Open-Source Directory — Claude / Anthropic

Claude
Tools

A curated index of extensions, plugins, MCP servers, hooks, and integrations for Claude — discovered from GitHub and refreshed daily.

Repository Growth — Last 30 Days

8250entries
★ starsA–Z name

Anthropic-Cybersecurity-Skills-101

2
@FloatingFlowGod

754 structured cybersecurity skills for AI agents · Mapped to 5 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND & NIST AI RMF · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 26 security domains · Apache 2.0

updated May 2026

Anthropic-Cybersecurity-Skills-847

2
@System32manager

754 structured cybersecurity skills for AI agents · Mapped to 5 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND & NIST AI RMF · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 26 security domains · Apache 2.0

updated May 2026

Anthropic-Cybersecurity-Skills-120

2
@superpeperzk2842-dotcom

754 structured cybersecurity skills for AI agents · Mapped to 5 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND & NIST AI RMF · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 26 security domains · Apache 2.0

updated May 2026

Anthropic-Cybersecurity-Skills-915

2
@superpeperzk2842-dotcom

754 structured cybersecurity skills for AI agents · Mapped to 5 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND & NIST AI RMF · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 26 security domains · Apache 2.0

updated May 2026

Anthropic-Cybersecurity-Skills-321

2
@System32manager

754 structured cybersecurity skills for AI agents · Mapped to 5 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND & NIST AI RMF · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 26 security domains · Apache 2.0

updated May 2026

Anthropic-Cybersecurity-Skills-612

2
@superpeperzk2842-dotcom

754 structured cybersecurity skills for AI agents · Mapped to 5 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND & NIST AI RMF · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 26 security domains · Apache 2.0

updated May 2026

Anthropic-Cybersecurity-Skills-973

2
@Zzzgamingo

754 structured cybersecurity skills for AI agents · Mapped to 5 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND & NIST AI RMF · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 26 security domains · Apache 2.0

updated May 2026

Anthropic-Cybersecurity-Skills-480

2
@Zzzgamingo

754 structured cybersecurity skills for AI agents · Mapped to 5 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND & NIST AI RMF · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 26 security domains · Apache 2.0

updated May 2026

Anthropic-Cybersecurity-Skills-448

2
@Zzzgamingo

754 structured cybersecurity skills for AI agents · Mapped to 5 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND & NIST AI RMF · agentskills.io standard · Works with Claude Code, GitHub Copilot, Codex CLI, Cursor, Gemini CLI & 20+ platforms · 26 security domains · Apache 2.0

updated May 2026

zhaoyaojing

2
@290963249

照妖镜 · Mirror Skill — Identify gap, recommend optimal elimination, converge in multiple rounds. A single Claude Code Skill file, zero deployment.

updated Jun 2026

redplan

2
@Redloft

Multi-role plan verification skill for Claude Code — protocol-driven panel of architect/qa/security/judge + optional cross-model verify via GPT-5 and Gemini 2.5 Pro.

updated Jun 2026

magic-memory

2
@rox1694125-bit

An AI concept-learning coach: intuition-first teaching + spaced-repetition flashcards. Understand AND remember. Portable across Claude Code, Codex, and any agent.

updated Jun 2026

ClaudeUsageBar

1
@gamfidick

📊 Track your Claude.ai usage seamlessly with this lightweight macOS menu bar app, providing real-time updates and notifications.

updated Jun 2026

claude-code-ultimate-guide

1
@andyaziz

🌐 Discover clear guidance and templates for using Claude effectively, enhancing your coding skills and productivity through engaging quizzes and resources.

updated Jun 2026

visual-studio-mcp

1
@keny0322

🔧 Connect Visual Studio to AI assistants via MCP to automate building, debugging, and error inspection for smarter development workflows.

updated Jun 2026

claude-skill-bog-payment-gateway

1
@furkha

💳 Streamline BOG payment processing with this Claude skill, enabling easy integration, order management, and callback handling for Georgian transactions.

updated Jun 2026

Veltrix-skills

1
@LukeJMadden

16 business operations skills for Claude Code, Cursor, Codex and AI agents. Finance, sales, strategy, customer success, product, procurement plus 13 task profiles. Built by Veltrix Collective.

updated Apr 2026

Claude-Code-Agent-Monitor

1
@FaizanAliMalik

Monitor and visualize Claude Code agent sessions, tool use, and orchestration in real-time with a Node.js and React dashboard integrated via native hooks.

updated Jun 2026

arc-skill

1
@Fredjuel

Provide architecture guidelines and code templates for AI agents to scaffold and maintain production-ready React Native (Expo) projects consistently.

updated Jun 2026

MCP-Server

1
@bautiroalt

🚀 Launch a local server with ease using MCP Server for instant backend and interface setup, all with a single double-click.

updated Jun 2026

claude-skill-ugc-prompt

1
@carreras66848657

Generate production-ready UGC video ad prompts for Higgsfield AI Marketing Studio from your reference images and product descriptions.

updated Jun 2026

claude-skills-collection-2026

1
@AgentCoffee006

Provide a comprehensive set of tested Claude Skills for development, productivity, research, content creation, and automation in Agent Skills-compatible environments.

updated Jun 2026

Prompt_Wizard

1
@richardsbrian

A tool that streamlines screenshot capture and content analysis using Anthropic's Claude API. Capture, prompt, and receive AI-powered insights with a simple hotkey

updated Aug 2025

claude-custom-tools-typescript

1
@larryhudson

A tutorial to learn about adding custom tools to Claude with Anthropic's SDK

updated Jul 2024
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