anthropics / claude-plugins-official

Anthropic-managed marketplace directory of curated plugins for Claude Code, split into internal and external plugin folders.

cloudflare / security-audit-skill

A coding-agent skill that runs multi-phase security audits with isolated agents and independently verified, machine-readable findings.

obra / superpowers

A composable skills framework and development methodology that guides coding agents through design, planning, TDD, and subagent-driven implementation.

cursor / plugins

A repository of official Cursor plugins for developer tools and workflows, plus the plugin specification they follow.

affaan-m / ECC

Agent harness system of skills, agents, hooks, rules, memory, and security scanning for Claude Code, Codex, Cursor, and other AI coding tools.

pbakaus / impeccable

Design guidance skill and detector rules that steer AI coding agents away from generic frontend design patterns.

michael-denyer / pstack-claude

Port of Poteto's pstack, a set of opinionated agent workflow skills, translated for Claude Code, Codex, Copilot, Pi, OpenCode, and Gemini.

addyosmani / agent-skills

A set of production-grade engineering skills and slash commands that guide AI coding agents through spec, plan, build, test, review, and ship phases.

Donchitos / Claude-Code-Game-Studios

A set of 49 Claude Code subagents and 74 slash-command workflows that structure an AI session into a game dev studio with defined roles.

Nutlope / hallmark

A design skill for Claude Code, Cursor, and Codex that generates UI deliberately avoiding generic AI-generated aesthetics.

WorldFlowAI / everything-claude-code

A collection of Claude Code agents, skills, hooks, commands, rules, and MCP configs packaged as a plugin.

expo / skills

Official Expo team AI agent skills for building, deploying, upgrading, and debugging Expo apps and EAS services.