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

8236entries
★ starsA–Z name

mapguard

2
@alexh-scrt

mapguard is a CLI security tool that scans npm packages and published JavaScript/TypeScript bundles for accidentally included source map (.map) files that reference or embed original source code. Inspired by real-world incidents like Anthropic's accidental Claude Code source leak via a map file in their npm package, mapguard analyzes local director

updated Apr 2026

langfuse-claude-code-plugin

2
@pdhoolia

High-fidelity Langfuse tracing hook for Claude Code — captures multi-step tool-use loops, thinking blocks, and token usage with properly nested observations.

updated Jun 2026

skill-creator-plus

2
@yaniv-golan

Based on Anthropic's skill-creator — with bug fixes, working Cowork support, and official best practices baked in. Claude skill for creating, testing, and improving other Claude skills.

updated Jul 2026

mcp-skills

2
@theYahia

40+ AI skills for MCP servers covering Brazil/MENA/Gulf/Africa/SE Asia/CIS — workflows for e-commerce, payments, HR, marketing. Part of WWmcp ecosystem.

updated Jun 2026

inside-claude-code

2
@Luxshan2000

🔍 Inside Claude Code — Architecture Deep Dive | Flow Diagrams, UML, Sequence Diagrams | How Memory Shrinking, Tool Execution, Permissions & MCP Work Under the Hood

updated Apr 2026

visual-annotator

2
@wernerstrauch

Chrome extension to annotate any web page, capture screenshots & console logs, and copy structured markdown — built for AI coding agents like Claude Code, Cursor, Copilot, and more.

updated Apr 2026

wechat-writer

2
@mosslive1314-hue

AI 驱动的内容创作助手 | 基于 Claude Skill 架构 | 支持朋友圈/公众号/多平台适配 | 跨平台兼容 CoPaw/Claude Code

updated Apr 2026

ft-review-toolkit

2
@devdanzin

A Claude Code plugin for analyzing and migrating CPython C extensions to free-threaded Python (PEP 703). Finds thread-safety bugs, plans migrations, and triages ThreadSanitizer reports.

updated Jun 2026

claude-agent-toolkit

2
@Zchary1106

🧰 Hooks, skills & tools for Claude Code — undo, behavior control, and more. Built for Claude Code, compatible with other AI coding agents.

updated Jun 2026

claude-skills

2
@j4rk0r

Curated high-quality skills for Claude Code — skill-advisor and more

updated Jul 2026

jiaoben

2
@1-SKILL

短视频脚本工坊 — 5分钟出完整脚本,产能提升5倍,完播率翻倍

updated Jul 2026

wechat-public-monitor

2
@baixobai

Claude Code Skill - 微信公众号文章智能查询。一句话获取文章内容,支持:个人资讯速览、主题研究分析、Agent自动化日报、OpenClaw定时推送、企业舆情监控、竞品动态追踪。无需复制链接,直接对话式访问。

updated Jul 2026

mcp-probe

2
@Incultnitollc

MCP server diagnostics — CLI + TypeScript library. Tests every tool, resource, and prompt, then scores health. Published on npm as @incultnitollc/mcp-probe.

updated Jul 2026

claude-familiar

2
@yaniv-golan

Claude Familiar — customize the Claude Code companion: personality, mood, lore, MCP tools, local reaction server, optional binary patch.

updated May 2026

claude-apex

2
@YousefNabil-SOC

Public mirror + teaching install of my Claude Code environment: 1,276 skills, 185 agents, 235 commands, 8 wired MCP servers, three-layer auto-routing (10 CARL domains). Curated original core + the open plugin/marketplace ecosystem, all credited. MIT.

updated Jun 2026

wechat-writer-skill

2
@huatianwan

Claude Code skill for writing WeChat public account articles (公众号爆款文章写作技能)

updated Jun 2026

Loom

2
@Nickalus12

Loom: Weave parallel intelligence into your terminal. An advanced multi-agent orchestrator for Claude Code and Gemini CLI. Loom spins up 22 specialized subagents in parallel—from security auditors to SEO experts—allowing them to debate, debug, and synthesize complex codebases in persistent sessions. gemini-cli-extension

updated Apr 2026

skillmatch-mcp

2
@jarmstrong158

Claude-powered MCP server for job fit analysis. Compares your resume, GitHub portfolio, and profile against job descriptions. Built for people who prove skills through work, not credentials.

updated Jul 2026

CodeLLM

2
@entity12208

Advanced AI coding agent for the terminal — built 100% by Claude Code. Multi-provider (Anthropic, OpenAI, Ollama, llama.cpp), 30+ tools, interactive CLI.

updated Jun 2026

windsurf-mcp

2
@TSchonleber

MCP server + Windsurf extension for real-time IDE collaboration with Claude Code

updated Apr 2026

claudhq.com

2
@theluckystrike

Claude Prompt Library -- 30+ ready-to-use prompt templates for coding, writing, analysis, and business. Search, filter, copy, and save favorites. Free browser-based prompt engineering tool, no sign-up required.

updated Jul 2026

creative-context

2
@tarshaa

Your saved Pinterest pins, searchable by Claude.

updated Apr 2026

agentic_mp_dualrag

2
@chkao831

Fed MPR agentic chat is a demonstration of agentic dual-RAG using Anthropic Agent Skills over Federal Reserve Monetary Policy Report material: a Streamlit UI talks to a FastAPI backend where Claude answers questions by calling allowlisted tools only—Chroma for semantic chunk search and Oxigraph for SPARQL over an RDF knowledge graph.

updated Apr 2026

Nexus

2
@kronosderet

Local-first metabrain plugin for Claude Code. 29 MCP tools · Knowledge Graph + blast-radius + Conflicts resolution · Continuous Handover (live per-project cards) · sliding fuel model · ambient-telemetry hook · optional LM Studio Overseer. Zero cloud deps.

updated May 2026
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