Living file
Northwind
Agreed price
$1,200 a month from June, 10% off the first three months.
Email, May 14Open question
Who signs the renewal now that Sara has left?
#northwindA company brain: everything you know, one question away.
Brainstack reads the tools you connect and keeps a living file for every client, each fact with its source. Your agents work from it, and your team asks it from the AI they already use.
You choose what it reads. Nothing else.
Switch on the tools where your company already writes things down. The brain reads those and only those.
Every client, on one page.
Where things stand, what was agreed, what you promised and what is still open. Tap any fact to see where it came from.
NW
Northwind
A space for every team. A key for every person.
Split the brain into spaces, like shelves in a room. Each space has its own sources and its own list of who can open it.
Clients
OwnerFinanceSales
Can openNot in this role
Finance
OwnerFinance
Can openNot in this role
Marketing playbooks
OwnerMarketingSales
Can openNot in this role
Team handbook
Everyone
Can openNot in this role
Same question. Different permissions.
The brain answers each person with what their role allows, whether they ask in Brainstack or from their own Claude or ChatGPT.
What's our margin with Northwind?
AN
Anna
Has access31% this quarter, 4 points down while the launch discount runs. It goes back to normal in September.
Xero · Q3Email, May 14
LE
Leo
No accessMargins live in the Finance space, which your role can't open. Here's the account: renewal on November 30, proposal under review.
Finance space hidden for SalesHubSpot
Agents that already know the answer.
Every agent starts its day from the same brain, so it uses the price you agreed and the words your client used.
Billing and collections
$1,08010% off applied, from the email of May 14
Knows the price you agreed, not the one on your list.
Customer support
"Can I get the October invoice again?"Sent to the finance inbox, as agreed in September.Source: #northwind
Answers only from your docs, and says where each answer came from.
Meta Ads manager
3 new ad variations, ready for your yesWritten in your brand voice, with this month's offer.Source: Marketing playbooks
Writes like your brand because it read your brand.
Meet the Meta Ads managerProjects that remember everything.
A project keeps the tasks, the files and the people and agents working on it in one place, inside the brain.
- Tasks with an owner and a date, for people and agents alike.
- The files that matter, linked from wherever they already live.
- Ask "where are we?" and get today's answer, not last week's.
Brightline Studio · Website relaunch
Tasks
- Approve the new homepage copyMAMarta
- Draft 6 launch postsCopywriter
- Send the invoice for phase 2Billing
- Confirm launch date with the clientLELeo
Files
- Homepage, final
- Copy deck v3
- Launch checklist
- Scope email, Sep 9
Keep your AI. Give it your company.
Each person keeps using Claude, ChatGPT, Gemini or Cursor. Now it answers with your clients, prices and decisions, and only what their role allows.
1
Copy your brain's address
Every company brain has one, on its own server.
https://brain.example.com/mcpExample address. Yours appears in your dashboard.
2
Paste it into your AI
In the connectors or tools settings of the app you already use.
ClaudeChatGPTGeminiCursor
3
Sign in, and ask
With your Brainstack account. No API keys to share, and nobody gets more than their role.
BetaHow it works, plainly. AI apps speak a common standard, called MCP, for plugging into other tools. Your brain speaks it too. Today your team's AI can reach knowledge, tasks and projects.
What did we promise Northwind for Q4?
Brainstack · Clients space
Two things, both still open:
- You send the Q4 roadmap before November 15 (meeting notes, Oct 2).
- Reports stay in English and Spanish (onboarding, March). Worth confirming, since Sara has left.
And our margin on the account?
Finance space · not in your role
I can't see margins with your access. Anna in Finance can.
Questions, answered.
Is this just ChatGPT with my files?
No. ChatGPT answers from what you paste into one chat. The company brain reads the tools you connect, keeps one living file per client with a source for every fact, updates itself every weekday evening and answers each person with only what their role allows. Agents and your team's own AI work from the same brain.
What does it read?
Only the sources you connect, such as Gmail, Google Drive, Google Docs, Notion, HubSpot, Slack or Microsoft Teams. You choose each source and the space it goes into. Nothing else is read.
How does it stay up to date?
Every weekday at 19:00 it brings active clients up to date from your connected sources, and once a week it checks for information that has gone stale.
Who can see what?
You set permissions per person, per role and per knowledge space. Finance can see margins; Sales sees the account but not the margin. The same rule applies when someone asks from Claude, ChatGPT, Gemini or Cursor.
Where does my data live?
On a server only your company uses, with encrypted backups every 6 hours. Your AI provider processes what an agent or a person sends it, under the terms of your plan.
Do you have SOC 2 or ISO 27001?
Not yet. What we do have: one server per customer, per-person permissions, approvals before anything leaves, a record of what each agent did, and GDPR terms.
What is MCP, and do I need to understand it?
No. MCP is a standard way for AI apps to plug into other tools. You paste one address into Claude, ChatGPT or Cursor and sign in. For Gemini, an admin adds it once in Gemini Enterprise (see how). Team AI access is in beta and today covers knowledge, tasks and projects.
Is the brain included in my plan?
Yes. Every plan includes the company brain. Plans start at $99 per month, plus the AI plan your company already pays for.