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

claude-code-hooks-multi-agent-observability

1.5k
@disler

Real-time monitoring for Claude Code agents through simple hook event tracking.

updated Aug 2026

failproofai

1.5k
@FailproofAI

Observability and enforcement for AI agent harnesses. Capture every run and runtime reliability with policy enforcement. 40 built-in policies, a local dashboard, no account required with a generous free cloud plan

updated Aug 2026

claude-fuer-deutsches-recht

1.5k
@Klotzkette

⚠️ Experimentelle Skill-Sammlung für deutsches Recht (Arbeits-, Gesellschafts-, Insolvenz-, Datenschutz-, Prozessrecht u.a.) – inzwischen verbessert und im Alltag getestet, aber weiterhin Experiment. Bitte selber ausprobieren, Issues/PRs willkommen! Keine Rechtsberatung. Mandatsgeheimnis (§§ 203/204 StGB, § 43e BRAO), DSGVO, US-Transfer, KI-VO & Co

updated Aug 2026

mcp-server-qdrant

1.5k
@qdrant

An official Qdrant Model Context Protocol (MCP) server implementation

updated Aug 2026

cc-safety-net

1.5k
@kenryu42

An AI coding agent guardrail — a CLI hook that blocks destructive git and filesystem commands and secret file access before they execute. Supports Amp Code, Antigravity CLI, Claude Code, Codex, Copilot CLI, Cursor, Gemini CLI, Grok Build, Hermes Agent, Kimi Code, OpenClaw, OpenCode, and Pi.

updated Aug 2026

paper2code

1.5k
@PrathamLearnsToCode

Agent skill to turn any arxiv paper into a working implementation

updated Aug 2026

ADR

1.5k
@uber

ADR secures enterprise AI agents through observability, security benchmarking, and threat detection. Deployed at Uber.

updated Aug 2026

rocketmq-rust

1.5k
@mxsm

🚀Apache RocketMQ build in Rust🦀. Faster, safer, and with lower memory usage. ⭐ Star to support our work❤️!

updated Aug 2026

data-api-builder

1.5k
@Azure

Data API builder provides modern REST, GraphQL endpoints and MCP tools to your Azure Databases and on-prem stores.

updated Aug 2026

gortex

1.5k
@zzet

High-performance code-intelligence engine for AI agents and IDE, supports 257 languages, multi repositories, based on graph, with access via CLI, MCP Server, and API. AI coding agents teammate - expose only needed information, cutting token usage up to 50x. 100% local. Discord: https://discord.gg/39MFHu3J5d

updated Aug 2026

global-stock-data

1.5k
@simonlin1212

US stock market data for AI coding assistants — zero-auth, official sources. CBOE options with full Greeks + 0DTE flow, FINRA market-wide short volume, SEC EDGAR filing stream, and a free market-wide screener. 13 layers, 30+ endpoints, 11 sources. Every source labeled with its compliance tier.

updated Aug 2026

OpenOSINT

1.5k
@OpenOSINT

AI-powered OSINT agent with interactive REPL, MCP server, and CLI. 19 tools. Works with Claude, GPT-4, or local models. For authorized security research only.

updated Aug 2026

npcpy

1.5k
@NPC-Worldwide

The python library for research and development in NLP, multimodal LLMs, Agents, ML, Knowledge Graphs, and more.

updated Aug 2026

cli-continues

1.5k
@yigitkonur

resume any AI coding session in another tool — Claude Code, Copilot, Gemini, Codex, Cursor

updated Aug 2026

agmsg

1.5k
@fujibee

Cross-vendor messaging for CLI AI coding agents — let Claude Code, Codex, Gemini & Copilot talk to each other in one team. Bash + SQLite, no daemon, no framework.

updated Aug 2026

agtx

1.5k
@fynnfluegge

🏄🏼‍♂️ The blackboard for coding agents - agentic development environment for claude code, codex, cursor, opencode, grok and more.

updated Aug 2026

phantom

1.5k
@ghostwright

An AI co-worker with its own computer. Self-evolving, persistent memory, MCP server, secure credential collection, email identity. Built on the Claude Agent SDK.

updated Aug 2026

OpenChatCut

1.5k
@0xsline

Open-source, local-first conversational AI video editor with a professional multi-track timeline, Agent Skills, MCP integration, and Remotion rendering.

updated Aug 2026

ralphex

1.5k
@umputun

Extended Ralph loop for autonomous AI-driven plan execution

updated Aug 2026

TokenTracker

1.5k
@xiufengsun

Local-first AI token usage & cost tracker for 31 coding tools incl. Claude Code, Codex, Cursor, Gemini & DeepSeek Harness—with native apps. Never reads prompts.

updated Aug 2026

mcp-gsc

1.5k
@AminForou

Google Search Console Insights with Claude AI for SEOs

updated Aug 2026

ClaudeBar

1.4k
@tddworks

A macOS menu bar application that monitors AI coding assistant usage quotas. Keep track of your Claude, Codex, Antigravity ,and Gemini usage at a glance.

updated Aug 2026

huashu-skills

1.4k
@alchaincyf

花叔全部开源 Agent Skills 总目录:16 旗舰 + 14 人物视角 + 22 内置共 52 个 skill,分层分类 + AI Agent 安装协议 + 机器可读 skills.json + 更新检查机制

updated Aug 2026

evo

1.4k
@evo-hq

turns your codebase into an autoresearch loop — discovers what to measure, instruments the benchmark, then runs tree search with parallel subagents.

updated Aug 2026
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