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Early access — Product Brain is in hosted beta. Some surfaces in these docs may not be visible on every account yet. For early access, help, and release notes, join the Product Brain Community.

Product Brain

The governed knowledge graph your AI agents read before they act. Product knowledge usually scatters — across docs, chats, and people’s heads. Product Brain stores it as a typed, governed graph called the Chain, and your AI tools read it on every prompt.

What brings you here?

Use the tabs above after you pick a path:
  1. Try it — Open Cortex (our web app). Your first capture in about five minutes, no MCP install.
  2. Connect — Your host environment is Cursor, Claude, ChatGPT, Codex, or another MCP client. Pick your tool and install the wiring that connects it to the Chain.
  3. Learn — What the Chain is, why it exists, how it’s governed — the model for CPOs, leads, and investors.
  4. For engineers and power users — Reference tab: the wiring layer (CLI · MCP server · REST API), schemas, and auth.
What you’ll find here (this page): a five-second orientation. Everything else lives under the tabs so we do not dump the whole machine on a cold reader. † Vocabulary used across these docs (kernel · runtime · wiring · product surface · marketing surface · host environment) is pending governing Chain DEC ratification (see internal taxonomy work: DEC-833 draft, TEN-1695). This footnote comes off the Welcome page once that DEC and glossary amendments are committed.