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

8253entries
★ starsA–Z name

mlx-whisper-mcp

23
@kachiO

Local MCP server for MLX Whisper transcription

updated Mar 2026

knowledgegraph-mcp

23
@n-r-w

MCP server for enabling persistent knowledge storage for Claude through a knowledge graph with multiple storage backends and fuzzy search

updated May 2026

claude-code-builder

23
@krzemienski

AI-powered Python CLI tool that automates the entire software development lifecycle using the Claude Code SDK. From specification to deployment, Claude Code Builder

updated Jun 2026

outlook-mcp

23
@XenoXilus

MCP server for Microsoft Office 365 Outlook – email, calendar & SharePoint integration for Claude, ChatGPT, and AI assistants via Microsoft Graph API

updated Jun 2026

selfhosted-mcp-server-template

23
@hostinger
updated May 2026

appstore-connect-mcp

23
@TrialAndErrorAI

Code Mode MCP server for App Store Connect — 923 endpoints through 2 tools

updated May 2026

loom-agent

23
@kongusen

Python agent framework with AgentHarness: planner → generator ⇄ evaluator loops for long-running tasks—plus sessions, tool/safety policies, and Claude, GPT, or Gemini.

updated Jun 2026

ai-coding-config

23
@TechNickAI

Claude Code plugin marketplace with 18 commands, 24 agents, and 33 coding rules

updated May 2026

obsidian-mcp-server

23
@bazylhorsey

A server to connect local Obisdian instances and remote vaults with Desktop AI tools like Claude and ChatGPT Desktop

updated May 2026

LLM-Autonomous-Agent-Plugin-for-Claude

23
@bejranonda

Autonomous self-learning Agent Plugin for Claude Code 🤖 Automatic learning, real-time dashboard, 40+ linters, OWASP security, CodeRabbit PR reviews. Production-ready with 100% local processing, privacy-first. Free open source AI automation tool

updated May 2026

apple-reminders-mcp

23
@dbmcco

Model Context Protocol server for macOS Apple Reminders integration with Claude

updated May 2026

xdebug-mcp

23
@kpanuragh

MCP server for PHP Xdebug debugging - enables AI-assisted PHP debugging through the Model Context Protocol with Unix socket and TCP support

updated May 2026

ai-design-engineering-cc-plugins

23
@agenisea

Human-first AI Design Engineer with 8 specialized personas.

updated May 2026

miro-mcp-server

23
@olgasafonova

MCP server for controlling Miro whiteboards with AI assistants

updated May 2026

apple-note-plugin

23
@LeetaoGoooo

Apple Notes Plugin for Claude Code

updated Jun 2026

jerry

23
@geekatron

A Claude Code plugin for behavior and workflow guardrails with knowledge accrual

updated Jun 2026

awesome-agent-skills-mcp

23
@shadowrootdev

MCP server providing 100+ AI agent skills from Anthropic, Vercel, Trail of Bits, Hugging Face & more. Works with Claude, GitHub Copilot, and any MCP client.

updated Apr 2026

autology

23
@Curt-Park

A Claude Code plugin that turns AI-assisted work into a shared living ontology. Captures decisions, conventions, and context autonomously into typed, interlinked knowledge nodes (git-committed markdown). Navigate the ontology as a graph, trace conceptual paths between ideas, and catch doc-code drift before every commit.

updated May 2026

vibeguard

23
@majiayu000

Native rules, hooks, and guards that prevent Claude Code and Codex from hallucinating code, duplicating files, or shipping unverified changes.

updated Jun 2026

gnosis-mcp

23
@nicholasglazer

Zero-config MCP server for searchable documentation (SQLite default, PostgreSQL optional)

updated May 2026

metashape-mcp

23
@jenkinsm13

AI-powered photogrammetry automation — MCP server for Agisoft Metashape Professional 2.3+. Control the full pipeline (alignment, dense cloud, mesh, texture, DEM, orthomosaic, export) using natural language through Claude or any MCP-compatible AI assistant.

updated May 2026

obsidian-reminders-sync

23
@jordanlyall

Bidirectional sync between Obsidian daily notes and macOS Reminders via Claude Code hooks

updated Mar 2026

claude-code-google-workspace

23
@evolsb

Multi-account Google Workspace (Gmail, Drive, Calendar, Sheets, Docs) + Slack MCP servers for Claude Code. Setup guide with CLAUDE.md for AI-guided installation.

updated Jun 2026

systems-design.skill

23
@ryanthedev

Claude Code plugin for distributed system design — structured frameworks for architecture review and interview prep

updated May 2026
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