kbrain

Ask an expert brain. Get an answer with sources.

KBrain turns documents, yours or an expert’s, into knowledge your assistant answers from. Connect it once to Claude, ChatGPT or Cursor, and every answer says where it came from.

Browse the marketplace Build your own brain

Sales keeps asking for features. How do I prioritize?

Product Manager Operator

Treat sales requests as signals about problems, not specifications. Prioritize problems, then derive features, keep the committed set small, and say no in writing: "Not now, because X is higher impact. Here is what would change my mind."

↳ PM Foundations, 6. PrioritizationOpen this brain

Works inClaudeChatGPTCursorany MCP client

Three steps. No more re-pasting context.

  1. Step 1

    Bring in what you know

    Upload the documents that hold the expertise - specs, policies, decisions, decrees. KBrain structures them into something an agent can actually query. Google Drive folder sync is in testing; direct upload works today.

  2. Step 2

    Get one MCP endpoint

    One URL, tied to your account, not to any single brain. Paste it into Claude, ChatGPT, or Cursor once, and every brain you connect answers through it - no new connector per brain.

    kbrain.io/api/mcp
  3. Step 3

    Keep it, or publish it

    Brains start private and stay that way by default. When one is good enough that people would pay for it, publish it to the marketplace and earn on every query.

Company brains: one source of truth for every assistant.

Your team already asks AI about pricing rules, security policies and how things are done. KBrain makes sure it answers from the documents you maintain, not from whatever someone pasted last month.

Talk to us about your team How teams use it

  • Always the current version

    Company brains sync from Google Drive, OneDrive or GitHub. When a policy changes, every assistant answers from the new one.

  • Members-only endpoint

    Your organisation gets its own MCP endpoint. Only your people can query it, from Claude, ChatGPT or Cursor.

  • Knowledge managers decide

    A few owners curate what goes in. Everyone else just asks, with role-based permissions and audit logs on Business.

  • Answers cite the source

    People see which document an answer came from, so nobody acts on an old deck or a half-remembered Slack thread.

Or borrow an expert's brain.

Browse the marketplace

Built for people tired of re-explaining themselves.

Real estate investor

Synced French rental regulations and tax PDFs to a private brain. Ask Claude jurisdiction-specific questions and get jurisdiction-specific answers.

Security researcher

Built a private brain from NIST PQC standards and internal specs. Claude answers strictly from verified sources - never improvises.

Content creator

Packaged three years of newsletters into a public brain. Earns every time an agent queries that expertise.

Consultant

Scopes a brain to each client engagement. Shares the endpoint for the length of the project, then revokes it.

See all use cases Explore guides and learn how it works

Build your first brain in five minutes.

Free to start, no card required. Private by default. Publish it later if you want to, or never.

Get started