🏛️ 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!

✨ What's New in v1.4

Feature	Description
🎭 Party Mode	Multiple legends discuss your question together
🔮 Smart Suggest	Proactively recommends relevant legends
🎯 Auto Match	Deep analysis of which legends fit your topic
🔒 Security Fixes	Prompt injection protection, input sanitization

🚀 Quick Start

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

config.json

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

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

🎭 Party Mode - Multi-Legend Discussions

Ask complex questions and get perspectives from multiple legends:

Code

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

🔮 Smart Suggest - Proactive Recommendations

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

Code

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!

👥 The Council of Legends (36 Total)

🚀 Tech Titans

Legend	Specialty
Elon Musk	First principles, physics thinking, building the impossible
Steve Jobs	Product design, reality distortion, user experience
Jeff Bezos	Day 1 thinking, customer obsession, long-term vision
Jensen Huang	GPUs, AI infrastructure, CUDA everything
Satya Nadella	Enterprise transformation, cloud, culture change

💰 Legendary Investors

Legend	Specialty
Warren Buffett	Value investing, compound interest, circle of competence
Charlie Munger	Mental models, multidisciplinary thinking, inversion
Ray Dalio	Principles, radical transparency, macro investing
Peter Thiel	Zero to one, contrarian bets, monopolies
Marc Andreessen	Software eating world, venture capital, tech optimism

🌱 Startup Sages

Legend	Specialty
Paul Graham	Essays, YC wisdom, making things people want
Sam Altman	Startups, AI/AGI, scaling companies
Naval Ravikant	Wealth creation, leverage, specific knowledge
Reid Hoffman	Network effects, blitzscaling, LinkedIn
Brian Chesky	Design thinking, Airbnb, company culture

⛓️ Crypto Builders

Legend	Specialty
CZ (Changpeng Zhao)	Exchange building, BUIDL, global expansion
Vitalik Buterin	Ethereum, smart contracts, crypto philosophy
Anatoly Yakovenko	Solana, proof of history, performance
Balaji Srinivasan	Network state, crypto predictions, tech trends

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

🛠️ All Tools

Tool	Purpose	Example
`suggest`	🔮 Proactive recommendations	Analyzes your question, suggests best legend(s)
`party_mode`	🎭 Multi-legend discussion	Get 2-5 legends to discuss together
`summon_legend`	👤 Single legend advice	Channel one legend's perspective
`auto_match`	🎯 Deep legend discovery	Detailed analysis of which legends fit
`list_legends`	📋 Browse all legends	See all 36 available legends
`search_legends`	🔍 Find by keyword	Search by expertise, name, or topic
`get_legend_context`	📖 Deep dive	Get frameworks, principles, examples
`get_legend_insight`	💡 Quick wisdom	Get a concise insight on any topic

🔒 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

📊 How It Works

Code

┌─────────────────────────────────────────────────────────────┐
│                    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.

🎯 Usage Examples

Get startup advice from multiple perspectives

Code

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

Deep dive on investing

Code

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

Technical decisions

Code

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

Life advice

Code

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

⚙️ Environment Variables

Variable	Default	Description
`LEGENDS_MCP_LEGENDS_DIR`	(bundled)	Custom legends directory
`LEGENDS_MCP_ALLOW_CWD`	`false`	Allow loading from current directory
`LEGENDS_MCP_DEBUG`	`false`	Enable debug logging

⚠️ Disclaimers

Code

⚠️ 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.

🤝 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.

📄 License

MIT - Use freely, but include the disclaimers.

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

npm • GitHub • Glama