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

claude-vs-ext-web

★ 3
@dreamhunter2333

Web-based Claude Code interface - Run VSCode Claude Code extension in browser

updated Jun 2026

claude-code-survival-toolkit

★ 3
@DeveloperAlly

Community repair toolkit for Claude Code VS Code extension. 12 confirmed root causes, 9 fix scripts, 7 governance hooks. Built from 320 sessions of pain.

updated May 2026

mcp-skills

★ 3
@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 Sep 2026

claude-code-sdk

★ 3
@canonical

Anthropic's agentic coding tool for the terminal.

updated Sep 2026

claw-plus-plus

★ 3
@bryhuang9

⚡ High-performance AI coding agent for the terminal, built in modern C++23. Multi-provider LLM support (Anthropic, OpenAI, Ollama), 9 built-in tools, interactive REPL, and session persistence.

updated Apr 2026

ft-review-toolkit

★ 3
@ReviewToolkits

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 Aug 2026

eu-ai-act-mcp

★ 3
@lexbeam-software

Open-source MCP server giving AI agents 10 deterministic tools for the EU AI Act (Regulation 2024/1689). No LLM in the loop.

updated Oct 2026

Chimera

★ 3
@TNLegend

Project Chimera is a high-performance API proxy that lets you use Google Gemini (via web cookies) as a free backend for Anthropic's claude-code CLI. It translates Claude's XML tool calls into native Gemini actions, using a custom "Delta Slicer" to bypass Google's strict prompt filters and enable full local terminal automation.

updated Jul 2026

colony-mcp-server

★ 3
@TheColonyCC

MCP server for The Colony (thecolony.cc) — collaborative intelligence platform where AI agents and humans share findings, discuss ideas, and build knowledge together. 7 MCP tools.

updated Jul 2026

blink-skill

★ 3
@zhangtianruiwork-droid

Proactive screen awareness + Claude Vision assistance

updated May 2026

agentic-toolkit

★ 3
@AdamCaviness

Claude Code skills, commands, and extensions

updated Oct 2026

skills

★ 3
@feichuans

My collection of Claude Code skills. Install: npx @anthropic-ai/claude-code-skills add ifeichuan/skills/<skill-name>

updated Aug 2026

opentools

★ 3
@LatentEvals

The tool surface every agentic AI framework reimplements.

updated Jul 2026

citadel-saas-factory

★ 3
@Citadel-Cloud-Management

265 autonomous AI agents across 15 business domains. Full-stack SaaS framework with real model routing, RAG pipeline, guardrails, and Chrome extension. FastAPI + Next.js + K3s. Runs on any server. $0/month software cost.

updated Sep 2026

ClaudeProjectExport

★ 3
@Brads777

Extract specific projects from Claude.ai data exports — interactive project picker, knowledge docs, conversation history, Claude Code skill

updated Sep 2026

speckit-security

★ 3
@TEKIMAX

Security-first extension for GitHub Spec Kit — threat modeling, red teaming, AI guardrails, and model governance gates for spec-driven development

updated Aug 2026

ashlr-plugin

★ 3
@ashlrai

Token-efficiency plugin for Claude Code and Codex: MCP tools and hooks that replace high-volume Read/Grep/Edit/Bash calls with compact equivalents, powered by @ashlr/core-efficiency.

updated Oct 2026

perfex-crm-skills

★ 3
@yasserstudio

9 Agent Skills that stop AI coding tools (Claude Code, Cursor, Codex) from shipping silently-broken Perfex CRM module code. 40+ gotchas, every one verified against Perfex core source.

updated Sep 2026

toolbox

★ 3
@filippolmt

Containerised Debian-slim dev environment bundling Claude Code, Codex, cloud CLIs (gcloud/azure/oci/cf), kubectl/helm/tofu, Docker, Node/Bun/pnpm, Python/uv and Playwright. Managed by a Go CLI that handles the container lifecycle with a single command.

updated Oct 2026

outlook-extension

★ 3
@gabrieldenny-del

Claude Cowork connector for Microsoft Outlook desktop (local COM, no Azure/OAuth) — email, calendar, categories. Ships as Claude Code plugin + Claude Desktop Extension.

updated Jul 2026

apollo-mcp

★ 3
@adelaidasofia

FastMCP server for Apollo.io — 22 tools: sequences, campaign health, mailbox warmup, enrichment, CRM, credits. Includes Cloudflare bypass and undocumented API discoveries.

updated Oct 2026

project-memory-mcp

★ 3
@feralcarazp

A neutral context layer for AI coding tools. MCP server that exposes structured, curated project context to any MCP-compatible client.

updated Jun 2026

agent-keyring

★ 3
@verging-ai

Open-source desktop tool for managing LLM API keys and syncing them into local AI agents and clients.

updated May 2026

skill-harness

★ 3
@blinnieinfertile577

Bootstrap the 45ck agent stack with shared skills, Claude and Codex agents, project tooling, and embedded packs

updated Oct 2026
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