Araptus Shared Brain: A Shared Second Brain
In development — early access
A shared second brain for your team: one folder of company knowledge that your people and your AI read and improve together. In development, with early access.
In development
Araptus Shared Brain is a shared second brain for your team: one folder of company knowledge that your people and your AI read, question and improve together.
It's in development now, and we're opening early access to a small number of teams.
Why a Second Brain Stops at One Person
A second brain works brilliantly for the person who built it. It lives on their machine, in their editor, with their AI. We use one to run this company, and we wrote about the Obsidian company brain behind it.
The moment a teammate needs it, the cracks show. You're emailing files, sharing a drive that drifts out of date, or teaching someone git. The knowledge is there; the team can't get to it.
How a Shared Brain Works
One folder, one source of truth
Your knowledge stays plain markdown in a git repository with full history. Everyone works in the same copy, and nothing gets duplicated.
Ask it together
Anyone on the team can start a conversation with an AI that reads the brain. Teammates can follow along, join in and steer it.
Changes wait for a yes
When the AI edits the brain, the change is held for review. Someone approves it or throws it away, and nothing silently overwrites anyone's work.
Permissions the system enforces
Who can read or change each folder is enforced by the software, not requested in a prompt. "Please don't read the finance folder" is not a control; a locked folder is.
Your repo, your key
The brain lives in a repository you own, and AI usage runs on your own model key.
Many heads, one brain.
What Stays Out of the Brain
A shared brain holds how your business works: processes, decisions, your voice, the answers new people keep asking for. It doesn't hold your records.
Leads, invoices, estimates and customer lists stay in the systems built to hold them, like Doon. The brain can refer to them without becoming a copy of them.
Security Comes First
Security is the governing design constraint. Where a convenience and a control conflict, the control wins.
Access is enforced rather than requested, and every change is reviewable and reversible. The security foundations are built and tested before the collaborative features that sit on top of them.
Where It Is Today
Araptus Shared Brain is in development, and there's nothing to buy yet. We're building the foundations first and working with a small number of early-access teams whose knowledge already lives in markdown.
It sits alongside Cortex, our knowledge engine, which already gives a single brain its memory and search.
Want Early Access?
If your team already keeps its knowledge in markdown and wants to work in it together, talk to us.
