Rent a brain.
Temporarily borrow an expert's decision-making mind. Someone you trust already decided.
Decisions, Not Just Answers
Generic LLMs say 'it depends.' Experts say 'do this.' Get opinionated, prescriptive guidance — like 'Always move to AWS early' not 'consider your scale and budget...'
Accountability You Can Reference
"According to Kenji..." — know who decided. Social proof builds confidence. And if questioned, you can cite the expert. Someone you trust already made this call.
What Would [Expert] Do?
Mental models, decision frameworks, specific prescriptions. Not generic advice — the exact heuristics experts use. Learn how Karpathy, Greg, or Babish actually think.
A prompt file tells your AI how to behave. A hermitcrab brain gives it actual expertise to rent — like borrowing a doctor's mind for a specific diagnosis instead of reading a generic textbook. You're not buying a tool, you're temporarily renting an expert's decision-making brain.
12 brain packs · 50 expert brains · 59 creators
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Know something. Rent your brain.
If you're an expert in anything — cooking, SEO, finance, copywriting — your decision-making brain can be rented by others. Publish once. Earn every time someone borrows your mind.
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