Stop re-explaining
your GTM strategy to AI
Marketing Brain is your company’s marketing memory — a living knowledge base that makes any AI dramatically smarter about your marketing. Plug it into Claude, ChatGPT, or Slack. Wherever you work.
The single home for what your team knows
Everything your marketing team knows,
in one place AI can read
Knowledge structure
Organized like folders — for you and the AI
Everything your team knows lives in a clean, navigable tree: Company (who you are and who you sell to), Marketing facts (your metrics, channels, team, and tech stack), and Learnings (what worked, what didn’t, and why). When you ask a question, the AI walks this exact tree before it answers.
Instant setup
It builds itself from your website
You don’t start with a blank page. Enter your website URL and the Brain researches it for you — drafting your company overview, customer personas, and positioning automatically. Review the drafts, keep what’s right. Setup takes minutes, not days.
Always current
It keeps itself up to date from your budget
Knowledge goes stale. The Brain automatically pulls fresh details from your budget — your tools, your team, your contractors, the markets you spend in — and keeps those notes current without you lifting a finger.
Self-aware gaps
It flags what’s missing and asks the right person
No customer persona defined? No cost-per-acquisition target set? A metric untouched for months? The Brain spots the gap, flags it as an open question, and asks the right person on your team to fill it in — so it gets sharper over time instead of rotting like most internal wikis.
Grounded answers
It makes your AI Budget Buddy genuinely useful
Ask Budget Buddy to plan next year’s budget and it browses your Brain first — reading last year’s campaign learnings, your channel performance, your CAC targets, your team and tools — then proposes a plan built on your actual reality.
Travels with you
Works with the AI tools you already use
The Brain isn’t locked inside Etropo. Connect it to outside AI assistants like Claude through the MCP server — so the same trusted company context travels with you wherever you work.
The details
Smaller things you’ll notice
The Brain is built to be trusted: nothing happens behind your back, and you always have the final say.
Brain health, at a glance
A health view shows how complete and fresh your Brain is, with one-click refresh.
Full change history
Every entry shows who — or which AI — added it and when, in a filterable timeline.
You stay in control
AI can draft and suggest, but every fact is yours to edit, keep, or delete. Nothing is silently overwritten.
Guided welcome
A four-step walkthrough explains the “why” and gets you to your first scan.
The Brain learns from your everyday work
The Brain builds itself from your website and budget, asks when it spots a gap, and captures knowledge as it happens — so you never have to stop and “write things down.”
Learns from your AI conversations
When you work through marketing problems with Claude or ChatGPT, the insights flow straight into the Brain — so a good thinking session becomes lasting company knowledge instead of disappearing into chat history.
Updates from Slack, on the fly
Mention @etropo in a thread and tell it what to remember — a new learning, a campaign result, a fresh detail from your team — and it updates the Brain right there in the conversation. No app to open, no form to fill in.
FAQ
Frequently asked questions
What is Marketing Brain?
Marketing Brain is a living knowledge base of everything your marketing team knows — your ICP, your channels, your team, your metrics, and what’s worked before or didn’t — structured so AI can read it and reason with it. Connect it to Claude, ChatGPT, or Etropo’s AI Budget Buddy and you get answers grounded in your real business instead of generic textbook advice.
Why does AI give generic marketing advice without it?
AI is only as good as the context it has. Ask a generic assistant to plan your marketing budget and you’ll get a generic answer — it knows nothing about what you sell, who you sell to, or what worked last year. Marketing Brain supplies that context automatically, so the same AI starts reasoning from your actual situation.
Which AI tools does Marketing Brain work with?
Etropo’s AI Budget Buddy — in the app or through Slack — and outside assistants like Claude and ChatGPT via Etropo’s MCP server. The Brain isn’t locked inside one app: the same trusted company context travels with you wherever you work.
How long does setup take?
Minutes, not days. Enter your website URL and Marketing Brain researches it for you — drafting your company overview, customer personas, and positioning automatically. You review the drafts and keep what’s right; a guided four-step walkthrough takes you to your first scan.
What knowledge does Marketing Brain store?
Three folders, easy for humans to browse and purpose-built for AI to read: Company (who you are, your markets, personas, products, and go-to-market strategy), Marketing facts (metrics and targets, channels, team, contractors, and tech stack), and Learnings (what you’ve tried, what worked, what didn’t, and why). When you ask a question, the AI walks this exact tree before it answers.
How does Marketing Brain stay up to date?
Two ways, both automatic. It pulls fresh details from your budget — your tools, your team, your contractors, the markets you spend in — and keeps those notes current. And when something is missing or stale, like an undefined persona or a metric untouched for months, it flags an open question and asks the right person on your team to fill it in.
How is it different from an internal wiki or Notion?
A wiki or Notion is a blank page — you have to invent the structure yourself, and it goes stale the moment the team stops updating it. Marketing Brain ships with a ready marketing structure designed by experienced CMOs, so you don’t build it from scratch — you just fill in the blanks. On top of that, it’s structured specifically for AI to read, builds itself from your website, keeps itself current from your budget, and flags its own gaps — so it gets sharper over time instead of rotting.
Why a specialized Marketing Brain instead of a general company brain?
Because there’s no single generic company brain that serves every team well — what sales, finance, and marketing each need to capture is too different. Generic tools like Notion are a blank page: powerful, but you have to design the structure from scratch, which takes time and rarely captures what a marketing strategy actually needs. Marketing Brain gives marketing teams a ready structure — everything that should universally go into a marketing strategy, distilled from years of CMO experience. You don’t architect it yourself; you just complete the blanks and answer the right questions.
Can AI change or delete what’s written in the Brain?
No. AI can draft and suggest, but every fact is yours to edit, keep, or delete — the Brain never silently overwrites what you’ve written. A full, filterable change history shows who, or which AI, added every entry and when.
Is Marketing Brain free?
Yes. Marketing Brain is a free product from Etropo, the AI-native marketing budget software. Sign up, enter your website URL, and your Brain starts building itself in minutes.
Every AI chat starts from zero. Yours doesn’t have to.
Marketing Brain builds itself from your website in minutes — then every answer from Claude, ChatGPT, or Budget Buddy is grounded in your customers, your numbers, and what’s worked before. Free, from Etropo.