The Ultimate Collection of 883+ Universal Agentic Skills for AI Coding Assistants — Curated by Rootcastle Engineering & Innovation (REI) | Batuhan Ayrıbaş
Rootcastle is an international technology company that unifies engineering disciplines under a single architecture. With our software and R&D center in Estonia integrated with manufacturing, hardware development, and engineering capabilities in Turkey, we develop reliable, flexible, and scalable technologies.
Our expertise spans software development, PCB & hardware design, embedded systems, IoT & GPS telematics, data security, 3D manufacturing, rapid prototyping, and e-commerce integrations. This infrastructure serves industries from logistics and manufacturing to public services, security, fleet management, and critical monitoring operations.
Fleet telemetry devices, OBD-II product families, solar asset tracking systems, and mobile monitoring units. Through our technology partners in the UK and US, our platforms deliver cloud architectures, mobile applications, and modern API integrations.
🌍 5 International Partnerships | 150+ Global Projects
🔗 Website: www.rootcastle.com
📧 Contact: admin@rootcastle.com
📱 Phone: +90 507 545 29 39
- ⚡ Quick Start
- 📖 Complete Usage Guide
- 🔌 Compatibility & Invocation
- 🛠️ Installation
- 🧯 Troubleshooting
- 🎁 Curated Collections (Bundles)
- 🧭 Workflows
- 📦 Features & Categories
- 📚 Browse 883+ Skills
- 🔒 Security
- 🤝 How to Contribute
- 👥 Credits & Sources
- ⚖️ License
Install once, use everywhere. Get 883+ skills in your AI coding assistant in under a minute.
# Default: ~/.gemini/rei/skills (Global)
npx rei-skills
# Or choose your platform:
npx rei-skills --claude # Claude Code
npx rei-skills --gemini # Gemini CLI
npx rei-skills --cursor # Cursor IDE
npx rei-skills --codex # Codex CLI
npx rei-skills --antigravity # Antigravity IDEtest -d ~/.gemini/rei/skills && echo "✅ Rei Skills installed successfully""Use @brainstorming to plan a SaaS MVP."
- Web Dev? → Start with
Web Wizard - Security? → Start with
Security Engineer - General? → Start with
Essentials
👉 Complete Usage Guide — Start here after installation
👉 Bundles Guide — Curated skill packs by role
Rei Skills follow the universal SKILL.md format and work with any AI coding assistant that supports agentic skills.
| Tool | Type | Invocation Example | Path |
|---|---|---|---|
| Claude Code | CLI | >> /skill-name help me... |
.claude/skills/ |
| Gemini CLI | CLI | (User Prompt) Use skill-name... |
.gemini/skills/ |
| Codex CLI | CLI | (User Prompt) Use skill-name... |
.codex/skills/ |
| Antigravity | IDE | (Agent Mode) Use skill... |
Global: ~/.gemini/rei/skills/ · Workspace: .agent/skills/ |
| Cursor | IDE | @skill-name (in Chat) |
.cursor/skills/ |
| Copilot | Ext | (Paste content manually) |
N/A |
| OpenCode | CLI | opencode run @skill-name |
.agents/skills/ |
| AdaL CLI | CLI | (Auto) Skills load on-demand |
.adal/skills/ |
Tip
Default installer path: ~/.gemini/rei/skills (Global). Use --path ~/.agent/skills for workspace-specific install.
Warning
Windows Users: This repository uses symlinks for official skills. Enable Developer Mode or run Git as Administrator. See Troubleshooting.
# Default: ~/.gemini/rei/skills (Global)
npx rei-skills
# Claude Code
npx rei-skills --claude
# Gemini CLI
npx rei-skills --gemini
# Codex CLI
npx rei-skills --codex
# Cursor
npx rei-skills --cursor
# Antigravity IDE
npx rei-skills --antigravity
# OpenCode
npx rei-skills --path .agents/skills
# Custom path
npx rei-skills --path ./my-skillsRun npx rei-skills --help for all options.
# Global (matches npx default)
git clone https://github.com/rootcastleco/rei-skills.git ~/.gemini/rei/skills
# Workspace-specific
git clone https://github.com/rootcastleco/rei-skills.git .agent/skills
# Claude Code
git clone https://github.com/rootcastleco/rei-skills.git .claude/skills
# Gemini CLI
git clone https://github.com/rootcastleco/rei-skills.git .gemini/skills
# Cursor
git clone https://github.com/rootcastleco/rei-skills.git .cursor/skillsUse the GitHub package fallback:
npx github:rootcastle/rei-skillsgit clone -c core.symlinks=true https://github.com/rootcastleco/rei-skills.git .agent/skillsInstall to the tool-specific path using the installer flags: --claude, --gemini, --codex, --cursor, --antigravity, or --path <dir>.
git -C ~/.gemini/rei/skills pullrm -rf ~/.gemini/rei/skills
npx rei-skillsBundles are curated groups of skills for specific roles (e.g., Web Wizard, Security Engineer, OSS Maintainer).
Bundles are NOT separate installations. You already have all skills after one install. Bundles are simply recommended lists to help you focus.
- Install the repository once (all 883+ skills included)
- Browse bundles in docs/BUNDLES.md
- Pick 3-5 skills from a bundle to start
- Reference them in your conversations:
"Use @brainstorming..."
- Building a SaaS MVP:
Essentials+Full-Stack Developer+QA & Testing - Hardening production:
Security Developer+DevOps & Cloud+Observability - Shipping OSS changes:
Essentials+OSS Maintainer
Bundles help you choose skills. Workflows help you execute them in order.
- docs/WORKFLOWS.md — Human-readable playbooks
- data/workflows.json — Machine-readable workflow metadata
Available Workflows:
- 🚀 Ship a SaaS MVP
- 🔒 Security Audit for a Web App
- 🤖 Build an AI Agent System
- 🧪 QA and Browser Automation
| Category | Focus | Example Skills |
|---|---|---|
| Architecture | System design, ADRs, C4, scalable patterns | architecture, c4-context, senior-architect |
| Business | Growth, pricing, CRO, SEO, go-to-market | copywriting, pricing-strategy, seo-audit |
| Data & AI | LLM apps, RAG, agents, observability | rag-engineer, prompt-engineer, langgraph |
| Development | Languages, frameworks, code quality | typescript-expert, python-patterns, react-patterns |
| General | Planning, docs, product ops, writing | brainstorming, doc-coauthoring, writing-plans |
| Infrastructure | DevOps, cloud, serverless, CI/CD | docker-expert, aws-serverless, vercel-deployment |
| Security | AppSec, pentesting, vuln analysis, compliance | api-security-best-practices, vulnerability-scanner |
| Testing | TDD, test design, QA workflows | test-driven-development, testing-patterns, test-fixing |
| Workflow | Automation, orchestration, agents | workflow-automation, inngest, trigger-dev |
👉 View the Complete Skill Catalog (CATALOG.md)
All skills are audited for security vulnerabilities, hardcoded credentials, and dangerous commands.
Offensive security skills (penetration testing, red teaming) are included for authorized educational and professional use only.
- Fork the repository
- Create a new directory inside
skills/for your skill - Add a
SKILL.mdwith the required frontmatter (name,description,risk,source). See docs/SKILL_ANATOMY.md and docs/QUALITY_BAR.md. - Run validation:
npm run validate - Submit a Pull Request
This collection stands on the shoulders of the open-source community. Full attribution is preserved in CREDITS.md.
Key sources include:
- anthropics/skills — Official Anthropic skills
- microsoft/skills — Official Microsoft skills
- openai/skills — Official OpenAI Codex skills
- google-gemini/gemini-skills — Official Gemini skills
- vercel-labs/agent-skills — Vercel Labs skills
- supabase/agent-skills — Supabase skills
- The Open Source Community — 300+ community contributors
Batuhan Ayrıbaş
Founder & Lead Engineer — Rootcastle Engineering & Innovation (REI)
- 🌐 www.rootcastle.com
- 📧 admin@rootcastle.com
- 📱 +90 507 545 29 39
MIT License. See LICENSE for details.
🏰 Rei Skills — Engineering Beyond Boundaries
Curated by Rootcastle Engineering & Innovation | © REI 2025. All rights reserved.