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The open registry for Claude Code

Claude Skills

Claude skills are reusable SKILL.md instructions that extend Claude Code with new capabilities. Install 4,400+ free Claude skills from Anthropic, Microsoft, Google, Vercel, Stripe, and the developer community — in one command, with security scanning and version control built in.

$ npx @skills-hub-ai/cli install code-review

What are Claude skills?

A Claude skill is a Markdown file with frontmatter — a SKILL.md — that tells Claude Code how to do one specific job well. Code review. Test generation. Deploying to Render. Auditing for HIPAA. Generating an API spec. The format is plain text, the standard is open, and the file is portable across every AI tool that supports the Agent Skills spec.

What makes skills different from a system prompt is conditional loading. A system prompt sits in every conversation, eating context. A skill is invoked only when its triggers match the task — so you can install hundreds of Claude skills without bloating the model's context window. Claude reads the skill, follows its instructions, and unloads it when the task is done.

What makes Claude skills different from Cursor rules, Copilot instructions, or any other tool-specific format is portability. The same SKILL.md works in Claude Code, Cursor, Codex CLI, Windsurf, Copilot, Gemini CLI, and any MCP-compatible client. Write once, run in every tool.

Best Claude skills

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The most-installed Claude skills on skills-hub.ai right now. Every skill is versioned, security-scanned, and linked to its upstream GitHub repository.

  1. 01code-review

    19 installs

    Thorough code review — checks correctness, security, performance, readability, and test coverage. Gives actionable feedback ranked by severity.

    Review
  2. 02quickstart

    13 installs

    Zero to power user in one invoke — detects OS, installs Homebrew/apt/Node.js/Python, sets up Claude Code, authenticates skills-hub CLI, connects MCP servers, and installs recommended skills based on your project. Cross-platform (macOS, Linux, WSL). Idempotent. Use when: 'quickstart', 'setup machine', 'new machine setup', 'install everything', 'get started', 'onboard me', 'setup skills-hub', 'fresh install'.

    Productivity
  3. 03ui-design-system

    12 installs

    UI design system toolkit for Senior UI Designer including design token generation, component documentation, responsive design calculations, and developer handoff tools. Use for creating design systems, maintaining visual consistency, and facilitating design-dev collaboration.

    Buildfrom Multi-Domain Skills
  4. 04marketing-strategy-pmm

    8 installs

    Product marketing skill for positioning, GTM strategy, competitive intelligence, and product launches. Use when the user asks about product positioning, go-to-market planning, competitive analysis, target audience definition, ICP definition, market research, launch plans, or sales enablement. Covers April Dunford positioning, ICP definition, competitive battlecards, launch playbooks, and international market entry. Produces deliverables including positioning statements, battlecard documents, launch plans, and go-to-market strategies.

    Marketingfrom Multi-Domain Skills
  5. 05Ralph Wiggum Ship It

    6 installs

    Stop overthinking. Ship the thing. The Ralph Wiggum approach to software delivery: naive boldness backed by the confidence that you can fix anything after it lands. For when your inner perfectionist needs to sit down.

    Build
  6. 06seo-audit

    6 installs

    When the user wants to audit, review, or diagnose SEO issues on their site. Also use when the user mentions "SEO audit," "technical SEO," "why am I not ranking," "SEO issues," "on-page SEO," "meta tags review," or "SEO health check." For building pages at scale to target keywords, see programmatic-seo. For adding structured data, see schema-markup.

    Marketingfrom Multi-Domain Skills
  7. 07swot-analysis

    5 installs

    Perform a detailed SWOT analysis — strengths, weaknesses, opportunities, and threats with actionable recommendations. Use when doing strategic assessment, competitive analysis, or evaluating a product or business position.

    Productfrom Product Management Skills
  8. 08senior-frontend

    5 installs

    Frontend development skill for React, Next.js, TypeScript, and Tailwind CSS applications. Use when building React components, optimizing Next.js performance, analyzing bundle sizes, scaffolding frontend projects, implementing accessibility, or reviewing frontend code quality.

    Buildfrom Multi-Domain Skills
  9. 09security-review

    4 installs

    Security audit and vulnerability assessment for any codebase. Scans for authentication bypasses, missing auth middleware, broken JWT validation (algorithm confusion, weak secrets, missing expiry), OAuth state and PKCE flaws, IDOR and horizontal privilege escalation, vertical privilege escalation via role manipulation, SQL injection, NoSQL injection, XSS (stored, reflected, DOM), command injection, path traversal, SSRF, CSRF, hardcoded secrets and API keys (sk_live_, AKIA, ghp_), .env and credential file exposure, PII leaking in logs and error responses, overfetching sensitive fields, CORS misconfiguration, session fixation, missing secure/httpOnly/sameSite cookie flags, and Firebase/Firestore rule weaknesses. Produces a severity-ranked findings report with exploit scenarios and fix recommendations. Covers OWASP Top 10.

    Reviewfrom Skills Hub
  10. 10launch-strategy

    4 installs

    When the user wants to plan a product launch, feature announcement, or release strategy. Also use when the user mentions 'launch,' 'Product Hunt,' 'feature release,' 'announcement,' 'go-to-market,' 'beta launch,' 'early access,' 'waitlist,' 'product update,' 'GTM plan,' 'launch checklist,' or 'launch momentum.' This skill covers phased launches, channel strategy, and ongoing launch momentum.

    Buildfrom Multi-Domain Skills
  11. 11draft-nda

    4 installs

    Draft a detailed Non-Disclosure Agreement between two parties covering information types, jurisdiction, and clauses needing legal review. Use when creating confidentiality agreements or preparing an NDA for a partnership.

    Productfrom Product Management Skills
  12. 12market-research-reports

    4 installs

    Generate comprehensive market research reports (50+ pages) in the style of top consulting firms (McKinsey, BCG, Gartner). Features professional LaTeX formatting, extensive visual generation with scientific-schematics and generate-image, deep integration with research-lookup for data gathering, and multi-framework strategic analysis including Porter Five Forces, PESTLE, SWOT, TAM/SAM/SOM, and BCG Matrix.

    Researchfrom Scientific Skills
  13. 13pptx

    4 installs

    Use this skill any time a .pptx file is involved in any way — as input, output, or both. This includes: creating slide decks, pitch decks, or presentations; reading, parsing, or extracting text from any .pptx file (even if the extracted content will be used elsewhere, like in an email or summary); editing, modifying, or updating existing presentations; combining or splitting slide files; working with templates, layouts, speaker notes, or comments. Trigger whenever the user mentions "deck," "slides," "presentation," or references a .pptx filename, regardless of what they plan to do with the content afterward. If a .pptx file needs to be opened, created, or touched, use this skill.

    Creativefrom Anthropic
  14. 14grammar-check

    4 installs

    Identify grammar, logical, and flow errors in text and suggest targeted fixes without rewriting the entire text. Use when proofreading content, checking writing quality, or reviewing a draft.

    Productfrom Product Management Skills
  15. 15seo-schema

    4 installs

    Detect, validate, and generate Schema.org structured data. JSON-LD format preferred. Use when user says "schema", "structured data", "rich results", "JSON-LD", or "markup".

    Marketingfrom Claude SEO
  16. 16social-media-manager

    4 installs

    When the user wants to develop social media strategy, plan content calendars, manage community engagement, or grow their social presence across platforms. Also use when the user mentions 'social media strategy,' 'social calendar,' 'community management,' 'social media plan,' 'grow followers,' 'engagement rate,' 'social media audit,' or 'which platforms should I use.' For writing individual social posts, see social-content. For analyzing social performance data, see social-media-analyzer.

    Marketingfrom Multi-Domain Skills
  17. 17broken-links

    4 installs

    Scan a codebase for broken links — dead URLs in Markdown/HTML, broken file references, invalid import paths, stale anchor links, and broken cross-doc references — then auto-fix what it can: replace dead URLs with Wayback Machine archives, update moved file paths via git history, remove anchors that no longer exist, and flag what needs human review. Self-healing: learns fix patterns and improves over iterations. Use when: 'fix broken links', 'check links', 'dead links', 'broken urls', 'link rot', 'fix references', 'validate links', 'stale links', 'broken imports'.

    QAfrom Skills Hub
  18. 18Market Research to Launch

    4 installs

    Full product launch pipeline. Competitive analysis, positioning, landing page SEO, schema markup, social media content, and pitch deck. From idea to launched and marketed.

    Combo
  19. 19design-to-code

    4 installs

    Turn a design into production-quality frontend code: extract a design system with tokens and components, make layouts responsive across breakpoints, add dark mode with WCAG-compliant theming, then run a UX audit to validate everything. Use when implementing UI from Figma, adding theming, making an app responsive, or overhauling frontend design consistency.

    Combofrom Skills Hub
  20. 20playwright

    3 installs

    Playwright end-to-end testing best practices for web applications, covering test design, locator strategies, and assertion patterns.

    Buildfrom Mindrally Skills
  21. 21Legal Document Factory

    3 installs

    Generates and reviews a complete set of legal documents. NDAs, privacy policies, GDPR compliance, data processing agreements, and formatted legal documents ready for review.

    Combo
  22. 22value-proposition

    3 installs

    Design a detailed value proposition using a 6-part JTBD template — Who, Why, What before, How, What after, Alternatives. Use when creating a value proposition, analyzing customer value delivery, or articulating why customers should choose your product.

    Productfrom Product Management Skills
  23. 23marketing-ideas

    3 installs

    When the user needs marketing ideas, inspiration, or strategies for their SaaS or software product. Also use when the user asks for 'marketing ideas,' 'growth ideas,' 'how to market,' 'marketing strategies,' 'marketing tactics,' 'ways to promote,' or 'ideas to grow.' This skill provides 139 proven marketing approaches organized by category.

    Marketingfrom Multi-Domain Skills
  24. 24prompt-engineer-toolkit

    3 installs

    Analyzes and rewrites prompts for better AI output, creates reusable prompt templates for marketing use cases (ad copy, email campaigns, social media), and structures end-to-end AI content workflows. Use when the user wants to improve prompts for AI-assisted marketing, build prompt templates, or optimize AI content workflows. Also use when the user mentions 'prompt engineering,' 'improve my prompts,' 'AI writing quality,' 'prompt templates,' or 'AI content workflow.'

    Buildfrom Multi-Domain Skills

Claude skills by category

Browse Claude skills organized by what they do. Each category covers the most common tasks in modern AI-assisted development.

How to install Claude skills

  1. 1. Pick a skill from the catalog

    Open /browse, filter by Claude Code, sort by installs or quality, and pick a skill that matches your task. Every skill page shows a security grade, a quality score, and a link to the upstream GitHub repository.

  2. 2. Run the install command

    $ npx @skills-hub-ai/cli install code-review

    The CLI writes the SKILL.md to the right directory (.claude/skills/ for Claude Code) and adds an entry to .skills.json so your team gets the same skill at the same version.

  3. 3. Use the skill

    Open Claude Code and describe a task that matches the skill's triggers — for example, "review this PR" or "deploy to Render." Claude loads the skill on demand, follows its instructions, and unloads it when finished. No need to manage context yourself.

  4. 4. Optional: install via MCP

    If your tool supports MCP, install @skills-hub-ai/mcp and the entire registry becomes searchable as MCP prompts — no per-skill install needed.

Publish your own Claude skill

Built a great workflow in Claude Code? Publish it as a skill, get install counts and ratings, and let other developers run your work with one command. Sign in with GitHub, upload a SKILL.md, or generate one from a natural-language description.

Publish a skill →

Frequently asked questions about Claude skills

What are Claude skills?

Claude skills are reusable instruction files (SKILL.md) that extend Claude Code with specialized capabilities like code review, testing, deployment, security scanning, or documentation. Claude loads a skill on demand when its trigger conditions match the task at hand, so your context window stays focused on the work, not the boilerplate. Skills follow the open Agent Skills standard and work in Claude Code, Cursor, Codex CLI, Windsurf, Copilot, and any MCP-compatible tool.

How do I install a Claude skill?

Run `npx @skills-hub-ai/cli install <skill-slug>` in your project. The CLI writes the SKILL.md file to the right directory for Claude Code (`.claude/skills/`), Cursor, Codex CLI, or any other supported tool, and adds an entry to your `.skills.json` lockfile so your team gets the same skills at the same versions. No API key required.

Where can I find the best Claude skills?

skills-hub.ai indexes 4,400+ Claude skills from 90+ official sources — Anthropic, Microsoft, Google, Vercel, Stripe, Cloudflare, Trail of Bits, Prisma, Supabase, OpenAI, Hugging Face, and more — plus community contributions. Every skill is versioned, security-scanned with an A–F grade, and linked to its upstream GitHub repository.

Are Claude skills free?

Yes. Every skill on skills-hub.ai is free to install and use. The open Agent Skills standard is built on plain Markdown, so skills are portable and you keep ownership of any skills you publish.

How are Claude skills different from system prompts or Cursor rules?

A system prompt is loaded into every Claude conversation by default. A Claude skill is loaded only when its trigger conditions match — so you can have hundreds of skills installed without bloating your context window. Compared to Cursor rules (Cursor-specific, .cursorrules files), skills are tool-agnostic: the same SKILL.md works in Claude Code, Cursor, Codex, Windsurf, Copilot, and MCP tools.

Can I publish my own Claude skill?

Yes. Sign in with GitHub, click Publish, and either upload your existing SKILL.md or generate one from a natural-language description. Once published your skill is searchable, installable in one command, and tracked with install counts, ratings, and a quality score.

Is SKILL.md an official Anthropic format?

Anthropic introduced the Agent Skills standard in late 2025 and publishes its own skills openly at github.com/anthropics/skills. The format has been adopted by 26+ AI tools and platforms. skills-hub.ai mirrors Anthropic's official skills daily and indexes skills from 90+ other companies and community publishers, all conforming to the same standard.

How does skill composition work?

Composition lets you chain multiple Claude skills into a single workflow with dependency ordering and parallel execution — for example, lint → test → security-scan → build. Each skill declares its expected inputs and outputs as structured metadata so the chain is validated before it runs. skills-hub.ai is the only Claude-skills platform that supports composition natively.