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

claude-skill-aesthetic-foundations

5
@caoxg

A Claude Code skill that injects aesthetic principles from painting, photography, graphic design, and Eastern visual tradition into UI/design decisions.

updated May 2026

instrument-claude

5
@AstraBert

Hooks-based, OTel-compatible observability for Claude Code

updated May 2026

fb-ad-video-studio

5
@ai-agents-for-agencies-coaches

High-converting FB/IG/TikTok video ads built as code in Claude Code — HyperFrames compositions with a battle-tested ad structure, audio pipeline, and reverse-template workflow.

updated May 2026

anthropic-docs

5
@xiaolai

Auto-updated 8-skill reference for the Anthropic + MCP doc ecosystem (claude-code, claude-agent-sdk, anthropic-api, anthropic-platform-features, claude-connectors, claude-cowork, mcp-spec, anthropic-pulse). Refreshes every 30 min.

updated Jun 2026

cc-suite

5
@xiaolai

One plugin to bridge and delegate across Claude Code, Codex CLI, and Gemini CLI — single-source AGENTS.md, shared skills, mirrored hooks and MCP servers, and full Claude↔Codex bidirectional delegation.

updated Jun 2026

claude-config-auditor

5
@emreyildirim

Non-destructive linter and cost auditor for Claude Code's .claude/ and CLAUDE.md — measures token cost, audits agent/skill quality

updated May 2026

jamshid

5
@PapaDanielVi

Jamshid: CLI tool for managing multiple Claude Code profiles. Switch between personal Anthropic, enterprise keys, and OpenRouter configurations across projects.

updated May 2026

auto-itera

5
@clfhaha1234

Autonomous experimentation engine for AI engineering decisions — runs as a Claude Code skill. Define a goal + candidates + threshold, get a defensible ship-or-kill verdict in hours.

updated Jun 2026

villagesql-skills

5
@villagesql

Agent skills for VillageSQL - gemini-cli-extension; claude-code-plugin

updated Jun 2026

cairn-score-skill

5
@cairnscore

Claude Code skill that invisibly rates every external resource (WebFetch / WebSearch / MCP / curl) via PostToolUse hooks. Two rater backends: Anthropic API key or claude.ai subscription via 'claude -p'.

updated Jun 2026

next16-claude-starter

5
@textura-agency

AI-first Next.js 16 starter for animation-heavy sites, wired with an Obsidian vault & Claude Code hooks

updated May 2026

google-go-style

5
@cicdteam

Claude Code marketplace hosting the google-go-style skill — a digest of the Google Go Style Guide.

updated May 2026

lean-code

5
@EA-Studio-SHARK

🔧 AI Coding Agent Token Optimizer | Skills for Claude Code, Cursor, Windsurf, Codex | Save 40-80% tokens & costs | 省Token神器

updated May 2026

revops-skills

5
@elijeangilles

Audit your Salesforce RevOps. Then fix it. A Claude Agent Skills pack for Salesforce admins and RevOps practitioners.

updated Jun 2026

clover-public

5
@fourleafai

Open-source Claude Skill + MCP integration for job search and interview prep. Live job data, role-specific interview intel, voice mock interviews on four-leaf.ai.

updated May 2026

pi-ide

5
@ldelossa

A pi extension for integrating with IDE. Based on the claude code ide integration protocol

updated Jun 2026

scientific-research-helper

5
@NguyenAn2812

Claude Skill for scientific research, thesis, and academic paper writing. Analyzes documents, provides detailed feedback, suggests structural improvements, citations, and academic language enhancement.

updated May 2026

aleabito-serenity-skills

5
@lanfuli

Claude/Codex agent skills distilled from @aleabitoreddit (Serenity)'s full public archive — track her, analyze like her, anticipate her next focus. Bilingual 中文/English.

updated Jun 2026

claude-rx

5
@alsgur9865-sketch

Audit how well Claude Code followed your CLAUDE.md — and prescribe fixes (promote to hook, delete dead rules)

updated Jun 2026

claude-workflow-v2

4
@Putra213

🚀 Build efficient workflows with the Claude Code plugin, offering specialized agents, skills, and hooks for any software project.

updated Jun 2026

geneius

4
@aaronwtr

Geneius is a powerful command-line tool leveraging Anthropic AI's Claude API to help you search through scientific literature and extract evidence for disease-gene associations.

updated Aug 2024

summarizer

4
@amscotti

Summarizer is a command-line tool that generates comprehensive summaries of articles and other text-based content.

updated Feb 2026

claude-large-git-diff-changelog-processor

4
@VicVibesPL

The Large Git Diff Changelog Processor is a Python-based tool designed to efficiently process and summarize large git diff changelog files using the Claude 3.5 model (claude-3-5-sonnet-20240620) via the Anthropic API. It splits large diffs into manageable chunks, generates concise summaries, and compiles the results into an easy-to-read format.

updated May 2025

claude-forge

4
@immacualate

Transform Claude Code into a complete development environment for efficient coding and project management.

updated Jun 2026
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