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

8237entries
★ starsA–Z name

claude-best-practices

5
@AravindKurapati

A living knowledge base of Claude, Claude Code, skills, MCP, and agentic workflow best practices collected from practitioners and kept updated.

updated May 2026

humanizer-workbench

5
@puneethkotha

AI humanizer: CLI tool and Claude Code skill for rewriting AI-generated text into natural human writing.

updated Jul 2026

Lycheetah-Framework

5
@Lycheetah

AI alignment framework. Nine interdependent theories — CASCADE, AURA, LAMAGUE and six more — each mathematically proven, each converging on the same constants. Banach fixed points. Constitutional invariants. MCP extension for Claude Code. Built by one self-taught researcher. Open. Testable. Human.

updated Jul 2026

anty-framework

5
@VoxTechnologies

AI Workforce plugin for Claude Code — proactive sales & marketing strategy for startup founders. 24 domain knowledge skills, 10 commands, 4 AI agents. Integrates 15+ strategic frameworks.

updated Jul 2026

lauyer

5
@nikuscs

⚖️ Fast CLI for searching Portuguese court jurisprudence (DGSI) and legislation (Diário da República) – AI agent skill for Claude Code, Claude.ai, Codex, and any LLM agent. Parallel search, full text retrieval, markdown/JSON output.

updated May 2026

template-symfony-sveltekit

5
@tony-stark-eth

Opinionated full-stack template: PHP 8.4 + Symfony 8 + SvelteKit 2 + FrankenPHP + Docker + 10 PHPStan extensions + Claude Code. Production-ready quality tooling from commit zero.

updated Apr 2026

biz-skill-creator

5
@GarrusHuang

业务Skill全生命周期管理工具——通过深度需求分析创建、修改、测试业务Skill。基于 Anthropic skill-creator 扩展,支持领域知识积累、三维度需求深挖、接口收集、Mock测试、迭代改进。

updated Jun 2026

wordpress-skill

5
@arturseo-geo

Comprehensive WordPress skill for Claude Code — REST API, Gutenberg blocks, WooCommerce, RankMath/Yoast SEO, ACF custom fields, media management, multisite, migration, performance tuning, WP-CLI commands. By TheGEOLab.net

updated Apr 2026

claude-engineer-toolkit

5
@thitami

AI-powered toolkit for Claude Code that provides structured workflows, commands, and agents to automate planning, coding, testing, and shipping software.

updated Jun 2026

nimblebrain

5
@NimbleBrainInc

Self-hosted platform for MCP Apps and agent automations — tools, interactive UIs, scheduled runs, multi-agent delegation.

updated Jul 2026

love-stack

5
@on-deck-society

The most comprehensive free Claude optimization plugin. 170+ skills, 5 MCP servers, 3 Anthropic breakthroughs. Free forever.

updated Apr 2026

claude-code-starter

5
@barkleesanders

Production-ready Claude Code config: 35 agents, 48 skills, 21 commands, hooks, and permissions

updated Jul 2026

google-ads-copywriter

5
@jeevanbavandla

A Claude Code skill that writes complete Google Search ad copy packages — 15 RSA headlines, 4 descriptions, 6 sitelinks, 10 callouts, structured snippets & call extension — output as CSV.

updated Jun 2026

ndemo

5
@splitbrain

A claude skill to create a narrated demo video of a web application

updated May 2026

claude-config

5
@st4unch

Claude Code configuration - settings, hooks, skills, project memory

updated Jun 2026

session-to-obsidian

5
@hailanlan0577

Claude Code 会话记录自动归档到 Obsidian(SessionEnd/SessionStart hook)

updated Jul 2026

claude-on-a-leash

5
@adityaarakeri

Deterministic security guardrails for Claude Code. Six hooks that hard-block RCE, credential exfiltration, SSRF, and prompt injection before they execute. Plus an MCP server for every other agent.

updated Apr 2026

devkit

5
@5uck1ess

A deterministic development harness for Claude Code — MCP workflow engine, enforcement hooks, YAML workflows, and multi-agent consensus (Claude + Codex + Antigravity/Gemini)

updated Jun 2026

claude-code-decompiled

5
@alanisme

🔍 Deep research reports based on Claude Code source analysis: architecture, agent loop, tool system, system prompts, telemetry, permissions, MCP integration, context management, persistence, and hidden features.

updated Jul 2026

ashlrcode

5
@ashlrai

Multi-provider AI coding agent CLI. 30 tools, 15 skills, MCP support, autopilot mode.

updated Jul 2026

kincode

5
@LocalKinAI

AI coding assistant in Go. 9MB single binary, zero dependencies. MCP support, Soul files for custom AI personas. 10 built-in tools + sub-agents + web search + memory. The only Claude Code alternative with both MCP and Soul files.

updated Jul 2026

harnessbridge

5
@yitianlian

Portable agent harness configuration. Convert rules, skills, hooks, memory and MCP configs between Claude Code, Cursor, Windsurf, Copilot, OpenCode and Codex CLI.

updated Jul 2026

arch-compiler-ai-harness-in-action

5
@inetgas

This repo was built by using Claude Code and agent skills which are harnessed around the Architecture Compiler, a deterministic compiler turning constraints into reviewable architectural decisions with clear trade-offs and cost impact, based on 180+ curated design patterns. Refer to https://github.com/inetgas/arch-compiler for more details.

updated Apr 2026

claude-apd

5
@zstevovich

Agent Pipeline Development — enforced Claude Code development framework with pipeline gates, guard hooks, and memory system

updated Jul 2026
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