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

8245entries
★ starsA–Z name

design-inspect-extension

1
@vaclavkocian

Chrome extension: click elements in your running app and copy Claude Code-ready revision instructions

updated Jul 2026

tradingview-mcp

1
@asman9659

Control TradingView Desktop charts and automate Pine Script workflows using Claude Code and the Chrome DevTools Protocol.

updated Aug 2026

awesome-claude-certification

1
@mbcltd

A curated list of resources for Anthropic's Claude certification exams (CCAO-F, CCDV-F, CCAR-F, CCAR-P) — official material, free study guides, practice tools, and communities

updated Aug 2026

Anthropic-Tool-Calling-Guide

1
@sdxo1408-cyber

A hands-on guide to implementing Tool Calling with the Anthropic Claude API using Python and Jupyter Notebooks

updated Jul 2026

calendar-agent

1
@aadeshmahesh

AI agent that schedules calendar events using natural language — agentic loop, tool use, Ollama + Anthropic Claude

updated Jul 2026

agentic-toolkit

1
@marsmike

Vault-first toolkit for Claude Code — curated plugins over an Obsidian-compatible knowledge vault, governed by an explicit contract, gated by evals, continuously delivered.

updated Jul 2026

ai-investing-agent

1
@mayankmathur-git

Python + Claude API tool that screens equities through a two-gate fundamental→technical pipeline and uses Claude's vision model to read candlestick charts, producing ranked, risk-sized trade recommendations.

updated Jul 2026

AgentTrace

1
@eklavya2201

Flight recorder for LLM agents: trace every LLM call, tool call and decision with tokens, cost and latency - replay any run as an interactive timeline

updated Jul 2026

edge-obsidian-clipper

1
@Ashura-22

One-click browser-to-Obsidian AI study pipeline. Manifest V3 extension + native messaging + Claude Code agents + Excalidraw diagrams.

updated Jul 2026

Claude-Opus-Limit-Tools-2026

1
@RouteAgitate

Advanced Windows desktop application for Claude Opus users. Smart limit management, token optimization, context handling and extended session tools. Maximize productivity with Anthropic Opus models. Lightweight, clean interface, regularly updated.

updated Jul 2026

SillyTavern-Extension-CandyExpressions

1
@CountCandy

Character Expression Extension via Claude Code (Opus 5)

updated Jul 2026

bug-lens

1
@Aoyia

Chrome Extension capturing frontend bug evidence (DOM, click tracks, console & network) to generate structured AI prompts & context for Cursor & Claude Code. 捕获 DOM、点击交互、控制台日志与网络日志并生成结构化 AI 提示词的前端缺陷信息收集浏览器插件🐮

updated Aug 2026

email-agent

1
@Daguilar0123

A first agent, written to be read rather than reused. Model + tools + loop, ~30 lines of control flow, against a fake inbox so the blast radius is zero.

updated Jul 2026

CmdPalClaudeDesktopExtension

1
@zmsl

PowerToys Command Palette extension for Claude Desktop: type a prompt, press Enter, land in Claude chat, Claude Code, or the CLI.

updated Aug 2026

claude-code-zh

1
@Iwantkillbob

Claude Code VS Code 扩展汉化补丁 | Chinese localization patch for Claude Code VS Code extension

updated Jul 2026

plugins

1
@superbasedapp

Install SuperBased from inside your AI coding tool — Claude Code & Codex marketplaces, Gemini CLI extension, Goose, OpenCode, Cursor deeplink. Requires the observer binary (npm i -g @superbased/observer, or pipx install superbased-observer).

updated Aug 2026

claude-code-sessions

1
@craigstoller

Unofficial tool for Claude Code sessions on disk: make a session visible under your other Claude account on the same machine, or move one between project folders. Command line or GUI. Journaled, reversible, fails closed.

updated Aug 2026

CodeTails

1
@jangles-byte

Take Claude With You! — your real Claude Code sessions, all of them, on your phone. See and resume past conversations, watch tool calls stream live, over Tailscale.

updated Aug 2026

generate-commit-extension

1
@everton-dgn

VS Code and VSCodium extension that generates Conventional Commits messages from your staged diff using AI providers (OpenRouter, Kimi, GLM, MiniMax, Claude Code CLI, Codex CLI).

updated Aug 2026

patch-claude-code-font

1
@ludios

(LLM-authored) Script to patch your installed vscode Claude Code extension to use editor.fontFamily and editor.fontSize instead of Consolas with inconsistent sizes

updated Aug 2026

verbative-dist

1
@verbative

Release binaries for Verbative — voice control and a fully-local memory engine for the Claude Code CLI in VS Code. Hosts the on-device artifacts the extension and the verbative-memory packages install; no source code here.

updated Aug 2026

warrant-mcp

1
@rmanish2000-del

Write the rules for your AI agent once, in plain English. Deterministic code checks every tool call, and a Claude Code hook blocks what your rules forbid. Ships a Claude Skill that writes the policy with you.

updated Aug 2026

uxai-mcp-plugin

1
@IleanaMarcut

An extension of the UX+AI MCP. It makes the 101 methods easy to find and run with / commands.

updated Aug 2026

codex-pr-review-toolkit

1
@neonwatty

A Codex-native version of Anthropic's Claude PR Review Toolkit.

updated Aug 2026
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