Legends MCP

🏛️ Legends MCP

Chat with legendary founders & investors in Claude. No API key required!

Ever wanted to ask Elon Musk about first principles? Get Warren Buffett's take on your investment? Have Steve Jobs roast your product design? Get Paul Graham and Marc Andreessen to debate your startup idea?

Now you can. With Party Mode, multiple legends can discuss your questions together!

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✨ What's New in v1.4

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🚀 Quick Start

Claude Code (~/.claude/settings.json):

{
  "mcpServers": {
    "legends": {
      "command": "npx",
      "args": ["legends-mcp"]
    }
  }
}

That's it. No API key needed. Restart Claude Code and start chatting!

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🎭 Party Mode - Multi-Legend Discussions

Ask complex questions and get perspectives from multiple legends:

You: "How should I approach raising my seed round?"

Claude: *Activates Party Mode with Paul Graham, Marc Andreessen, and Bill Gurley*

Paul Graham: "The best fundraising advice is: make something people want first.
Don't optimize for raising money. Optimize for building something users love..."

Marc Andreessen: "Software is eating the world, and VCs know it. Show us
the market size. Show us why NOW is the time..."

Bill Gurley: "Valuation is a vanity metric. What matters is finding partners
who truly understand your business..."

When Party Mode Activates

• Complex questions with multiple valid perspectives
• "Pros and cons" or "different viewpoints" requests
• Debates between different schools of thought
• Questions matching 2+ legends' expertise

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🔮 Smart Suggest - Proactive Recommendations

The suggest tool analyzes your question and returns ready-to-execute actions:

User: "How do I build a crypto exchange?"

suggest() returns:
┌─────────────────────────────────────────────────┐
│ primary_action: {                               │
│   tool: "party_mode",                           │
│   params: {                                     │
│     question: "How do I build a crypto exchange"│
│     legends: ["cz-binance", "brian-armstrong"]  │
│   }                                             │
│ }                                               │
│                                                 │
│ suggested_actions: [                            │
│   { tool: "party_mode", ... },                  │
│   { tool: "summon_legend", id: "cz-binance" },  │
│   { tool: "summon_legend", id: "brian-armstrong"│
│   { tool: "auto_match", ... }                   │
│ ]                                               │
└─────────────────────────────────────────────────┘

Claude picks the best option and executes it!

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👥 The Council of Legends (36 Total)

🚀 Tech Titans

💰 Legendary Investors

🌱 Startup Sages

⛓️ Crypto Builders

...and 17 more legends including Tim Ferriss, Gary Vaynerchuk, Tobi Lütke, and others!

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🛠️ All Tools

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🔒 Security

v1.3+ includes security hardening:

• ✅ Prompt injection protection - User context isolated from system prompts
• ✅ Input sanitization - Detects and neutralizes injection attempts
• ✅ Safe output encoding - JSON encoding prevents markdown injection
• ✅ No CWD loading - Only loads bundled legends (opt-in for custom)
• ✅ No external APIs - Zero network requests, zero data leakage

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📊 How It Works

┌─────────────────────────────────────────────────────────────┐
│                    ARCHITECTURE                              │
├─────────────────────────────────────────────────────────────┤
│                                                              │
│   User Question                                              │
│        │                                                     │
│        ▼                                                     │
│   ┌──────────────────┐                                       │
│   │  suggest()       │  ← Analyzes question                  │
│   │  "Who can help?" │                                       │
│   └────────┬─────────┘                                       │
│            │                                                 │
│            ▼                                                 │
│   ┌──────────────────┐     ┌──────────────────┐             │
│   │  party_mode()    │ OR  │  summon_legend() │             │
│   │  (multi-legend)  │     │  (single legend) │             │
│   └────────┬─────────┘     └────────┬─────────┘             │
│            │                        │                        │
│            ▼                        ▼                        │
│   ┌──────────────────────────────────────────────┐          │
│   │           legends/*.yaml                      │          │
│   │  (36 bundled persona files - NO API calls!)  │          │
│   └──────────────────────────────────────────────┘          │
│            │                                                 │
│            ▼                                                 │
│   Claude adopts persona(s) and responds in character!       │
│                                                              │
└─────────────────────────────────────────────────────────────┘

Zero external APIs. Zero API keys. Just Claude + persona data.

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🎯 Usage Examples

Get startup advice from multiple perspectives

"What's the most important thing for a first-time founder?"
→ Party Mode: Paul Graham + Sam Altman + Brian Chesky discuss

Deep dive on investing

"Should I invest in Bitcoin?"
→ Warren Buffett (skeptic) vs Balaji (bull) debate

Technical decisions

"How do I scale my database?"
→ Summon Jeff Bezos for Day 1 / SOA thinking

Life advice

"How do I build wealth?"
→ Naval Ravikant on leverage, specific knowledge, equity

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⚙️ Environment Variables

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⚠️ Disclaimers

⚠️ NOT affiliated with, endorsed by, or representative of any real individual
⚠️ NOT financial, legal, or professional advice
⚠️ AI personas for EDUCATIONAL and ENTERTAINMENT purposes only
⚠️ Based on publicly available information, speeches, and writings
⚠️ Always do your own research (DYOR)

The views expressed by these AI personas are generated interpretations, not actual statements from the real people.

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🤝 Contributing

Want to add a legend? PRs welcome!

Each legend needs:

• legends/<name>/skill.yaml with identity, voice, principles, patterns
• Authentic voice based on public knowledge
• Clear guardrails (things they'd never say)

See existing legends for examples.

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📄 License

MIT - Use freely, but include the disclaimers.

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🏛️ "The best time to get advice from a legend was 20 years ago.
The second best time is now."

npm • GitHub • Glama