Test your business idea before you build it.
Brain is an AI partner for founders and small businesses. It sizes the market, works out positioning and pricing, publishes a signup page, counts who bites, and keeps everything it learns in a knowledge base you own.
No credit card. Sign in with Google — the demo needs nothing at all.
Bottom-up, the first segment is parents of newborns in one city1. Meal-kit incumbents sell to families, not to the first twelve weeks.
For founders, aspiring entrepreneurs and small teams — ideation, validation, go-to-market, sales, and whatever else the work needs. Shared knowledge up top, private notes underneath.
The homework, the test, and the memory.
Brain does the analysis a good advisor would, puts a real page in front of real people, and keeps everything you learn in cited pages you own. Business is the expected use, never a forced one: ask it anything else and it answers like a normal assistant.
Business know-how built in
Strategy with the 7 Powers and the Delta Model, market size and composition, business models and unit economics, marketing, sales, customer discovery. The agent leans on it when the task is business, and stays out of the way when it isn't.
Validate demand for real
An honest "sign up if interested" page, published in minutes and yours to customize. A tracked link per channel, visits counted server-side, signups confirmed by double opt-in, all on one dashboard.
A knowledge base that becomes your business
Market, customers, competitors, product, go-to-market, finances, strategy: the agent files facts into these pages as they turn up, cited and linked. Nothing is created until there is something to put in it.
You approve before it writes
Every ingest is a plan you see first: drop a page, rename it, choose shared or private. Then it applies page by page with a live checklist, leaves a receipt, and can be undone.
Nightly sleep pass
After hours the agent re-reads everything, distills what it learned, flags stale pages, and proposes edits, all routed to your inbox for one-click accept or reject.
Project spaces, skills, connectors
A project space per venture with a shared knowledge base up top and private notes underneath. Teach it playbooks as markdown skills, and plug in outside tools through MCP connectors scoped per project space.
From an idea to a signal you can trust
Describe the idea
Start from a topic — strategy, competitive landscape, marketing, sales, customers — or just talk. The agent sizes the market top-down and bottom-up, drafts positioning and pricing, and files what it finds.
Put a page in front of people
Pick a template, customize it in chat, publish. Share one tracked link per channel and watch real visits turn into confirmed signups.
Build on what you learned
Interview notes, competitor pages, numbers: every fact lands in your knowledge base with a citation. Ask anything, schedule recurring research, review overnight edits in your inbox.
It shows its work, and asks first.
- Frameworks, not vibes
Moats are rated power by power, markets are sized two ways, unit economics are worked out line by line. Estimates are labelled as estimates; facts carry a citation.
- Honest validation
No fake doors. The page says what it is, signups are confirmed by email, and confirmed signups are the number you get — not clicks.
- You stay in control
Plans are approved before anything is written, every apply leaves a receipt with an undo, every page keeps its revision history, and sensitive memory waits for your review.
- Choose fast or thorough per task
Ask for a quick answer when you're in a hurry, or tell it to think longer on the hard questions. You decide where the extra effort goes.
Accept or dismiss — the agent handles the rest.
Find out if anyone wants it.
Do the homework, publish the page, count the signups, and keep everything you learn along the way.