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

8236entries
★ starsA–Z name

second-pass

2
@HubWizard

Universal skill enhancement layer for Claude Code. Sees what your skill was trying to do, grades the gap, drives the rewrite.

updated May 2026

google-marketing-ops

2
@chjm-ai

Claude Code skill that orchestrates Google Ads + GA4 + GTM in one conversation — routes user intent, combines tools, and adds analysis on top of raw data.

updated May 2026

prompt-refiner-skill

2
@HenrikBrehm

Anti-bloat prompt linter for Claude Code, Cursor & ChatGPT. Flags prompt-engineering bugs against a stable rule catalog (PR001-PR-INJ03). Lint, don't rewrite. No framework imposition, no interview flow, no language switching.

updated Apr 2026

agent-skills-core

2
@ZroZoom

Project-agnostic Claude Code / multi-agent skills, slash commands, and CLAUDE.md template — extracted from a real Next.js + Supabase production codebase.

updated Jun 2026

skill-check

2
@JckJhns

Comprehensive testing and validation for Agent Skills. Quick, Standard, and Deep checks for structure, security, best practices, and more.

updated Jun 2026

skills

2
@ycdesu

Claude Code skill for stacked PRs using only native git and gh — no extensions or GitHub Stacked PRs feature required.

updated May 2026

agent-skills

2
@prizmad

Agent Skills for Prizmad — AI UGC video ad generation. Five publicly-discoverable SKILL.md packages covering the MCP server, REST API, OAuth flow, markdown content negotiation, and the product itself. Also served at https://prizmad.com/.well-known/agent-skills/.

updated Jun 2026

SkillNest

2
@leavestring

SkillNest(技能巢)—— 最懂 Claude Code 用户的技能发现平台。汇集 Superpowers、Anthropic Skills 等高星 Community Skills,卡片流浏览 + 实时搜索 + 分类筛选 + 图文详情,每个技能直达 GitHub 仓库。独创社区投稿系统:填写表单自动生成结构化 Issue,站长审核收录后全站可见。纯静态架构,零依赖,Fork 即部署 GitHub Pages,让好用的 Skills 被更多人发现。欢迎更多爱好者让更多好的skills被发现!!!

updated May 2026

ixbrl

2
@MaxSchoon

Vendor-neutral iXBRL (Inline XBRL) skill for AI agents — primary-source-validated reference material, scaffold templates, and Arelle validation scripts for SEC EDGAR / ESMA ESEF / UK FRC / Dutch SBR / EBA / EIOPA / IFRS / US-GAAP / EDINET / MCA filings.

updated Jul 2026

claude-quotas

2
@FruityMaxine

A Claude Code plugin that gives Claude a self-introspection tool for its own subscription quota — so it can warn you before a long task runs out of budget.

updated Jun 2026

cyberseguranca

2
@izaurogabriel-hash

Skill /cyberseguranca para Claude Code — doutrina, threat modeling, hardening (Cloudflare/Supabase/Astro), compliance (LGPD/ISO/SOC2), supply chain, IR, IA/LLM security e orquestração multi-agente. ~22k linhas, 38 arquivos.

updated Jun 2026

obsidian-theme-designer

2
@Ridingbittknightsservice6966

Design custom Obsidian themes visually in your browser with live previews. Build CSS styles through a guided workflow without writing code.

updated Jul 2026

strava-mcp

2
@davidmosiah

MCP server for Strava — bring your activities, segments, athlete data, and training history into AI agents via Model Context Protocol.

updated Jul 2026

claude-skills

2
@liks79

Research, career, finance, productivity and automation — 26 slash commands + 4 skills for Claude Code

updated Jul 2026

zafu-thesis-formatter-skill

2
@wjyxiaojiu-del

ZAFU本科毕业生论文格式修改skill

updated May 2026

super-bootstrap

2
@RockyHong

Claude Code plugin: one command scaffolds CLAUDE.md, picks skills/MCPs for your stack, and adds a route-aware workflow with doc-sync commit gate.

updated Jul 2026

paul-graham-skills

2
@WinterDDo

Paul Graham, distilled — 5 Claude Code skills + 6 principles from his essays

updated Jun 2026

distill

2
@geo-mena

Claude Code plugin recreating the Distill look — tokens, article UI kit, technical diagrams, voice rewrite, and slash commands.

updated May 2026

codex-oauth-automation-extension

2
@Sprucepinebonefish6364

Automate ChatGPT OAuth registration and login workflows with this Chrome extension supporting multi-step execution and integrated email verification services.

updated Jul 2026

DaA-left-side-trading-rookie

2
@Patrickristal

Claude skill for China A-share + HK trading: 6 capability modules backed by Tetlock's superforecasting framework. Strategist role only — never executes trades. AKShare-based, default Chinese output.

updated May 2026

claude-code-skills

2
@ozlar34

Claude Code skills I built for my own stack — Obsidian, Notion, capture/handoff, and session workflow utilities.

updated Jul 2026

linkedin-profile-rewriter

2
@joshua-burnell-1

A Claude skill that rewrites LinkedIn profiles against a target JD with rubric-based refinement. Grounded in real competitor profiles, scored across five dimensions, voice-preserving.

updated May 2026

skills

2
@sfrangulov

Agent skills installable via skills.sh

updated Jun 2026

rapor-skill

2
@hootbu

Turn your git commits into polished daily work reports in Turkish or English — a Claude Code skill.

updated May 2026
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