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

8261entries
★ starsA–Z name

jgs-magic-sysmlv1-pro

★ 1
@jgsystemsconsulting

Licensed pro-extension JAR for the JGS SysML v1 MCP Bridge. Unlocks write-tier and pro model tools for AI agents in CATIA Magic.

updated Sep 2026

mb-al-ai-toolkit-cc

★ 1
@mbaic

Custom Claude Code plugin with an autonomous agent and 7 rules for AL development in Business Central Per-Tenant Extensions.

updated Aug 2026

jobTracker_browserExt

★ 1
@adevcalledkyle

Chrome extension designed to allow users ability to capture job from seek & linkedin. Update status and view stats in the jobs you capture and the

updated Jul 2026

Agentic-Cybersecurity-Toolkit

★ 1
@elhaddajiOtmane

A repository combining skills and methodologies from superpowers, claude-code-security-review, Anthropic-Cybersecurity-Skills, theHarvester, and hackingtool for AI agents.

updated Jun 2026

ResearchX

★ 1
@xingguangYan

ResearchX — AI Research Operating System. Literature-driven AI research assistant for full scientific lifecycle.

updated Jun 2026

pi-dynamic-workflow

★ 1
@mbenetti

Pi extension to built with pocketflow dynamically workflows. Inspired on Anthropic's dynamic harness: https://claude.com/blog/a-harness-for-every-task-dynamic-workflows-in-claude-code

updated Jun 2026

ember-browser

★ 1
@Wrenbjor

Chrome extension + local MCP server that lets any AI (Claude Code, Gemini CLI, or your own local LLM) drive your real browser session — no Playwright, no separate profile. Screenshots, page snapshots, clicking and typing with a visible cursor, plus a side-panel chat assistant for any OpenAI-compatible local model (Ollama, LM Studio, vLLM).

updated Jun 2026

sufficit-vscode-symposium

★ 1
@sufficit

Symposium (συμπόσιον) — VS Code extension hosting dialogue sessions with multiple AI agent CLIs (Claude Code, Codex, Copilot)

updated Oct 2026

mcp-security-scanner

★ 1
@lorbeere711

The npm-audit for MCP servers: scan AI agent tools for dangerous permissions, prompt injection, and data exfiltration risks.

updated Jun 2026

ai-setup-sync

★ 1
@olekpuchka

VS Code extension that syncs AI setup files and MCP configs (Claude Code, Copilot, Cursor, Codex, Antigravity and more) from a GitHub repo into every project automatically.

updated Oct 2026

feishu-cc-toolkit

★ 1
@xueyongcheng

Companion layer for the Feishu <-> Claude Code bridge: make it work behind a proxy (proxy-split), a /ctx context-usage readout, and an ops playbook. Not a fork.

updated Aug 2026

telegram-mcp-claude

★ 1
@TAIPANBOX

MCP server giving Claude full Telegram tools (read/send/edit/pin/react/files)

updated Oct 2026

shopify-app-builder

★ 1
@Mohamed-Kottb

Production Shopify app-building playbook (Claude Code skill): scaffolding, managed-install auth, webhooks/GDPR, GraphQL Admin API, extensions, billing, hosting, secrets/encryption, multi-tenant isolation, external-API sync, testing & App Store review. Pinned to June 2026.

updated Sep 2026

pg-extension-lab

★ 1
@ysys143

A harness for testing, benchmarking, and tuning PostgreSQL extensions in an isolated, reproducible environment.

updated Aug 2026

claude-slack-daemon

★ 1
@xingbuilds

Reach your own Claude Code from a Slack DM — local brain, your tools & memory, Socket Mode, single-owner. MIT.

updated Jun 2026

mcp-portal

★ 1
@infinition

Context teleportation protocol and shared memory bus for AI assistants.

updated Aug 2026

DedupeAI

★ 1
@riteshekbote

Burp Suite (Montoya) extension: dedupe HTTP history into an AI-ready unique feed, tag attacker/victim by listener port, and ship the set to Claude Code for IDOR/BOLA testing.

updated Aug 2026

claude-stall-tools

★ 1
@TJ11000

Honest, unofficial tools to see and contain the Claude Code tool-call stall / phantom-output bug. Not a fix — a detector and a seatbelt.

updated Sep 2026

agent-extension-api

★ 1
@abolfazl-moeini

omprehensive developer documentation for extending VS Code, Cursor, Claude Code, OpenAI Codex, Anthropic Claude, xAI Grok, and MiniMax via Skills, MCP, and plugins.

updated Jun 2026

CCA-Trainer

★ 1
@AdrianKnudsen

CCA Trainer: A practice tool for two of the exams in Anthropic's Claude Certification Program.

updated Sep 2026

pi-model-router

★ 1
@Davidcreador

Dynamic, task-phase model routing for Pi.

updated Jun 2026

ai-cli-cheatsheet-extension

★ 1
@jindawn

Browser extension for offline AI CLI cheatsheet — Claude Code, Codex, Gemini, OpenCode shortcuts & commands, with auto-add via Claude Code

updated Jul 2026

odoo-pulse

★ 1
@minhhq-a1

An AI business analyst for your Odoo ERP — one-call reports with verdicts, over MCP

updated Aug 2026

Claude-Code-Skills-Custom-DevTools-Pack

★ 1
@Mattakushi432

A curated pack of custom Claude Code skills for developers — installable as a Claude Code plugin marketplace.

updated Oct 2026
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