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rei-skills

v1.0.0

Published

883+ Universal Agentic Skills for Claude Code, Gemini CLI, Cursor & More — Curated by Rootcastle Engineering & Innovation (REI) | Batuhan Ayrıbaş

Vulnerabilities

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Links

Git

Maintainers

rootcastlerootcastle

Keywords

rei-skillsrootcastleclaude-codecursorgemini-cliagentic-skillsai-codingai-agentsengineeringiotcybersecurity

Readme

🏰 Rei Skills — 883+ Universal Agentic Skills

The Ultimate Collection of 883+ Universal Agentic Skills for AI Coding Assistants — Curated by Rootcastle Engineering & Innovation (REI) | Batuhan Ayrıbaş

Rootcastle npm License: MIT Skills

Claude Code Gemini CLI Codex CLI Cursor Copilot Antigravity

🏰 About Rootcastle Engineering & Innovation

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.

Under brands like jTrack and NetFleet, we support container security solutions (HSCTS), 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: [email protected]
📱 Phone: +90 507 545 29 39

Table of Contents

Quick Start

Install once, use everywhere. Get 883+ skills in your AI coding assistant in under a minute.

1. Install

# 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 IDE

2. Verify

test -d ~/.gemini/rei/skills && echo "✅ Rei Skills installed successfully"

3. Use Your First Skill

"Use @brainstorming to plan a SaaS MVP."

4. Pick a Bundle

  • 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

Compatibility & Invocation

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.

Installation

Option A: npx (Recommended)

# 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-skills

Run npx rei-skills --help for all options.

Option B: Git Clone

# 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/skills

Troubleshooting

npx rei-skills returns 404

Use the GitHub package fallback:

npx github:rootcastle/rei-skills

Windows clone issues (symlinks)

git clone -c core.symlinks=true https://github.com/rootcastleco/rei-skills.git .agent/skills

Skills installed but not detected

Install to the tool-specific path using the installer flags: --claude, --gemini, --codex, --cursor, --antigravity, or --path <dir>.

Update an existing installation

git -C ~/.gemini/rei/skills pull

Reinstall from scratch

rm -rf ~/.gemini/rei/skills
npx rei-skills

Curated Collections

Bundles 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.

How to use bundles:

  1. Install the repository once (all 883+ skills included)
  2. Browse bundles in docs/BUNDLES.md
  3. Pick 3-5 skills from a bundle to start
  4. Reference them in your conversations: "Use @brainstorming..."

Examples:

  • Building a SaaS MVP: Essentials + Full-Stack Developer + QA & Testing
  • Hardening production: Security Developer + DevOps & Cloud + Observability
  • Shipping OSS changes: Essentials + OSS Maintainer

Workflows

Bundles help you choose skills. Workflows help you execute them in order.

Available Workflows:

  • 🚀 Ship a SaaS MVP
  • 🔒 Security Audit for a Web App
  • 🤖 Build an AI Agent System
  • 🧪 QA and Browser Automation

Features & Categories

| 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 |

Browse 883+ Skills

👉 View the Complete Skill Catalog (CATALOG.md)

Security

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.

How to Contribute

  1. Fork the repository
  2. Create a new directory inside skills/ for your skill
  3. Add a SKILL.md with the required frontmatter (name, description, risk, source). See docs/SKILL_ANATOMY.md and docs/QUALITY_BAR.md.
  4. Run validation: npm run validate
  5. Submit a Pull Request

Credits & Sources

This collection stands on the shoulders of the open-source community. Full attribution is preserved in CREDITS.md.

Key sources include:

Author

Batuhan Ayrıbaş
Founder & Lead Engineer — Rootcastle Engineering & Innovation (REI)

License

MIT License. See LICENSE for details.

🏰 Rei Skills — Engineering Beyond Boundaries

Curated by Rootcastle Engineering & Innovation | © REI 2025. All rights reserved.