Agent skills

Claude skills marketplace: agent skills for Claude Code, Codex, Cursor and Copilot

151 skills from 50 GitHub repos, 135 of them from the company behind the tool (Anthropic, OpenAI, Vercel, Supabase, Stripe, Cloudflare...). Each one has its own page with what the SKILL.md contains and the install command for Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI and more. Every SKILL.md read at the source on 2026-11-07; repo stars as of 2026-10-24.

What are Claude skills (agent skills)?

A skill is a folder with a SKILL.md file: a name, a description that says when to use it, and instructions. It can also carry scripts, reference docs and templates. The agent reads only the name and description at startup and loads the full instructions when a task matches, so you can keep dozens installed at little context cost.

Anthropic introduced skills for Claude on October 16, 2025 and published the format as an open standard on December 18, 2025. Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode and Windsurf read the same folders, so a "Claude skill" is also a Codex skill and a Cursor skill. Required frontmatter: name (up to 64 lowercase letters, digits and hyphens, matching the folder) and description (up to 1,024 characters).

Sources: Agent Skills specification · Claude Code skills docs · Agent Skills in the Claude API · Anthropic's announcement

release-notes/SKILL.md

---
name: release-notes
description: Writes release notes from merged pull requests. Use when the user asks for a changelog or release notes.
---

# Release notes

1. List PRs merged since the last tag: gh pr list --state merged ...
2. Group them by Features, Fixes, Internal.
3. Write one line per PR in plain words, with the PR number.

Best Claude skills to start with

12

Our picks for most developers, and why. Numbers are from each SKILL.md and its repo.

  1. The most asked-for Claude skill. It pushes Claude away from the default look of AI-made UIs: pick an aesthetic direction, ground it in the subject, then critique the result.

    1,477 words · 1 bundled files · repo ★ 184k

  2. Anthropic's skill for writing your own skills: interviews you, drafts the SKILL.md, then runs test prompts with and without the skill and grades the results.

    4,848 words · 17 bundled files · repo ★ 184k

  3. Creates and edits real Word files, tracked changes and comments included, with Python scripts for the hard parts. Its siblings xlsx, pptx and pdf cover the rest of Office.

    692 words · 60 bundled files · repo ★ 184k

  4. 4. Systematic DebuggingJesse Vincent (obra)

    Find the root cause before changing code. From Superpowers, the most-starred skill collection in this directory.

    1,300 words · 5 bundled files · repo ★ 305k

  5. 5. BrainstormingJesse Vincent (obra)

    Before any new work, it checks what is actually known, asks, plays the idea back and writes a design, so the agent builds what you meant.

    2,620 words · 7 bundled files · repo ★ 305k

  6. Tests a local web app with Playwright: start the server, click through, read the console, take screenshots.

    281 words · 5 bundled files · repo ★ 184k

  7. Vercel's React and Next.js performance rules, split into many small rule files the agent reads only when they apply.

    891 words · 75 bundled files · repo ★ 33k

  8. Supabase's Postgres rules for queries, indexes, RLS and schema design, one reference file per rule.

    237 words · 35 bundled files · repo ★ 2.9k

  9. From the shadcn/ui repo itself: add and compose components the way the project intends.

    2,229 words · 20 bundled files · repo ★ 126k

  10. Builds an MCP server step by step, with Anthropic's guidance on tool design and an evaluation pass.

    1,288 words · 10 bundled files · repo ★ 184k

  11. 11. Playwright CLIMicrosoft (Playwright)

    Microsoft's skill for driving a browser and writing Playwright tests, with references for request mocking, sessions and test generation.

    571 words · 10 bundled files · repo ★ 15k

  12. OpenAI's security review skill, with one reference file per stack (Python, JavaScript/TypeScript, Go). Works in Claude Code too.

    1,378 words · 12 bundled files · repo ★ 28k

How to install skills in each agent

Example: Anthropic's frontend-design skill. Every skill page has the same steps filled in for that skill.

Claude Code

docs

Folders: ~/.claude/skills/<name>/SKILL.md (all projects), .claude/skills/ (this repo), or inside a plugin

/plugin marketplace add anthropics/skills
/plugin install example-skills@anthropic-agent-skills

# or one skill:
npx skills add anthropics/skills --skill frontend-design -a claude-code

Claude loads a skill when its description matches the task, or you type /skill-name. New skills show up without a restart.

Claude.ai and Claude Desktop

docs

Folders: Uploaded to your account (Customize > Skills)

# zip the skill folder, then Customize > Skills > + > Upload a skill
zip -r frontend-design.zip frontend-design

Needs code execution on (Settings > Capabilities). Team and Enterprise admins enable skills for the organization first.

OpenAI Codex

docs

Folders: .agents/skills in the repo, ~/.agents/skills, /etc/codex/skills

$skill-installer linear

# any repo:
npx skills add anthropics/skills --skill frontend-design -a codex

Type $ to mention a skill or run /skills; Codex also picks one when the task matches. Restart Codex if a new skill doesn't appear.

Cursor

docs

Folders: .agents/skills, .cursor/skills, ~/.cursor/skills (also reads .claude/skills and .codex/skills)

npx skills add anthropics/skills --skill frontend-design -a cursor

The agent picks skills on its own, or type / in Agent chat. Cursor imports skills from GitHub only as part of a plugin, so loose skills are copied in.

GitHub Copilot

docs

Folders: .github/skills, .agents/skills, ~/.copilot/skills

gh skill install anthropics/skills frontend-design

Works in VS Code, the Copilot CLI and the cloud agent. gh skill needs GitHub CLI 2.90+ (preview).

Gemini CLI

docs

Folders: ~/.gemini/skills (user), .agents/skills (workspace)

gemini skills install https://github.com/anthropics/skills.git --path skills/frontend-design

--scope workspace installs for one project; /skills reload picks up changes.

OpenCode, Windsurf and 40+ more

docs

Folders: OpenCode: .opencode/skills, ~/.config/opencode/skills. Windsurf: .windsurf/skills, ~/.codeium/windsurf/skills

npx skills add anthropics/skills --skill frontend-design -a opencode -a windsurf

The skills CLI (vercel-labs/skills) knows each agent's folder. Add -g to install for all projects. Needs Node.js 22.20+.

Categories

14

All Claude and agent skills

151

Official publishers first, then by the stars of the repo the skill lives in.

151 of 151 skills

Skill collections

50 repos

Install a whole collection with npx skills add owner/repo (it asks which skills and agents). Repos marked plugin marketplace also install in Claude Code with /plugin marketplace add.

  • A software development methodology packaged as skills: brainstorming, planning, TDD, debugging, subagents and code review.

    community · Jesse Vincent (obra) · pushed 2026-10-23 · plugin marketplace

  • Anthropic's reference skills: Office documents and PDF, design and art, MCP building, testing and skill authoring.

    official · Anthropic · pushed 2026-10-09 · plugin marketplace

  • shadcn-ui/ui★ 126k

    The shadcn/ui component repo, which ships a skill for adding and working with shadcn components.

    official · shadcn · pushed 2026-10-24

  • Skills for Obsidian file formats: Obsidian Markdown, Bases, JSON Canvas and the Obsidian CLI. Published from the personal account of Obsidian's CEO.

    community · Steph Ango (kepano) · pushed 2026-09-15 · plugin marketplace

  • A browser automation CLI for agents, shipped with a skill that teaches agents to use it.

    official · Vercel · pushed 2026-10-23 · plugin marketplace

  • GitHub-hosted community collection of Copilot customizations, including several hundred contributed skills.

    community · GitHub (community contributions) · pushed 2026-10-23

  • Vercel's skills for React, Next.js and React Native performance, UI review and deploying to Vercel.

    official · Vercel · pushed 2026-10-14

  • OpenAI's Codex skill catalog: system skills bundled with Codex plus curated ones for GitHub, security, docs, design tools and deploys.

    official · OpenAI · pushed 2026-09-08

  • Google's large skill collection for Google Cloud, BigQuery, Ads, Analytics and identity products.

    official · Google · pushed 2026-10-23 · plugin marketplace

  • The Playwright CLI for agents, with a skill describing how to drive browsers and tests with it.

    official · Microsoft (Playwright) · pushed 2026-10-19

  • Hugging Face skills for the Hub CLI, datasets, model training, Gradio, Spaces and Transformers.js.

    official · Hugging Face · pushed 2026-10-23 · plugin marketplace

  • Trail of Bits' security auditing skills: static analysis, Semgrep and CodeQL, diff review, crypto and smart contract checks.

    official · Trail of Bits · pushed 2026-10-24 · plugin marketplace

  • .NET team skills for C#, MSBuild, testing, diagnostics, upgrades, MAUI and Blazor.

    official · Microsoft (.NET) · pushed 2026-10-24 · plugin marketplace

  • Remotion's skills for making and rendering videos with React.

    official · Remotion · pushed 2026-10-22

  • Google's skills for coding against the Gemini API and Gemini Live API.

    official · Google (Gemini) · pushed 2026-10-13 · plugin marketplace

  • Browserbase's skills for cloud browser automation, fetching pages and UI testing.

    official · Browserbase · pushed 2026-09-29 · plugin marketplace

  • Cloudflare's skills for Workers, Wrangler, Agents SDK, Durable Objects, Next.js hosting and web performance.

    official · Cloudflare · pushed 2026-10-19 · plugin marketplace

  • Expo's skills for building, upgrading, updating and shipping Expo and React Native apps.

    official · Expo · pushed 2026-10-24 · plugin marketplace

  • Supabase's skills for its platform and for Postgres best practices.

    official · Supabase · pushed 2026-10-02 · plugin marketplace

  • Apify's skills for building Actors, generating schemas and scraping with Apify.

    official · Apify · pushed 2026-10-19 · plugin marketplace

  • Figma's guide and skills for its MCP server: reading designs into code and writing designs back into Figma.

    official · Figma · pushed 2026-10-20

  • stripe/ai★ 2k

    Stripe's AI tooling monorepo; its skills cover integration best practices, docs lookup, upgrades and Connect, mirrored per agent.

    official · Stripe · pushed 2026-10-24 · plugin marketplace

  • Callstack's React Native skills: performance, upgrades, brownfield migration, navigation and CI.

    community · Callstack · pushed 2026-10-08 · plugin marketplace

  • Microsoft's Azure skills for preparing, deploying, diagnosing and costing apps on Azure, AKS and Foundry.

    official · Microsoft (Azure) · pushed 2026-10-23 · plugin marketplace

  • LangChain's skills for LangChain, LangGraph and Deep Agents in Python and TypeScript.

    official · LangChain · pushed 2026-10-21 · plugin marketplace

  • Skills Sentry's own engineers use: commits, PR writing, bug finding, security and code review.

    official · Sentry · pushed 2026-10-23 · plugin marketplace

  • HashiCorp's skills for Terraform (style, tests, providers, stacks) and Packer image builds.

    official · HashiCorp · pushed 2026-10-05 · plugin marketplace

  • Shopify's AI toolkit; one current skill covers all Shopify developer surfaces, with older per-API skills marked deprecated.

    official · Shopify · pushed 2026-10-22 · plugin marketplace

  • Docker's skills for Dockerfiles, Compose, Docker sandboxes and agent deployment.

    official · Docker · pushed 2026-10-23 · plugin marketplace

  • n8n's skills for building workflows: expressions, code nodes, AI nodes, error handling and debugging.

    official · n8n · pushed 2026-10-17 · plugin marketplace

  • ElevenLabs' skills for speech synthesis, transcription, voice agents, music and sound effects.

    official · ElevenLabs · pushed 2026-10-24

  • Firebase's skills for the CLI, Firestore, auth, hosting, Crashlytics and security rules.

    official · Firebase (Google) · pushed 2026-10-20 · plugin marketplace

  • Railway's single skill for provisioning and deploying on Railway.

    official · Railway · pushed 2026-10-15 · plugin marketplace

  • Svelte's AI tooling with skills for writing Svelte 5 code, packaged for several agents.

    official · Svelte · pushed 2026-10-23 · plugin marketplace

  • OpenRouter's skills for its SDKs, model catalog, analytics, images, audio and agent building.

    official · OpenRouter · pushed 2026-10-24 · plugin marketplace

  • Grafana Labs' skills for dashboards, PromQL, Loki, Tempo, k6 load tests and Grafana Cloud.

    official · Grafana Labs · pushed 2026-10-24 · plugin marketplace

  • Sentry's skills for setting up the Sentry SDK, instrumenting apps and debugging Sentry issues.

    official · Sentry · pushed 2026-10-23

  • Better Auth's skills for configuring and scaffolding authentication in TypeScript apps.

    official · Better Auth · pushed 2026-10-19 · plugin marketplace

  • Notion's cookbook repo; includes skills for Notion MCP clients plus skills bundled in app and worker templates.

    official · Notion · pushed 2026-10-24

  • Resend's skills for sending email, React Email templates, the Resend CLI and deliverability.

    official · Resend · pushed 2026-10-17 · plugin marketplace

  • Sanity's skills for content modeling, GROQ, Portable Text, Studio upgrades and migrations.

    official · Sanity · pushed 2026-10-23 · plugin marketplace

  • MongoDB's skills for schema design, query tuning, connections, search and Atlas features.

    official · MongoDB · pushed 2026-10-23 · plugin marketplace

  • Firecrawl's skills for web search, scraping, crawling and research workflows via its CLI.

    official · Firecrawl · pushed 2026-10-22 · plugin marketplace

  • Neon's skills for serverless Postgres: connections, branching, auth and cost control.

    official · Neon · pushed 2026-10-23 · plugin marketplace

  • Clerk's skills for adding Clerk auth across web and mobile frameworks, webhooks, orgs and billing.

    official · Clerk · pushed 2026-10-23 · plugin marketplace

  • Prisma's skills for the Prisma CLI, Client API, Postgres setup and version upgrades.

    official · Prisma · pushed 2026-10-22

  • PostHog's skills for installing analytics, feature flags, error tracking, logs and LLM analytics per framework, plus internal team skills.

    official · PostHog · pushed 2026-10-24 · plugin marketplace

  • Convex's skills for building, deploying, migrating and operating apps on the Convex backend.

    official · Convex · pushed 2026-10-13

  • Auth0's single skill for adding and configuring Auth0 authentication.

    official · Auth0 (Okta) · pushed 2026-10-23 · plugin marketplace

  • Upstash's skills for its Redis, QStash, rate limiting, vector, search and workflow SDKs.

    official · Upstash · pushed 2026-10-22 · plugin marketplace

Skills give know-how; MCP servers give tools (see MCP servers by app). More: AI coding agents compared · vibe coding tools.

Claude Code guides

FAQ

What are Claude skills?+

Claude skills (Anthropic calls them Agent Skills) are folders with a SKILL.md file: a name, a description of when to use it, and instructions, plus optional scripts and reference files. Claude reads only the name and description up front and loads the rest when a task needs it, so you can install many skills without filling the context window. Anthropic announced skills on October 16, 2025 and published the format as an open standard (agentskills.io) on December 18, 2025.

Is there an official Claude skills marketplace?+

Anthropic's own skills live in the anthropics/skills GitHub repo, which is also a Claude Code plugin marketplace: /plugin marketplace add anthropics/skills, then install a plugin such as document-skills. Other publishers ship their own repos (38 of the 50 repos here are plugin marketplaces). This page is a directory across all of them, with install steps for each agent.

Do Claude skills work in Codex, Cursor and Copilot?+

Yes. Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode, Windsurf and many other agents read the same SKILL.md format. Only some frontmatter fields are Claude Code extensions (such as context: fork or hooks); other agents may ignore them. Each skill page says if a skill uses one.

How do I install a skill?+

With the cross-agent skills CLI: npx skills add owner/repo --skill name (add -a claude-code, -a codex, -a cursor... to pick the agent, -g for all projects). Or copy the skill folder into your agent's skills folder: ~/.claude/skills for Claude Code, .agents/skills for Codex and Cursor, .github/skills or ~/.copilot/skills for Copilot. Each skill page has the exact command per agent.

What are the best Claude skills?+

Start with frontend-design, skill-creator, docx, systematic-debugging, brainstorming, webapp-testing. The list above says why for each. For a specific tool, take the skill from its publisher (Supabase, Stripe, Vercel, Cloudflare...): those are marked official.

Agent skills vs MCP servers: what is the difference?+

An MCP server gives the agent new tools, such as access to Jira or a database, through a running process or a URL. A skill gives it know-how: how to do a task well with what it already has (write a .docx, follow a framework's best practices, debug step by step). They work together: some vendors ship a skill that teaches the agent to use their MCP server.

Are agent skills safe?+

A skill can include scripts the agent runs, so treat it like code: read the SKILL.md and any scripts first, prefer official publishers, and keep approval prompts on. GitHub's gh skill and the skills CLI both warn that skills are not verified.

Where does this list come from?+

Picked by hand from the publishers' own GitHub repos. Every SKILL.md is read at its source on each refresh (last 2026-11-07), with stars and last push from the GitHub API. Community repos need 300+ stars and a push in the last year. Summaries are ours; the quoted descriptions are the publishers'.