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

hermes

1
@polleoai

Claude chat for Obsidian — read and edit vault files, run tools via the Anthropic API.

updated Apr 2026

ai-agent-config

1
@casoon

Shareable baseline configuration for Claude Code and Codex — global instructions, subagents, and skills in a single tree, symlinked into each tool's config dir.

updated Aug 2026

claude-data-reporter

1
@ps-cmd777

AI-powered CSV analysis CLI. Claude tool-use API generates statistical insights, charts, and Markdown reports from any CSV.

updated Jul 2026

AI_Code_Explainer

1
@Geetanjali1310

AI-powered CLI tool that analyzes Python files and explains every function in plain English using the Anthropic Claude API. Built with Python, Click, and Streamlit.

updated Apr 2026

arithma

1
@farchanjo

The Ultimate LLM Calculator Engine — 87 precision math tools via MCP. Pure Rust, zero C deps, arbitrary-precision arithmetic, finance, electronics, networking, unit conversion.

updated Jul 2026

CommentStyler-AI

1
@RylanHexx

A Visual Studio Code extension made for Vibe Coders so that they can easily understand all the giberish AI models put in their code.

updated May 2026

claude-code-context-tracker

1
@louispfeiffer

Status line extension for Claude Code showing context usage with proactive hints

updated Apr 2026

wingman-x

1
@stone16

AI Twitter/X reply bot that drafts voice-matched replies from your Obsidian knowledge base — human-in-the-loop, 100% local. Chrome extension + local daemon for Claude Code, Codex & any MCP agent.

updated Jul 2026

omnifocus-mcp

1
@uthark

MCP for Omnifocus

updated Jun 2026

skill-vault

1
@Synchronic-leafbud824

Organize, secure, and find Claude Code skills in one vault for easy reuse

updated Aug 2026

claude-skill-check-vscode

1
@MukundaKatta

VS Code extension that lints Claude Code SKILL.md files inline. Editor companion to the claude-skill-check PyPI package.

updated Jun 2026

quotemate-nz

1
@Xiaoyan43

AI-powered quoting tool for NZ trade businesses — Next.js / TypeScript / Supabase / Anthropic SDK, deployed on Vercel.

updated Aug 2026

ai-agents

1
@Claws-ZH

AI agent fleet — devops, finance, media, office, social. Shared Anthropic Claude API loop, domain-specific tools.

updated Apr 2026

kainclaw

1
@cain0501

Open-source desktop AI agent client with MCP, tools, multi-provider support, design workflows, and image workflows.

updated Jul 2026

MCP-Chatbot

1
@thevaginazz

CLI-based MCP chatbot built with FastMCP Python SDK and Anthropic Claude API. Includes custom document read/write tools using Model Context Protocol architecture.

updated Jul 2026

claude-code-from-scratch

1
@Alihusn3392

Build Claude Code from scratch with a step-by-step tutorial in TypeScript and Python for learning agent coding tools

updated Aug 2026

claude-code-prompts

1
@Birdcherrytreemurdermystery747

Build Claude Code prompt templates for AI coding agents, with system prompts, tool prompts, memory, and multi-agent coordination

updated Aug 2026

claude-code-available-tools

1
@AndreaBonn

Your Claude Code setup is powerful, but hard to see at a glance. This tool fixes that. A fast, interactive TUI that scans your global and project configurations, showing every slash command, subagent, skill, MCP server, hook, and env variable with live filtering and auto-refresh. Zero config required.

updated Jul 2026

minimal-agent

1
@codereindeer-dev

AI agent from scratch in a single Python file: Claude tool-use loop, MCP, long-term memory, sub-agents, lifecycle hooks. Each commit adds one concept. No LangChain.

updated Aug 2026

claude-code-inspector

1
@nemone81

Chrome extension + local Node.js bridge that lets you visually pick any DOM element on a page and dispatch a natural-language prompt to Claude Code.

updated Aug 2026

mcp-doc-assistant

1
@Bharathi-vbr

MCP document assistant with FastMCP server and Python client — supports reading and editing documents via Claude-compatible tool calls using the Model Context Protocol.

updated Apr 2026

claude-power-skills

1
@rabiinfrangible920

Boost Claude Code with 20 power-user skills for session management, multi-agent work, testing, and better estimates

updated Aug 2026

claude-studio

1
@Sowhost700

Build Claude AI apps with a unified dev stack for code, prompts, tools, tests, and local workflow

updated Aug 2026

claude-a2a

1
@oriolrius

A2A-protocol bridge for two Claude Code agents communicating via MCP (Google Agent2Agent over JSON-RPC, exposed as stdio MCP tools).

updated May 2026
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