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

pg-aiguide

1.8k
@timescale

MCP server and Claude plugin for Postgres skills and documentation. Helps AI coding tools generate better PostgreSQL code.

updated May 2026

open-ralph-wiggum

1.7k
@Th0rgal

Type `ralph "prompt"` to start open code in a ralph loop. Also supports a prompt file & status check. Open Code, Claude Code, Codex, Copilot

updated May 2026

mcp-unity

1.7k
@CoderGamester

Model Context Protocol (MCP) plugin to connect with Unity Editor — designed for Cursor, Claude Code, Codex, Windsurf and other IDEs

updated May 2026

pilot-shell

1.7k
@maxritter

How real engineers run Claude Code and Codex: spec-driven planning, enforced TDD, persistent memory, and quality enforcement on all levels. Make your agents production-ready.

updated May 2026

claude-code-cheat-sheet

1.7k
@Njengah

Ultimate collection of Claude Code tips, tricks, hacks, and workflows that you can use to master Claude Code in minutes

updated May 2026

grepai

1.7k
@yoanbernabeu

Semantic Search & Call Graphs for AI Agents (100% Local)

updated May 2026

awesome-claude-plugins

1.7k
@ComposioHQ

A curated list of Plugins that let you extend Claude Code with custom commands, agents, hooks, and MCP servers through the plugin system.

updated May 2026

agent-rules-books

1.7k
@ciembor

AGENTS.md rules / skills for AI coding agents: Codex, Cursor & Claude Code. Inspired by Clean Code, Refactoring, DDD, Clean Architecture and DDIA programming books.

updated Jun 2026

zenfeed

1.7k
@glidea

Make RSS 📰 great again with AI 🧠✨!! [作者新开的Gpt模型中转站 - 0.2 倍率, 0.2元当1刀花,比官方便宜35倍 https://token.glidea.app]

updated May 2026

claude-usage

1.7k
@phuryn

A local dashboard for tracking your Claude Code token usage, costs, and session history. Pro and Max subscribers get a progress bar. This gives you the full picture.

updated Jun 2026

pentest-ai-agents

1.7k
@0xSteph

Turn Claude Code into your offensive security research assistant. Specialized AI subagents for authorized penetration testing plan engagements, analyze recon, research exploits, build detections, audit STIGs, and write reports.

updated Jun 2026

slack-mcp-server

1.6k
@korotovsky

The most powerful MCP Slack Server with no permission requirements, Apps support, GovSlack, DMs, Group DMs and smart history fetch logic.

updated May 2026

paper-search-mcp

1.6k
@openags

MCP, CLI, Skills for searching and downloading academic papers from multiple sources like arXiv, PubMed, bioRxiv, etc.

updated Jun 2026

avoid-ai-writing

1.6k
@conorbronsdon

Skill that audits and rewrites content to remove AI writing patterns. Use it with your favorite agents including Claude Code, OpenClaw, and Hermes.

updated Jun 2026

mcptools

1.6k
@f

A command-line interface for interacting with MCP (Model Context Protocol) servers using both stdio and HTTP transport.

updated May 2026

mcp-brasil

1.6k
@Mcp-Brasil

MCP Server para 70 APIs públicas brasileiras

updated May 2026

claude-code-sub-agents

1.6k
@lst97

Collection of specialized AI subagents for Claude Code for personal use (full-stack development).

updated May 2026

skybridge

1.6k
@alpic-ai

Skybridge is a full-stack TypeScript framework for MCP Apps and ChatGPT Apps. Type-safe. React-powered. Platform-agnostic.

updated Jun 2026

claude-code-prompt-improver

1.6k
@severity1

Intelligent prompt improver hook for Claude Code. Type vibes, ship precision.

updated May 2026

mcp-language-server

1.5k
@isaacphi

mcp-language-server gives MCP enabled clients access semantic tools like get definition, references, rename, and diagnostics.

updated May 2026

claude-code-settings

1.5k
@feiskyer

Claude Code settings, commands and agents for vibe coding

updated Jun 2026

PrismerCloud

1.5k
@Prismer-AI

Prismer Cloud

updated May 2026

claude-prism

1.5k
@delibae

An offline-first scientific writing workspace powered by Claude. LaTeX + Python + 100+ scientific skills all running locally.

updated Jun 2026

skills

1.5k
@browser-act

Browser automation CLI built for AI agents. Break through anti-bot walls, hand off to humans across platforms when stuck. Parallel multi-task execution, independent multi-session operation, isolated multi-account browsing.

updated Jun 2026
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