Claude Skills by onatvural
This repo is where I collect useful Claude Skills
Claude Skills is an open-source agent skill by onatvural, with 28 GitHub stars and the MIT license. Its code was last updated Aug 31, 2026.
Claude Code Skills Collection
A curated collection of specialized skills for Claude Code - Anthropic's official CLI for Claude.
What Are Skills?
Skills are packaged prompts and resources that extend Claude Code's capabilities with specialized domain expertise. Each .skill file contains structured instructions, frameworks, and reference materials that transform Claude into a domain expert.
Installation
Method 1: Clone Repository (Recommended)
git clone https://github.com/onatvural/Claude-Skills.git ~/.claude/skills
Method 2: Download Individual Skills
Download the .skill file and place it in your ~/.claude/skills/ directory.
Activation
Skills are automatically available in Claude Code. Invoke them based on their trigger patterns or explicitly reference the skill name.
Available Skills
1. Warren Buffett Analyst
File: warren-buffett-analyst.skill
Value investing analysis using Warren Buffett's proven methodology. Transforms Claude into the Oracle of Omaha with his folksy Midwestern wisdom.
Capabilities:
- Owner Earnings calculation
- Intrinsic value DCF analysis
- Moat classification (inevitable/formidable/strong/questionable)
- Position sizing with modified Kelly Criterion
- Margin of safety analysis
- Buffett Indicator for market timing
Trigger Patterns:
- Stock valuation requests
- Competitive moat assessment
- Business quality evaluation
- Investment decision analysis
- "Is this a good investment?"
Example Prompts:
"Analyze Apple's competitive moat using Buffett's framework"
"Calculate owner earnings for Microsoft"
"What would Buffett think of this business model?"
"Is the market overvalued right now?"
2. Global Macro-Political Analyst
File: global-macro-analyst.skill
Geopolitical and macroeconomic analysis for understanding global events and their investment implications. Transforms Claude into a battle-hardened geopolitical strategist.
Capabilities:
- Decode geopolitical events (wars, sanctions, trade wars)
- Great power competition analysis (US-China-Russia dynamics)
- Risk scenario building with probability weights
- PESTEL country/region analysis
- Game theory for strategic moves
- Economic constraints analysis (Impossible Trinity, Fiscal Space)
- Sanctions and trade war escalation assessment
- Hybrid warfare and deterrence analysis
Included Frameworks:
| Category | Frameworks |
|---|---|
| Strategic Environment | PESTEL, Levels of Analysis, Great Power Matrix |
| Actor Behavior | Game Theory, Two-Level Game, Regime Stability |
| Economic Constraints | Impossible Trinity, Fiscal Space, CB Credibility |
| Risk & Vulnerability | Country Risk, Supply Chain, Contagion |
| Conflict & Coercion | Sanctions, Trade War, Hybrid Warfare, Deterrence |
| Scenario & Decision | Scenario Planning, Alliance Reliability, Decision Synthesis |
Trigger Patterns:
- International conflicts and territorial disputes
- Great power competition questions
- Energy/commodity market analysis
- Currency movements and sanctions
- "What happens now?" questions
- "How will X affect markets?"
- Scenario analysis requests
Example Prompts:
"What are the implications of rising US-China tensions for semiconductor supply chains?"
"Analyze the oil market impact if sanctions on Iran are lifted"
"Build scenarios for the Taiwan situation"
"How does the Russia-Ukraine conflict affect European energy security?"
"What's Turkey's economic outlook given its impossible trinity constraints?"
Skill File Structure
Each .skill file is a ZIP archive containing:
skill-name/
├── SKILL.md # Main skill definition and instructions
├── scripts/ # Optional Python/JS helper scripts
├── references/ # Reference documents and frameworks
│ ├── frameworks/ # Analysis frameworks
│ └── *.md # Supporting documentation
└── assets/ # Templates, examples, case studies
Creating Your Own Skills
- Create a directory with your skill name
- Add a
SKILL.mdwith frontmatter:--- name: your-skill-name description: Brief description and trigger patterns --- - Add any supporting files (scripts, references, assets)
- Package as ZIP:
zip -r your-skill-name.skill your-skill-name/
Contributing
Contributions welcome! Please:
- Fork the repository
- Add your skill following the structure above
- Update this README with skill documentation
- Submit a pull request
License
MIT License - See LICENSE for details.
Disclaimer
These skills are designed for educational and analytical purposes. Investment analysis skills do not constitute financial advice. Always consult qualified professionals before making investment decisions.
Created by: @onatvural
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