption vercel skill This skill helps enable Cache Components in a Next.js app and work through route errors until the build passes. Use it when migrating an App Router project. Claude Code Cursor GitHub Copilot 21,200installs revops coreyhaines31 skill This skill helps design RevOps workflows for lead stages, scoring, routing, and marketing-to-sales handoffs. Use it when CRM processes need clear rules. Claude Code Cursor GitHub Copilot 113,000installs lead-magnets coreyhaines31 skill Plans lead magnets for email capture and lead generation. It matches downloadable formats to buyer stages and guides gating strategies. Claude Code Cursor GitHub Copilot 112,500installs gws-shared official googleworkspace skill This skill gives agents shared rules for gws CLI authentication, flags, and output formats. Use it when working with gws commands. Claude Code Cursor GitHub Copilot 66,000installs diagram-design cathrynlavery skill Draws 45 diagram types as self-contained HTML files with inline SVG. Useful when a picture beats a paragraph. Claude Code Cursor GitHub Copilot 18,900installs gws-calendar official googleworkspace skill Manage Google Calendar events, access rules, and schedules through the gws CLI tool. Claude Code Cursor GitHub Copilot 61,100installs next-cache-components-optimizer vercel skill Optimizes Next.js App Shell UI on hard and soft navigations. It sets up failing Playwright instant() checks and guides routes to green. Claude Code Cursor GitHub Copilot 18,700installs gws-sheets official googleworkspace skill This skill lets an agent read and edit Google Sheets through the CLI. Use it when a coding workflow needs spreadsheet data or table updates. Claude Code Cursor GitHub Copilot 58,800installs gws-docs official googleworkspace skill This skill lets an agent read and update Google Docs through gws. Use it when document changes should happen from an agent chat. Claude Code Cursor GitHub Copilot 58,300installs orca-linear stablyai skill Manages Linear issues through the Orca CLI directly from agent sessions. Useful for moving tickets between workflow states, linking pull requests, and searching issues. Claude Code Cursor GitHub Copilot 29,000installs break-ui emilkowalski skill This skill tests a UI with realistic edge-case data and reports what breaks. Use it to stress-test a component or screen during development. Claude Code Cursor GitHub Copilot 63,300installs