Hermit crab

What would Greg Isenberg
do?

600 expert skills · 7,000 principles · 57 creators

01

Decisions, Not Answers

Generic LLMs say "it depends." Expert brains say "do this." Get opinionated, prescriptive guidance — like Hormozi saying "charge more" not "consider your market positioning."

02

Named Accountability

"According to Lenny..." — know who decided. If you get challenged, you can cite the expert. Someone you trust already made this call, now you can too.

03

Works with Any AI

Add a brain to Claude, ChatGPT, or your own agent via MCP. Your AI stops guessing and starts applying real expert frameworks to your exact problem.

▶ BRAIN PACKS

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Business
PACK

Greg Eisenberg: Startup Playbooks

27 skillsUSE →
Business
PACK

Acquired

10 skillsUSE →
Copywriting
PACK

Alex Cattoni

1 skillsUSE →
Business
PACK

Greg Eisenberg

190 skillsUSE →

▶ EXPERT BRAINS

VIEW ALL →
BusinessGreg Eisenberg
business217 skills
BusinessAlex Hormozi
business159 skills
BusinessMy First Million
business124 skills
ProductLenny Rachitsky
product192 skills
BusinessAcquired
business133 skills
TechAll-In Podcast
tech94 skills
FinancePatrick Boyle
finance92 skills
TechLex Fridman
tech0 skills
MarketingPerpetual Traffic
marketing1 skills
MarketingMarketing School
marketing13 skills
▶ FOR AI BUILDERS

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claude_desktop_config.json
{
  "mcpServers": {
    "hermitcrab": {
      "url": "https://api.hermitcrab.app/mcp/",
      "headers": {
        "X-API-Key": "your_key"
      }
    }
  }
}

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