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

8250entries
★ starsA–Z name

claude-code-advanced-tool-use

1
@unsafe9

Local proxy server to test Anthropic's Advanced Tool Use features in Claude Code.

updated Mar 2026

claude-code-bridge

1
@absmartly

HTTP bridge server for ABsmartly Extension to communicate with Claude Code CLI

updated Jan 2026

crypto-tools-mcp

1
@marc-shade

Cryptographic analysis tools - Caesar cipher, frequency analysis, classical cipher cracking

updated Apr 2026

claude-code-skill-activator

1
@gabelul

Skill auto-detection for Claude Code. AI extracts keywords once (OpenAI/Anthropic/Ollama or piggyback on Claude CLI - no API key needed), then fast offline matching suggests skills as you type.

updated Apr 2026

claude-codeUI-by-nexalance

1
@developerjillur

A Complete Solution for Claude Code UI Chat Extension For VS Code inspired by claude-code-chat

updated May 2026

vaiz-mcp

1
@vaizcom

MCP (Model Context Protocol) client for Vaiz for Cursor/Claude

updated Mar 2026

querino

1
@MichaelZelbel

Open-source prompt development and orchestration system powered by Supabase.

updated May 2026

Skill_GEMINI_Extension

1
@MohamedHamed19m

An extension for Gemini that includes an MCP (Model Context Protocol) server for loading skills on demand, similar to how Claude Code Skills operate.

updated Jan 2026

directus-extension-embeddable-forms

1
@JoshTheDerf

An extension for embedding full-featured Directus forms in any page, built with Directus MCP and Claude Code

updated May 2026

codex-skills-integration

1
@oferhalevi

Integrate Anthropic's Claude Skills with Codex CLI using progressive discovery and project-specific configuration

updated Jan 2026

claude-code-vercel-proxy

1
@ban-shao

A Cloudflare Worker proxy that enables Claude Code to use Vercel AI Gateway. Converts Anthropic API format to Vercel AI SDK calls with full support for thinking, vision, tools, and streaming.

updated Jan 2026

claude-code-ext

1
@meysam81

Common utilities for Claude Code in a lean Chrome Extension

updated Mar 2026

claude-deck

1
@jinxlzc

Claude Deck is a local-only VS Code extension and OTLP receiver that observes Claude Code execution, captures metrics and traces, aggregates session usage, and enforces proof-first engineering workflows.

updated Dec 2025

neo-llm-security

1
@Cornjebus

AI security co-pilot skill for Claude Code - identify, test, and fix vulnerabilities in LLM-powered applications

updated Dec 2025

claude-code-sessions

1
@neozenith

FastAPI + React dashboard for visualizing Claude Code session usage and costs from `~/.claude/projects/` JSONL files using sqlite-muninn extensions.

updated May 2026

linear-skills

1
@conorluddy

A lightweight Claude Code skill for fetching Linear issue details without the context overhead of the full Linear MCP.

updated Dec 2025

eden

1
@maxwellmattryan

Personal toolbox containing miscellaneous scripts, utilities, and Claude Code extensions.

updated May 2026

claude-skills-deep-analysis

1
@t3rm1nu55

Forensic analysis of Anthropic's Agent Skills: structural anatomy, cognitive dynamics, and advanced authoring techniques

updated Jan 2026

shipkit

1
@stefan-stepzero

Shipkit — AI-assisted product development framework for Claude Code. Skills, agents, and workflows for shipping MVPs fast.

updated Jun 2026

prompt-shaper-vscode

1
@JQX369

VS Code extension to turn dictated text into structured prompts for Claude Code

updated Dec 2025

claude-extension-toolkit

1
@sirtaj

A Claude Code plugin to help you create Claude Code plugins

updated May 2026

mcp-reasoning

1
@quanticsoul4772

MCP server providing 15 structured reasoning tools via Anthropic Claude API

updated Jun 2026

copt

1
@praveenc

⚡ CLI tool to migrate prompts from Claude 3.x to Claude 4.5 — Analyzes anti-patterns, optimizes with LLM, supports AWS Bedrock & Anthropic API

updated Apr 2026

teachme-claude-code

1
@Shafik23

Learn Claude Code - Educational repository for mastering Anthropic's agentic coding tool

updated Mar 2026
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