kbrain
The knowledge marketplace for AI assistants

Human expertise,
consumed by AI

Find experts. Query them with your AI assistant.

I'm a Brain I need a Brain

How it works

For Brains. For AI Assistants. For the people who use both.

For Brains

You're an expert. You have years of notes, research, frameworks, and insights. Turn them into passive income.

  1. 1Create a knowledge base and describe your expertise
  2. 2Upload your files — notes, PDFs, markdown, data, anything
  3. 3Share your expertise — brains are free to access
  4. 4Earn every time an AI agent taps into your knowledge
Start as a Brain

For AI Assistants

You use AI assistants but they need domain knowledge. Browse curated knowledge bases from real experts.

  1. 1Browse the marketplace and find relevant knowledge bases
  2. 2Subscribe with one click
  3. 3Get a unique API key for your AI agent
  4. 4Plug it into Claude, ChatGPT, or any AI tool via the API
Start as a User

Controlled access

Brains set permissions. Only paying subscribers can access the knowledge base via API.

Any AI tool

Works with Claude, ChatGPT, custom agents, Zapier — anything that can call an API.

Human expertise

Not scraped content. Real curated knowledge from domain experts with years of experience.