883+ Universal Agentic Skills for Claude Code, Gemini CLI, Cursor & More — Curated by Rootcastle Engineering & Innovation (REI) | Batuhan Ayrıbaş
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.
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: admin@rootcastle.com
📱 Phone: +90 507 545 29 39
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 IDE
test -d ~/.gemini/rei/skills && echo "✅ Rei Skills installed successfully"
"Use @brainstorming to plan a SaaS MVP."
Web WizardSecurity EngineerEssentials👉 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/skillsfor 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-skills
Run 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/skills
npx rei-skills returns 404Use the GitHub package fallback:
npx github:rootcastle/rei-skills
git clone -c core.symlinks=true https://github.com/rootcastleco/rei-skills.git .agent/skills
Install to the tool-specific path using the installer flags: --claude, --gemini, --codex, --cursor, --antigravity, or --path <dir>.
git -C ~/.gemini/rei/skills pull
rm -rf ~/.gemini/rei/skills
npx rei-skills
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.
"Use @brainstorming..."Essentials + Full-Stack Developer + QA & TestingSecurity Developer + DevOps & Cloud + ObservabilityEssentials + OSS MaintainerBundles help you choose skills. Workflows help you execute them in order.
Available Workflows:
| 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.
skills/ for your skillSKILL.md with the required frontmatter (name, description, risk, source). See docs/SKILL_ANATOMY.md and docs/QUALITY_BAR.md.npm run validateThis collection stands on the shoulders of the open-source community. Full attribution is preserved in CREDITS.md.
Key sources include:
Batuhan Ayrıbaş
Founder & Lead Engineer — Rootcastle Engineering & Innovation (REI)
MIT License. See LICENSE for details.
🏰 Rei Skills — Engineering Beyond Boundaries
Curated by Rootcastle Engineering & Innovation | © REI 2025. All rights reserved.
FAQs
883+ Universal Agentic Skills for Claude Code, Gemini CLI, Cursor & More — Curated by Rootcastle Engineering & Innovation (REI) | Batuhan Ayrıbaş
The npm package rei-skills receives a total of 2 weekly downloads. As such, rei-skills popularity was classified as not popular.
We found that rei-skills demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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