One company at a time.
A brain holds what a company would never paste into someone else's chat, so instibrain opens company by company, to people we know by name. If you have an account, sign in.
Sign in is for people who already have an account. Without one, it stops you at the door.
An account is a brain, a sync client, and an endpoint.
A named account we create for a person at a company — not a code, not a waiting list. It comes with one brain, the sync client for every device that holds it, and an MCP endpoint any AI you hire can read. Nothing is charged for it; the terms say so.
Everything else is public.
The mechanism, in full rather than in summary: the wire contract is complete enough to write your own client against, the security model states its own limits, and the sync client page shows the commands it gives you. Read them and judge the thing before anyone asks you to trust it.