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

8250entries
★ starsA–Z name

claude-usage

2
@ScriptSmith

A GNOME Shell extension that displays Claude AI usage statistics and Claude Code session activity in your top bar

updated Apr 2026

source-of-truth-creator

2
@frmoretto

Claude skill & templates for creating epistemically honest Source of Truth documents. Prevents 6 failure modes: unqualified headers, unmarked estimates, self-assessment bias, absence-as-proof claims, illustrative-as-data, staleness. Companion to Clarity Gate.

updated May 2026

obsidian-project-assistant

2
@ali5ter

📓 Claude Code skill and agent for automatic project documentation in Obsidian

updated May 2026

go-llm

2
@Dragon-Born

Developer-friendly Go SDK for LLM apps: OpenAI, Anthropic, Gemini, Ollama, Azure OpenAI + 200+ models via OpenRouter. Fluent builder API with tools/function calling, agents, structured output, streaming, vision/PDF, audio, embeddings, retries, validation, and cost tracking.

updated Dec 2025

claude-humanlayer-extension

2
@franciszver

A VS Code extension inteded for Windows users who use Claude, that syncs HumanLayer’s Claude command packs directly into the Claude Code extension. Automatically fetch, install, and update HumanLayer’s .claude/commands from GitHub with validation, conflict detection, and a clean UI.

updated Dec 2025

claudekit

2
@Nnnsightnnn

Context system for Claude Code with memory management, skills, hooks, and pain point tracking.

updated May 2026

edgar-change-interpreter

2
@cmdrvl

Claude skill for identifying material changes, silent risks, and interpretation traps in SEC filings (10-K, 10-Q, 8-K). Built by CMD+RVL.

updated Mar 2026

claude-code-system-3-thinking

2
@jimmc414

Implementation of System 3 (meta-cognitive layer) from the Sophia paper as a Claude Code extension for persistent memory and self-improvement

updated Mar 2026

data-analytics-claude

2
@donparay114-code

Complete Claude Code configuration for data analytics, ML, and AI development workflows with 12 specialized sub-agents and 16 official Anthropic skills

updated Jan 2026

claude-code-tools

2
@ADWilkinson

14 agents, 11 skills, 2 hooks for Claude Code. Confidence scoring, anti-patterns, framework-agnostic.

updated Apr 2026

vibe-diary

2
@gaupoit

Claude Code hooks that capture coding sessions and generate Developer Diary blog posts using AI

updated Feb 2026

claude-code-settings-gui

2
@Lumara-Technologies-LLC

Visual dashboard for managing Claude Code configuration - rules, skills, hooks, agents, and more

updated May 2026

33-strategies-claude-code-starter-kit

2
@33-Strategies

Pre-configured Claude Code infrastructure with production-ready commands, agents, and hooks for AI-assisted development

updated Apr 2026

markdown-lsp

2
@zircote

Claude Code plugin for Markdown development with marksman LSP and markdownlint hooks

updated Mar 2026

kotlin-lsp

2
@zircote

Claude Code plugin for Kotlin development with kotlin-language-server and ktlint hooks

updated Mar 2026

scala-lsp

2
@zircote

Claude Code plugin for Scala development with Metals LSP and scalafmt hooks

updated Apr 2026

yaml-lsp

2
@zircote

Claude Code plugin for YAML development with yaml-language-server and yamllint hooks

updated Mar 2026

claude-parts

2
@redwoodresearch

A collection of shared hooks, mcp servers, and skills for claude code

updated Jan 2026

claude-code-tutorials

2
@jeremypeters

Hands-on tutorials for mastering Claude Code features: hooks, skills, agents, MCP servers, and more

updated May 2026

Learn-Claude-Code

2
@kenken64

This is the main document for the curriculum of learning Claude Code. It outlines a comprehensive learning path for mastering Claude Code - Anthropic's command-line tool for agentic coding.

updated Apr 2026

claude-skill-flaky-test-detector

2
@wrsmith108

Claude Code skill for detecting flaky test patterns that cause intermittent CI failures

updated Apr 2026

claude-skill-version-sync

2
@wrsmith108

Claude Code skill for detecting and synchronizing Node.js version specifications across project files

updated Apr 2026

skill-viewer

2
@leweii

Chrome extension to view and summarize Claude Code skills on GitHub

updated May 2026

patchpilot-cli

2
@ProduktEntdecker

Security scanner for vibe coders - Claude Code hook that checks packages before installation

updated Apr 2026
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