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

8253entries
★ starsA–Z name

fastlane-skill

20
@greenstevester

AI skill to setup and use fastlane to automate building and releasing your iOS and Android apps

updated May 2026

outlook-assistant

20
@littlebearapps

MCP server for Outlook email, calendar, and contacts — let your AI assistant manage your inbox directly from the conversation.

updated Jun 2026

vscode-agent-skill-ninja

20
@aktsmm

VS Code Extension for searching, installing and managing Agent Skills (SKILL.md) for GitHub Copilot, Claude Code and AI coding assistants

updated Jun 2026

rpikit

20
@bostonaholic

A Claude Code plugin implementing the Research-Plan-Implement (RPI) framework for disciplined software engineering.

updated May 2026

claude-lsp-servers

20
@yungweng

LSP plugin for Claude Code — TypeScript, Python, and Go code intelligence that actually works

updated May 2026

shipspec-claude-code-plugin

20
@jsegov

Spec Driven Development Plugin for Claude Code

updated Apr 2026

bettercallclaude

20
@fedec65

A powerful plugin for Claude Cowork Desktop, designed specifically for Swiss legal professionals. 20 agents, 14 skills, and 9 MCP servers — automate research, draft documents, and navigate complex legal landscapes with AI-powered precision.

updated Jun 2026

brightspace-mcp-server

20
@RohanMuppa

MCP server for Brightspace (D2L). Check grades, due dates, assignments, announcements, rosters, syllabus & course content via Claude, ChatGPT, Cursor, Windsurf, or any MCP client. Works with any school. npm: npx brightspace-mcp-server@latest

updated May 2026

Zakira.Imprint

20
@MoaidHathot

Ship AI Skills, custom instructions, and MCP server configs alongside your NuGet packages. Supports GitHub Copilot, Claude, OpenCode, Roo code, and Cursor.

updated Jun 2026

fsociety

20
@ogrodev

Multi-plugin marketplace for Claude Code offensive security plugins

updated May 2026

eodhd-claude-skills

20
@EodHistoricalData

Claude Code plugin for EODHD financial data — 150k+ tickers, 70+ exchanges, OAuth MCP server with 80 tools, 7 workflow skills, financial-analyst agent, 5 slash commands. MIT.

updated Jun 2026

better-email-mcp

20
@n24q02m

IMAP/SMTP email server for AI agents -- 6 composite tools with multi-account and auto-discovery

updated Jun 2026

writing-with-agents

20
@Jeffallan

Claude Code skill plugin implementing Betty Flowers' Madman-Architect-Carpenter-Judge writing framework with collaborative AI-human oscillation, SEO optimization, and multi-article content strategy.

updated Jun 2026

sanitize

20
@vxcozy

12-point pre-commit hook and Claude Code skill for blocking secrets, credentials, and sensitive data

updated May 2026

claude-cognis

20
@Lyzr-Cognis

A Claude Code plugin that gives your AI persistent memory across sessions using Cognis. Your agent remembers what you worked on - across sessions, across projects.

updated Apr 2026

faos-skills-marketplace

20
@frank-luongt

930+ AI-powered skills and 31 agent plugins for Claude Code, OpenAI Codex, Gemini CLI, GitHub Copilot, and Perplexity Computer. The largest open-source AI skills library.

updated May 2026

agentic-cortex

20
@albert-ying

A personal AI operating system built on OpenClaw/Claude Code, MCP servers, and structured markdown. Feedback RL, voice cloning, Screenpipe integration.

updated May 2026

applenotesmcp

20
@RodriguesJohn

An MCP (Model Context Protocol) server that lets AI assistants like Claude read, create, search, update, and delete your Apple Notes all through natural conversation.

updated Jun 2026

claudaborative-editing

20
@pento

An MCP server for real-time collaborative editing of WordPress posts between Claude Code and human editors in Gutenberg.

updated Apr 2026

QGIS-Claude-Skill-Package

20
@Impertio-Studio

19 deterministic Claude Code skills for QGIS/PyQGIS spatial analysis, map creation, geoprocessing, and plugin development

updated May 2026

yantrikdb-mcp

20
@yantrikos

Persistent cognitive memory for AI agents — drop-in MCP server for Claude Code, Cursor, Windsurf. Temporal decay, contradiction detection, knowledge graph, autonomous consolidation. Backed by the YantrikDB Rust engine. Install: pip install yantrikdb-mcp.

updated Jun 2026

strategy-mcp

20
@sohaibt

strategy-mcp is an open source MCP server that exposes professional-grade product strategy frameworks as structured tools. Any MCP-compatible AI assistant (Claude, Cursor, Cline) can install it and immediately get access to structured strategy analysis, RICE, JTBD, competitive positioning, assumption mapping, and more.

updated May 2026

marketing-skill

20
@arturseo-geo

Marketing skill for Claude Code — campaigns, funnels, ad copy (Google/Meta/LinkedIn Ads), personas, positioning, go-to-market strategy, StoryBrand/$100M Offers frameworks, UTM tracking, A/B testing, CRO, email marketing. By TheGEOLab.net

updated May 2026

claude-code-new-features-early-2026

20
@coleam00

Demo project showcasing new Claude Code features from early 2026 including custom agents, skills, hooks, and sub-agents

updated May 2026
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