中文版 | English
An AI investment analysis skill built on Warren Buffett's 70 years of investment philosophy. Not a quote machine — a complete cognitive framework that searches primary sources, combines real-time data, and delivers clear investment verdicts.
You ask about any company. The agent:
- Searches real-time data — latest earnings, news, stock price
- Searches the Vault — 49 shareholder letters, 35 annual meeting transcripts, 68 interviews, 49 quarterly 13F filings
- Runs a 6-step analysis — circle of competence, moat, management, owner earnings, margin of safety, verdict
- Delivers a clear action call — Strong Buy / Buy / Accumulate on Weakness / Watch / Avoid
Every analysis must cite specific vault sources. No citations = invalid output.
One line (auto-detects your platform):
curl -sSL https://raw.githubusercontent.com/RayIsCoing/Buffett-Vault/master/install.sh | bashOr tell your agent:
Install this skill: https://github.com/RayIsCoing/Buffett-Vault
Run:
curl -sSL https://raw.githubusercontent.com/RayIsCoing/Buffett-Vault/master/install.sh | bash
Manual install by platform
| Platform | Command |
|---|---|
| Claude Code | git clone https://github.com/RayIsCoing/Buffett-Vault.git ~/.claude/skills/buffett-perspective |
| Codex CLI | git clone https://github.com/RayIsCoing/Buffett-Vault.git ~/.agents/skills/buffett-perspective |
| OpenClaw | git clone https://github.com/RayIsCoing/Buffett-Vault.git ~/.openclaw/workspace/skills/buffett-perspective |
| Cursor | git clone https://github.com/RayIsCoing/Buffett-Vault.git .cursor/skills/buffett-perspective then add to Rules for AI |
Analyze NVIDIA from Buffett's perspective
What would Buffett think about the current AI bubble?
Is Costco a wonderful business at today's price?
| Source | Count | Coverage |
|---|---|---|
| Shareholder Letters | 49 | 1977–2025 |
| Partnership Letters | 7 | 1957–1976 |
| Annual Meeting Transcripts | 35 | 1985–2025 |
| CNBC Interviews | 39 | 2008–2026 |
| Podcast Transcripts | 26 | Various |
| 13F SEC Filings (CSV) | 49 | 2013 Q4–2025 Q4 |
| Structured Notes | 4 | Holdings history, rejected investments, philosophy evolution |
All files are plain text (.txt / .csv / .md), searchable by the agent via grep/read tools.
User question → Real-time search → Vault retrieval → 6-step analysis → Verdict with sources
The agent reads SKILL.md (Buffett's persona, cognitive framework, anti-rejection rules) and the platform-specific operating manual (CLAUDE.md for Claude Code, AGENTS.md for Codex/OpenClaw/others). An INDEX.md maps topics to specific files so the agent knows exactly where to search.
| File | Read By | Purpose |
|---|---|---|
SKILL.md |
All agents | Buffett persona prompt: voice, framework, 6-step engine, case library |
CLAUDE.md |
Claude Code | Operating manual (Chinese): workflow, retrieval methods, output format |
AGENTS.md |
Codex / OpenClaw / Cursor | Operating manual (English): same content, AGENTS.md protocol |
INDEX.md |
All agents | Topic → file search map, eliminates guesswork |
On platforms with skill triggers (Claude Code, Codex, OpenClaw):
buffett · 巴菲特 · warren buffett · berkshire · 伯克希尔 · value investing · 价值投资 · moat analysis · 护城河 · 股东信 · buffett mode · ask warren · buffett perspective
Original PDFs are not included (already extracted to .txt). Shareholder letters are available at berkshirehathaway.com.
SKILL.md, CLAUDE.md, AGENTS.md, and Notes/ are original content under MIT License.
Shareholder letters, meeting transcripts, and interview texts are copyrighted by Berkshire Hathaway / original sources.