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

8237entries
★ starsA–Z name

domain-blacklist-DNS-check

4
@yheshamx

Check domains for email blacklists (Spamhaus, URIBL, SURBL, ZEN, SpamCop, Barracuda) + missing SPF/DKIM/DMARC. Pure DNS, zero deps, no API keys. Ships as a Claude Code skill + standalone CLI.

updated Jul 2026

a8-loom-coordinator

4
@LoomA8osAgent

Governance, skills, and hooks stack for running Claude (or any capable LLM) as an autonomous senior engineer on any software project — frontend or backend, any language. MIT.

updated Jul 2026

prose-revision-skill-ht-anthony-lee-zhang

4
@Gabberflast

A Claude Skill for revising draft prose — essays, papers, memos, reports — on the principle of idea flow before linguistic flow. Diagnoses structure before wording, leads with the main claim, preserves the author's voice and claim strength, and knows when to leave a good draft alone. Distinct from proofreading.

updated Jul 2026

claude-promo-video

4
@smit-vanani

Turn a website URL into a premium, beat-locked product promo video with Remotion — original design system every time, music-onset-locked scenes, self-verifying renders, 16:9 + 9:16 + thumbnails.

updated Jul 2026

Bioinformatics

3
@Pavel-Kravchenko

208 bioinformatics skills for Claude Code — NGS, single-cell, metagenomics, structural biology, algorithms, AI for science

updated Jul 2026

visual-studio-mcp

3
@keny0322

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

updated Jul 2026

claude-code-tips

3
@habibbedawi

Provide ready-to-use plugins, hooks, and commands to enhance Claude Code sessions with data mining, automation, and integration tools.

updated Jul 2026

claude-chat-with-weaviate

3
@larryhudson

Demo chatbot project with Next.js, Anthropic API, Weaviate, custom tools

updated Jul 2026

gemini_cli_skill

3
@Junayedahmedd

🚀 Enhance Claude Code with Gemini CLI for better code generation, reviews, testing, documentation, and architecture analysis.

updated Jul 2026

badsub

3
@ryanhex53

Subtitle Translation and Proofreading Tool Supports OpenAI, Anthropic Claude, Google Cloud Vertex AI (for Anthropic)

updated Mar 2026

xs-command-llm-anthropic

3
@cablehead

nushell + anthropic + tool use + rich documents + cross.stream

updated Apr 2026

Easy-Diagram-AI

3
@osama96gh

Easy Diagram AI is an AI-powered diagramming tool that allows users to create, edit, and manage mermaid.js diagrams through an intuitive interface. The application combines a React frontend with a Flask backend and leverages Anthropic Claude AI to enable natural language diagram modifications.

updated Nov 2025

celo-hackathon-agent

3
@celo-org

This tool analyzes GitHub repositories for Celo hackathon projects, evaluating code quality and checking for Celo blockchain integration using LangChain and Anthropic's Claude AI model.

updated Nov 2025

claude-code-agent-extension

3
@jamsturg

Chrome extension providing a Phantom-like UI for Claude Code agent operations

updated Aug 2025

mcp-occams-razor

3
@199-mcp
updated Jun 2026

macOs_Claude_Overlay

3
@Tong-Liu-128

A macOS overlay tool for Anthropic Claude

updated Jun 2026

model_context_protocol_training

3
@jakeyShakey

A Slidev presentation and developer guide to the Model Context Protocol (MCP) by Anthropic, covering AI integration, LLM tool use, core concepts, and implementation examples for AI agents. #mcp #a

updated Aug 2025

project-prompt

3
@Dixter999

AI-powered tool for project analysis, documentation generation, and improvement suggestions. Uses Anthropic Claude to analyze project structure and provide intelligent recommendations.

updated Jul 2025

raycast-claude-code-cheatsheet

3
@harumeri

Claude Code Cheatsheet - Raycast Extension

updated Aug 2025

claude-search

3
@jbenton

A simple tool for browsing or searching your past conversations with Anthropic's Claude.

updated May 2026

claude-container-tool

3
@tarakbluru

Containerized development environment for Anthropic Claude Code using Podman/Docker

updated Dec 2025

claude-code-goodies

3
@mathewtaylor

Community hooks and tools to make Claude Code safer, smarter, and more notifiable

updated Oct 2025

claude-code-hooks-template

3
@r-strawser

Starting Claude Code template with locally scoped hooks set up.

updated Oct 2025

claude-code-hook-sdk

3
@mizunashi-mana

A TypeScript SDK to write claude-code hooks easily with type safety, dependency injection, and comprehensive testing support.

updated Feb 2026
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