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

8165entries
★ starsA–Z name

mcp-security-hub

565
@FuzzingLabs

A growing collection of MCP servers bringing offensive security tools to AI assistants. Nmap, Ghidra, Nuclei, SQLMap, Hashcat and more.

updated May 2026

Agent-Skills

565
@MicrosoftDocs

Curated Agent Skills for Microsoft & Azure – giving AI coding assistants structured, real-time expertise from Microsoft Learn docs.

updated Jun 2026

mda

563
@sno-ai

MDA Open Spec — a Markdown superset for agent-facing documents. One .mda source compiles to drop-in SKILL.md, AGENTS.md, MCP-SERVER.md, and CLAUDE.md. JSON Schema validated, with typed dependency graph, footnote relationships, and Sigstore-anchored signatures. For agentskills.io and AAIF runtimes.

updated May 2026

sonarqube-mcp-server

563
@SonarSource

Official SonarQube MCP Server for code quality and security in AI agents

updated May 2026

home-assistant-vibecode-agent

563
@Coolver

Home Assistant MCP server agent. Enable Claude Code, Cursor, VS Code or any MCP-enabled IDE to help you vibe-code and manage Home Assistant: create and debug automations, design dashboards, tweak themes, modify configs, and deploy changes using natural language

updated Jun 2026

vmlx

563
@jjang-ai

vMLX - JANGTQ Uber Compressed MLX Models - L2 Disk Cache (survives restart) + L1 Paged (super fast ttft) + Hybrid SSM Scheduler + Cont Batching + etc!

updated Jun 2026

matlab-agentic-toolkit

562
@matlab

The MATLAB Agentic Toolkit brings trusted MATLAB capabilities to AI agents, making engineering and scientific workflows agent-ready.

updated Jun 2026

iterm-mcp

556
@ferrislucas

A Model Context Protocol server that executes commands in the current iTerm session - useful for REPL and CLI assistance

updated May 2026

bkit-claude-code

554
@popup-studio-ai

bkit Vibecoding Kit - PDCA methodology + Claude Code mastery for AI-native development

updated May 2026

PaperOrchestra

554
@Ar9av

An automated AI research-paper writer based off Google's PaperOrchestra paper's implementation through a skills - benchmark + autoraters using any coding agent (Claude Code, Cursor, Antigravity, Cline, Aider). No API keys, no LLM SDKs.

updated May 2026

google-docs-mcp

553
@a-bonus

The Ultimate Google Docs, Sheets, Drive, Gmail, & Google Calendar MCP Server. This MCP (primarily for use in Claude Desktop) gains full access to your google suite and lets claude do its thing.

updated May 2026

cmux

552
@craigsc

cmux: tmux for Claude Code

updated May 2026

Mantic.sh

550
@marcoaapfortes

A structural code search engine for Al agents.

updated May 2026

heym

550
@heymrun

Self-hosted AI workflow automation platform with visual canvas, agents, RAG, HITL, MCP, and observability in one runtime.

updated May 2026

Auditor

549
@TheAuditorTool

Release channel for TheAuditor — see blog.theauditortool.com

updated May 2026

archify

549
@tt-a1i

Any agent Skill: generate beautiful architecture diagrams with dark/light theme toggle and PNG/JPEG/WebP/SVG export

updated Jun 2026

adversarial-spec

548
@zscole

A Claude Code plugin that iteratively refines product specifications by debating between multiple LLMs until all models reach consensus.

updated May 2026

spool

548
@paperboytm

Your local AI session library. Collects sessions from Claude Code, Codex CLI, Gemini CLI (and more) — browsable and ⌘K-searchable.

updated Jun 2026

human-skill-tree

546
@24kchengYe

🌳 AI-Powered Skill Tree for Lifelong Human Learning. 30+ skills from K-12 to career & social intelligence, built on cognitive science. | 人类养成记:AI 驱动的终身学习技能树

updated May 2026

claude-equity-research

545
@quant-sentiment-ai

🔌 Claude Code Plugin for institutional-grade equity research. Install with /plugin marketplace add. Generates professional buy/sell recommendations with comprehensive fundamental analysis, technical indicators, and risk assessment. Educational use only - not financial advice.

updated May 2026

tda

543
@irockel

TDA - Thread Dump Analyzer (for Java). Analyze your Thread Dumps with a GUI or use it as MCP Server.

updated May 2026

vestige

541
@samvallad33

Cognitive memory for AI agents — FSRS-6 spaced repetition, 29 brain modules, 3D dashboard, single 22MB Rust binary. MCP server for Claude, Cursor, VS Code, Xcode, JetBrains.

updated May 2026

robotics-skills-suite

538
@jherrodthomas

76 audit-ready Claude skills automating the industrial robot, cobot, AMR, ROS2, V&V, AI/ML, and IEC 62443 lifecycle. 38 builder + reviewer pairs anchored to ISO 10218, 13849, 62061, 12100, 9283, 15066, 3691-4, and IEC 62443.

updated May 2026

swarmclaw

537
@swarmclawai

Open-source self-hosted AI agent runtime and multi-agent framework for autonomous agent swarms. Agent memory, MCP tools, schedules, delegation, and 23+ LLM providers (Claude, GPT, Gemini, OpenRouter, Ollama). A practical Claude Code and LangChain alternative.

updated May 2026
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