Playwright end-to-end testing patterns skill from everything-claude-code — page object models, fixture management, CI integration, and cross-browser test strategies.
OWASP-aligned security checklist skill from everything-claude-code — scans code for injection flaws, auth issues, sensitive data exposure, and misconfigured dependencies.
securityowaspvulnerabilities
Agents
ECC Architect Agent
System design and architectural decision-making agent from everything-claude-code — evaluates trade-offs, proposes patterns, and produces architecture decision records.
The official Anthropic skills library — battle-tested markdown workflows for common dev tasks: code review, test generation, documentation, and refactoring.
officialanthropicskills
Skills
React Component Skill
A specialized Claude Code skill for generating production-ready React components with TypeScript, accessibility best practices, and Tailwind CSS styling.
reactskillcomponents
MCP Servers
Sequential Thinking MCP
Official MCP server for structured chain-of-thought reasoning — gives Claude a scratchpad to think through complex problems step by step before answering.
chain-of-thoughtreasoningthinking
MCP Servers
MCP Servers (Official)
The official Anthropic collection of reference MCP server implementations — filesystem, git, memory, fetch, and more. The canonical starting point for MCP integration.
filesystemgitmemory
MCP Servers
Context7 MCP
MCP server by Upstash that pulls up-to-date library documentation straight into Claude context — no more hallucinated APIs, always current docs.
docscontextlibraries
Skills
Marketing Skills
Corey Haines' collection of AI agent skills for marketing professionals — conversion rate optimization, copywriting, SEO, analytics, growth engineering, and pricing strategy, all as drop-in Claude Code skills.
marketingconversioncopywriting
Skills
Claude Scientific Skills
Specialized Claude Code skills for scientific computing and data analysis — data cleaning, statistical analysis, visualization, and research paper summaries.
scientificdata-analysisstatistics
MCP Servers
Playwright MCP
Official Microsoft Playwright MCP server — give Claude full browser automation: navigate pages, click elements, fill forms, take screenshots, and scrape content.
playwrightbrowserautomation
MCP Servers
GitHub MCP Server
Official GitHub MCP server — search repos, manage issues and PRs, read files, create commits, and automate GitHub workflows directly from Claude.
githubmcpofficial
Harnesses
Serena
Autonomous coding agent using language servers for precise code navigation — Serena reads LSP symbols and references so Claude edits exactly the right code without guessing.
autonomouslspcode-navigation
Agents
Awesome Claude Code Subagents
VoltAgent's curated collection of Claude Code subagent definitions — specialized roles for QA, security, DevOps, architecture review, and code generation.
subagentsrolesqa
Harnesses
SuperClaude Framework
SuperClaude is an opinionated Claude Code configuration framework — structured personas, cognitive flags, and domain-specific modes for consistent AI behavior.
personascognitive-modesconfiguration
MCP Servers
AWS MCP Servers
Official AWS Labs collection of MCP servers — CDK infrastructure generation, Bedrock model access, AWS docs lookup, cost analysis, and more in a single monorepo.
awscdkbedrock
IDE Plugins
Claude Code Action
Official Anthropic GitHub Action — add Claude Code as a CI reviewer that comments on PRs, fixes failing tests, and implements requested changes automatically.
github-actionscipr-review
IDE Plugins
Claude Code Security Review Action
Official Anthropic GitHub Action for automated security review — Claude scans every PR for vulnerabilities, secrets exposure, and OWASP top 10 issues.
securitygithub-actionsvulnerability-scanning
MCP Servers
Notion MCP Server
Official Notion MCP server — read and write Notion pages, search your workspace, update databases, and create blocks from within Claude.
notionnotesdatabases
MCP Servers
Cloudflare MCP Server
Official Cloudflare MCP server — manage Workers, KV, R2, D1, and Durable Objects. Deploy edge functions and query your Cloudflare resources from Claude.
cloudflareworkersedge
MCP Servers
Container Use (Dagger)
Official Dagger MCP server — give Claude isolated container environments per task. Each agent gets its own container with configurable tools, filesystem, and network access.
daggercontainersdocker
Hooks
Claude Code Hooks Mastery
A tutorial-style hooks repository with progressive examples from basic to advanced — includes patterns for security gates, auto-formatters, and CI integrations.
hookstutorialpatterns
IDE Plugins
claudecode.nvim (Coder)
Official Coder Neovim plugin for Claude Code — native nvim integration with terminal splits, file context injection, selection-aware prompts, and LSP integration.