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

8281entries
★ starsA–Z name

create-chrome-extension

★ 2
@codyhxyz

Six skills that scaffold a Chrome extension, fill the listing copy, capture screenshots, set up Chrome Web Store OAuth, and orchestrate submission. Pairs with the cce-factory WXT template.

updated Sep 2026

cachly-mcp

★ 2
@cachly-dev

Solve it once. From then on, your AI knows. Experience for coding agents over MCP, EU-hosted. 124 MCP tools.

updated Oct 2026

claude-code-bridge-mcp

★ 2
@rahuljava2807

MCP server that pipes Claude Code session output into Claude Chat — no more copy-paste between tools

updated Oct 2026

matilha-skills

★ 2
@danilods

You lead. Agents hunt. Cognitive + methodological harness for AI-assisted software — 139 skills across 7 companion packs + composition layer. Cross-tool (Claude Code, Cursor, Codex, Gemini CLI).

updated Aug 2026

chem-agent

★ 2
@jincinga24-hue

Autonomous chemical engineering agent: LLM tool-use over RDKit, Antoine thermo, Python+scipy, arxiv literature. 23-problem benchmark across 10 ChemE subdomains.

updated Aug 2026

claude-code-toolkit-app

★ 2
@patty-png

The home for Claude Code. 2,400+ MCPs, skills, subagents, hooks, and plugins — plus courses, videos, and tutorials — in one searchable directory. Track your stack, copy install commands, ship faster.

updated Jul 2026

embedded-editor-for-claude-code

★ 2
@1vav

Embedded visual workspace for Claude Code — Excalidraw, tldraw, and Markdown with MCP tools and inline PNG previews

updated Jul 2026

agentic

★ 2
@igorilic

Cross-platform UI and chat for agentic pipeline orchestration — Tauri desktop, TUI, and VS Code extension sharing a Rust core. Drives Claude Code and GitHub Copilot CLI against GitHub+Issues or GitLab+Jira.

updated May 2026

agent-skills

★ 2
@Solonnikov

Public collection of agent skills — reusable capabilities, prompts, and workflows for Claude Code and other agentic coding tools.

updated Apr 2026

ClaudeVerse

★ 2
@IwuchukwuDivine

The Developer's Universe for Claude Code Mastery. An opinionated, open guide to workflows, extensions, token economics, and multi-agent orchestration with Claude Code.

updated Apr 2026

skill-vault

★ 2
@Synchronic-leafbud824

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

updated Oct 2026

callrail-mcp

★ 2
@pghdma

Model Context Protocol (MCP) server for the CallRail REST API v3: 57 tools for calls, leads, form submissions, trackers, tags and agency reporting, usable from Claude Code, Claude Desktop, Cursor or any MCP client.

updated Oct 2026

clinical-trial-design

★ 2
@wei-ai-lab

Claude Code plugin & MCP server for Phase 2/3 clinical trial design. 9 tools: single-primary (binary/continuous/PH+NPH survival), multi-hypothesis (co-primary, multi-population, Maurer-Bretz). Backed by gsDesign, gsDesign2, graphicalMCP. Word/PDF reporting, Monte-Carlo verification, 176-case benchmark corpus.

updated Jul 2026

spotify-mcp

★ 2
@llyfn

MCP server for the Spotify Web API — gives Claude and other AI assistants tools to search music, control playback, manage playlists, library, and podcasts.

updated Oct 2026

awesome-claude-universe

★ 2
@Najeebullah3124

Curated monorepo: 70+ Claude Code, MCP, skills & tooling snapshots + MANIFEST. For R&D and discovery

updated Oct 2026

insurancexdate-mcp

★ 2
@toddshaner

TypeScript MCP server (.mcpb Desktop Extension) for the InsuranceXDate workers'-comp prospect database and SERFF rate-filing API. 7 tools, full upstream schema coverage, production-grade error handling. Unofficial third-party client.

updated Aug 2026

claudegram

★ 2
@sanjar-x

Production-grade Claude Code plugin: control your personal Telegram via MTProto (Telethon). 120 typed MCP-tools, 9 resources, 7 prompts, 6 skills, 4-layer PreToolUse safety net, channel-push & permission relay

updated May 2026

hivemind

★ 2
@abderrahimghazali

Bridge Claude Code and Codex on the same machine — second opinions, brainstorms, and direct MCP tool access between two AI coding agents.

updated Jun 2026

google-marketing-ops

★ 2
@chjm-ai

Claude Code skill that orchestrates Google Ads + GA4 + GTM in one conversation — routes user intent, combines tools, and adds analysis on top of raw data.

updated May 2026

skills

★ 2
@ycdesu

Claude Code skill for stacked PRs using only native git and gh — no extensions or GitHub Stacked PRs feature required.

updated Jul 2026

product-ai-toolbox

★ 2
@Ludovic33Fr

A curated repository of agents and skills designed for Product Managers. It provides practical templates, workflows, and best practices to leverage AI effectively across discovery, delivery, and decision-making.

updated Sep 2026

codex-oauth-automation-extension

★ 2
@Sprucepinebonefish6364

Automate ChatGPT OAuth registration and login workflows with this Chrome extension supporting multi-step execution and integrated email verification services.

updated Oct 2026

mycase-mcp

★ 2
@RosenAdvertising

MCP server for MyCase — API coverage for law firm practice management.

updated Oct 2026

mcp-openai-images-audio

★ 2
@eduard256

MCP server exposing OpenAI image generation, image editing, and text-to-speech as tools for Claude Code and other MCP clients. Built with Python and FastMCP.

updated Aug 2026
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