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

8236entries
★ starsA–Z name

mcps-playground

1
@bighadj22

MCP Playground: Experiment with Anthropic's Claude & Model Context Protocol. Chat, connect servers, test tools.

updated Mar 2026

ai-research-assistant

1
@Elly-su

AI-powered research assistant that uses advanced language models and real-time web tools to answer queries, summarize information, and save structured research outputs.

updated Jul 2026

mcp-servers-list

1
@199-mcp

📋 Comprehensive list of Model Context Protocol (MCP) servers for Claude and AI tools

updated May 2026

claude-code-customizer

1
@hikarubw

Tools to customize Claude Code VSCode extension - automatically resume sessions and more

updated Jul 2025

AdvanceClaudeCodeAgent-with-Anthropic-api-Key

1
@Anakintano

Build an intelligent AI agent 🤖 that can generate, execute, and validate Python code live — using LangChain, Anthropic's Claude API, and a custom REPL tool. Perfect for automated data analysis, algorithm testing, and ML workflows. Comes with built-in validation, detailed examples, and full execution tracking. 🚀

updated Jun 2025

PromptProof

1
@MindfulwareDev

Plug-and-play guardrail prompts for any LLM — injection defense, hallucination control, bias detection, PII protection, and 50+ more. Includes CLI tools, adversarial test suite, and integration templates for OpenAI, Anthropic, Ollama, LangChain & LlamaIndex.

updated Mar 2026

vscode-extension-claude-code-usage-monitor

1
@usabarashi

A VSCode extension for monitoring Claude Code token usage with smart baseline tracking and real-time status display.

updated Jan 2026

secondary-terminal

1
@ytyng

A VSCode extension that displays a multi-tab terminal. It is primarily designed with a strong focus on running development agents such as Claude Code.

updated Jul 2026

enterprise-claude-gtp-tool

1
@anilatambharii

This project demonstrates how to build an enterprise-grade Generative Task Processing (GTP) tool by integrating Anthropic's Claude AI with a full-stack architecture. The repo includes API integration, backend, frontend, database design, and advanced features like prompt memory and session management

updated Oct 2025

movie-browsing-app

1
@Napwapp

A simple movie browsing app built with Next.js and Tailwind CSS. Users can search and view popular movies using the TMDb API. This project was created for learning purposes with coding assistance from AI tools: ChatGPT (OpenAI) and Claude.AI (Anthropic).

updated Aug 2025

promptlang-app

1
@simonpierreboucher02

PromptLang is a minimalist search engine for exploring, understanding, and testing AI prompts. It serves as a reference tool for discovering high-quality prompts for various AI models, with built-in testing capabilities and admin management.

updated Jun 2026

MCP-Server-Tutorial

1
@DazzleML

A detailed hands-on tutorial for learning Model Context Protocol (MCP) server development with Python. Includes working examples, VSCode debugging setup, tests, and a step-by-step guide covering everything from basic architecture to deployment. Perfect for anyone wanting to build AI-integrated tools and to understand how Claude extensions work.

updated Nov 2025

AI-Agent-01

1
@Nouman-wp

A smart research assistant powered by LangChain, Anthropic Claude 3.5, and real-time tools like DuckDuckGo and Wikipedia. It generates structured research outputs from user queries, optionally saving them to a local file.

updated Jul 2025

cc-mcp-command-generator

1
@Riti0208

Chrome extension for easily generating Model Context Protocol (MCP) commands for Claude Code

updated Jul 2025

bblslug

1
@habralab

Bblslug is a versatile translation tool that can be used as both a CLI utility and a PHP library. It leverages LLM-based APIs to translate plain text, HTML and JSON while preserving structure, code blocks, and URLs via placeholder filters.

updated Jan 2026

Goo-code

1
@francisgreenleaf

A Go-based chat agent using the Anthropic Claude API with advanced tool calling capabilities and conversation management

updated Oct 2025

vscode-extension-claude-code

1
@maskzh

A VS Code extension that launches multiple Anthropic-compatible AI terminals.

updated Feb 2026

ai-mock-api-genie

1
@simplyrk

🧞 AI Mock API Genie is an intelligent API mocking tool that revolutionizes how developers create realistic test environments. Unlike traditional mock tools that generate random data, it captures real API responses, uses AI (Anthropic Claude/OpenAI) to understand patterns and generates contextually appropriate mock data for complex domains

updated Dec 2025

replit-mcp-extension

1
@jabberlockie

Replit MCP Server Extension for Claude Code integration

updated Sep 2025

jupyterlab-claude-code-refresh

1
@wenatuhs

Jupyter lab extension that auto-refreshes notebooks when modified by Claude Code (or whatever)

updated Sep 2025

nofx-vscode

1
@benfinklea

VS Code extension for orchestrating multiple Claude Code AI agents in parallel

updated Nov 2025

claude-code-vscode-patcher

1
@jimmystridh

A tool to patch the Claude Code VS Code extension to automatically inject command-line arguments like --dangerously-skip-permissions when launching Claude Code

updated Feb 2026

claude-input-enhancer

1
@nqh-packages

Enhanced text input panel for Claude Code terminal - VS Code extension

updated Jan 2026

surge

1
@masamerc

A chrome extension for recurring pop-ups / alerts primarily coded by Claude Code©

updated Sep 2025
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