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

anthropic-agent-sdk-learning-project

0
@ebetancourt

Hands-on learning program for mastering AI agent development with the Claude Agent SDK. Building automation tools including TODO aggregators, documentation generators, and more.

updated Jan 2026

AnthropicToolUseBuffer

0
@johnbrodowski

A C# implementation of asynchronous tool execution buffering for Anthropic's Claude API. This library enables **true parallel conversation and tool execution** - users can continue chatting while long-running tools execute in the background.

updated May 2026

spec-driven-proof-of-concept

0
@bowmanonjupiter2

a proof of concept of using visual studio code and claude code extension for spec driven development

updated Dec 2025

anthropic-developer-relations-prototypes

0
@forgo

Prototypes and docs/tooling concepts to reduce friction in Anthropic's Claude + Claude Code onboarding, configuration, and responsible usage.

updated Dec 2025

feature-coder-extension

0
@joe-vest

VS Code extension that uses Claude Code (and OpenAI, optionally) to architect and build features in your codebase.

updated Dec 2025

claude-chrome-bridge

0
@jdphil

Network bridge enabling Claude Code on Linux to control Chrome on Windows via the Claude Chrome extension

updated Dec 2025

agents-md-vscode-extension

0
@kamilio

Keeps `AGENTS.md` and `CLAUDE.md` aligned inside a workspace.

updated Jan 2026

react-annotator-chrome

0
@fisherjoey

Chrome extension for annotating React components on webpages for Claude Code

updated Jan 2026

oy-claude-extensions

0
@oy-zaksal58

올리브영 개발자를 위한 Claude Code 확장

updated Jan 2026

agp-marketplace

0
@adrianpuiu

Custom plugins marketplace for AGP's Claude Code extensions

updated Jan 2026

cc-schema-helper

0
@jpeggdev

VS Code extension providing IntelliSense, JSON schema validation, and settings override visualization for Claude Code configuration files

updated Jan 2026

claude-code-extension

0
@RyanErkal
updated Jan 2026

claude-code-tool-dev

0
@jpsweeney97

Monorepo for Claude Code extensions (skills, plugins, hooks)

updated May 2026

claude-skills

0
@mnttnm

Custom Claude Code skills spanning UI/UX, productivity, and developer tooling

updated Apr 2026

coding-agent-extension-builder

0
@takahirom

Kotlin library for generating coding agent (Claude Code, etc.) marketplace and plugins, etc. using Builder pattern to provide compile-time validation

updated Jan 2026

claude-hiring-assistant

0
@mtgibbs

An AI-powered CLI tool that leverages Anthropic's Claude to analyze resumes and generate tailored interview questions, streamlining the initial candidate screening process.

updated Jan 2026

twitterblock

0
@whrobbins

Claude Code generated extension to block Twitter except for posting, notifications, and messaging.

updated Jan 2026

agy-tools

0
@ChrAlpha

Antigravity API 管理小工具。支持一键启动隐式配置好的 Claude Code 等开发助手。

updated Jan 2026

tool-search-mcp

0
@brianlopez-resmark

Claude Code plugin: 85% token reduction via on-demand tool discovery using Anthropic's Tool Search Pattern

updated Jan 2026

claude-experiments

0
@namick

Custom extensions and experiments for Claude Code

updated Jan 2026

Nyx_Dynamics_Claude_Code_Extensions

0
@Nyx-Dynamics

Proprietary Claude Code GitHub CLI integration commands

updated Jan 2026

FORK

0
@juxstin1

Claude Code extension to help AI Build and Ship Mobile Applications

updated Feb 2026

claude-code-toolkit

0
@lucascerro

Skills and extensions for Claude Code

updated Jan 2026

claude-session-manager

0
@sethlazar

VS Code/Cursor extension to manage multiple Claude Code CLI sessions

updated Jan 2026
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