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

OpenACP

407
@Open-ACP

Self-hosted bridge that lets you interact with AI coding agents (Claude Code, Codex, etc.) from messaging platforms (Telegram, Discord, etc.) via the Agent Client Protocol (ACP).

updated May 2026

claudecode-rule2hook

406
@zxdxjtu

Transform natural language project rules into Claude Code automation hooks - Write rules in plain English and let Claude automatically generate powerful hooks for code formatting, testing, validation and more

updated May 2026

PerformanceMonitor

406
@erikdarlingdata

Free, open-source SQL Server performance monitoring — 32 collectors, real-time alerts, graphical plan viewer, MCP server for AI analysis. Supports SQL 2016-2025, Azure SQL, AWS RDS.

updated May 2026

Aegis

405
@GanyuanRan

Make AI coding agents architecture-aware: baseline-first, evidence-verified, drift-checked, and safe across long tasks.

updated Jun 2026

claude-code-workflows

404
@shinpr

Production-ready development workflows for Claude Code, powered by specialized AI agents.

updated Jun 2026

UE5-MCP

403
@VedantRGosavi

MCP for Unreal Engine 5

updated May 2026

mcp

403
@mondaycom

Enable AI agents to work reliably - giving them secure access to structured data, tools to take action, and the context needed to make smart decisions.

updated May 2026

entroly

403
@juyterman1000

Local proxy that cuts your Claude / OpenAI / Gemini bill 70%+. Drop-in for Cursor, Claude Code, Codex, Aider — 30 seconds, no code changes.

updated Jun 2026

Disciplined-AI-Software-Development

402
@Varietyz

A disciplined methodology for AI-assisted software development. Covers architectural constraints, validation hooks, session governance, and PAG (Pattern Abstract Grammar) for structured AI collaboration. Copy claude-setup/ into your project to start.

updated May 2026

life-sciences

401
@anthropics

Repo for the Claude Code Marketplace to use with the Claude for Life Sciences Launch. This will continue to host the marketplace.json long-term, but not the actual MCP servers.

updated May 2026

clauditor

401
@IyadhKhalfallah

Stop Claude Code from burning through your quota in 20 minutes. Auto-rotates oversized sessions and preserves context.

updated Jun 2026

coolify-mcp

400
@StuMason

MCP server for Coolify — 42 optimized tools for managing self-hosted PaaS through AI assistants

updated May 2026

awesome-claude-code

400
@jqueryscript

A curated list of awesome tools, IDE integrations, frameworks, and other resources for developers working with Anthropic's Claude Code.

updated Jun 2026

token-optimizer-mcp

400
@ooples

Intelligent token optimization for Claude Code - achieving 95%+ token reduction through caching, compression, and smart tool intelligence

updated May 2026

claude-code-notion-plugin

400
@makenotion

Connect Claude Code to Notion via this Plugin

updated May 2026

bug-hunter

400
@codexstar69

Adversarial AI bug hunter with auto-fix skill for Claude Code, Cursor, Codex CLI, GitHub Copilot CLI, Kiro CLI, Opencode, Pi Coding Agent, and more. Multi-agent pipeline finds security vulnerabilities, logic errors, and runtime bugs — then fixes them autonomously on a safe branch.

updated May 2026

dispatch

399
@bassimeledath

A Claude Code skill that 10x's your effective context window by dispatching tasks to background AI workers.

updated May 2026

better-agent-terminal

398
@tony1223

Multi-workspace terminal aggregator with Claude Code AI integration

updated Jun 2026

skillz

397
@intellectronica

An MCP server for loading skills (shim for non-claude clients).

updated May 2026

mcp-youtube-transcript

396
@jkawamoto

MCP server retrieving transcripts of YouTube videos

updated May 2026

solon-ai

396
@opensolon

Java AI application development framework (supports LLM-tool,skill; RAG; MCP; Agent-ReAct,Team-Agent). Compatible with java8 ~ java25. It can also be embedded in SpringBoot, jFinal, Vert.x, Quarkus, and other frameworks.

updated Jun 2026

ok-skills

394
@mxyhi

Curated AI coding agent skills and AGENTS.md playbooks for Codex, Claude Code, Cursor, OpenClaw, and other SKILL.md-compatible tools.

updated Jun 2026

mcp-server

393
@e2b-dev

Giving Claude ability to run code with E2B via MCP (Model Context Protocol)

updated May 2026

todoist-mcp-server

393
@abhiz123

MCP server for Todoist integration enabling natural language task management with Claude

updated May 2026
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