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

8281entries
★ starsA–Z name

arch-render

★ 5
@dakhlallah

Preservation-first architectural intelligence for Codex: rendering, plan-to-3D, materials, reviews, documentation, and portfolios.

updated Sep 2026

writing-skills

★ 5
@Calliope-Editor

Augmentation-only Claude Agent Skills for fiction writers — editors, critique simulators, character work, and craft drills. Reads and critiques your manuscript; never ghostwrites.

updated Oct 2026

smartcompact

★ 5
@codeprakhar25

Human-in-the-loop context compaction for Claude Code — you pick which conversation turns survive, a SessionStart hook re-injects them after every compact/resume.

updated Jul 2026

Tool.Agent-Harness-Deploy

★ 5
@masteryee-labs

Self-deploying cross-tool AI harness — one canonical source deployed to Claude Code, Codex, Cursor, Devin, Antigravity & 9 more. Loop engineering, three-layer memory, worker personas, hooks, MCP, vault.

updated Jul 2026

model-router

★ 5
@smaroc

Automatic model router for Claude Code — a UserPromptSubmit hook that scores each prompt's complexity and recommends the right model (Haiku/Sonnet/Opus). Bilingual, configurable, 100% local.

updated Sep 2026

claude-codex

★ 5
@azalio

Claude Code, powered by your ChatGPT subscription. Keep your CLI workflow, skills, hooks, and MCP tools while using the Codex backend.

updated Oct 2026

janes-first-intern-copilot

★ 5
@jo1-yo

A Claude skill: land your first internship with no connections — concise resume, application system, founder cold emails.

updated Jul 2026

mv3-doctor

★ 5
@n0liu

Diagnose Chrome Manifest V3 extension pitfalls — and teach AI coding agents to avoid them.

updated Sep 2026

code-review-agent-mcp

★ 5
@frangelbarrera

AI code review agent MCP server. Reviews code like a kernel maintainer: blunt, technical, no sugarcoating. Detects bugs + OWASP Top 10 security vulnerabilities. 4 harshness levels. Anti-RLHF.

updated Oct 2026

agent-fieldbook

★ 5
@alessiomarcone

Source-backed skills that turn official Claude and Codex training into reliable daily workflows.

updated Sep 2026

screenshot-infographic-skill

★ 5
@Wanqiu12345

AI skill: 把一张截图或一段文字,自动生成一整套可直接发布的小红书/公众号教程图与信息图。晚秋简约风,纯排版离线渲染,支持 Claude Code / Codex / WorkBuddy

updated Sep 2026

lean-canvas-coach

★ 5
@xntj-ai

AI 教练带你走精益画布→揪关键假设→设计最低成本验证,可反复重跑 · Coach a founder through a Lean Canvas, pin the riskiest assumption, design the cheapest validation. Re-runnable.

updated Oct 2026

claude-code-notify

★ 5
@filiphric

macOS notification hook for Claude Code that focuses your terminal (Ghostty/Cursor) when you click it

updated Jul 2026

pravo-grammatika

★ 5
@sky-magenta

«Скилл грамматики для юриста»: проверка формы юридического текста (синтаксическая неоднозначность, пунктуация, область действия «и/или», границы сроков, анафора, деонтическая модальность) на праве РФ. Третий элемент тривиума грамматика·логика·риторика, парный к pravo-logika и pravo-ritorika. Показывает оба прочтения, выбор оставляет автору. MIT.

updated Oct 2026

Hermes-Mind-Skill

★ 5
@JustinGastby

Port Hermes Agent's self-improving skill loop to Cursor & Claude Code via native Hooks + Skills.

updated Jul 2026

marketing-brain-skill

★ 5
@fsbtactic-code

Portable marketing second brain for Codex, Claude Code, and Agent Skills with 502 sources for strategy, SMM, content, growth, CRO, and buyer psychology.

updated Aug 2026

Toutour

★ 5
@matt-ye

幫任何網站加上聚光燈導覽的 Claude skill:分析版面、訪談開發者、產生步驟並用 Playwright 逐步驗證。Claude skill that adds a verified spotlight onboarding tour to any website.

updated Sep 2026

cc-chrome-extension

★ 5
@TranHuyQn

Claude in Chrome, powered by your local claude CLI. Drive your real logged-in Chrome from Claude Code, or chat in a side panel while you browse. No claude.ai login, no intermediary server, and it never steals focus.

updated Sep 2026

mente-designer

★ 5
@eulucasduty

DNA de design de 20 sites premium — Lenis + GSAP/ScrollTrigger destilados em leis, calibres e 22 efeitos com codigo. Skill do Claude Code.

updated Aug 2026

prompt-engineering-skill

★ 5
@k-vaca

Research-grounded Agent Skill for writing professional LLM prompts — matches technique to model class, separates evidence from folklore.

updated Oct 2026

world-events-briefing

★ 5
@chenxihuang1028-a11y

Claude Skill: country / major-world-events news briefing from Wikipedia Current Events + GDELT (stdlib only, offline fixture mode)

updated Aug 2026

crypto-protocol-diagram

★ 5
@chenxihuang1028-a11y

Claude Skill: extract cryptographic protocol message flow from code, RFCs, ProVerif or Tamarin models into Mermaid + ASCII sequence diagrams

updated Aug 2026

better-tropes

★ 5
@fromfireside

A catalogue of AI writing tells, each with a plain rewrite, shared by Fireside. Drop it into a system prompt to stop LLM output reading like LLM output.

updated Sep 2026

kiben-check

★ 5
@myucakhr

発言が詭弁かどうかを4行で即答する Claude Code スキル。詭弁の特徴のガイドライン19条+論理学の誤謬で判定し、本来の論点と論点に戻す一言まで返す

updated Aug 2026
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