The brain is waking up
Loading the ARCAS second brainThe brain is waking up
Loading the ARCAS second brainThis is a visual map of the ARCAS playbook library. The reading list on the playbook page is the accessible alternative and lists every playbook in reading order.
People don’t fail processes.
Processes fail people.
People have context. AI has speed and memory. Systems bridge that gap.
Your second brain, built on Founder OS
Every skill and every function, wired into one map your AI can read. The brain stays yours and moves with you. The tools around it are yours to swap.
The brain is yours and it moves with you. The hands around it are yours to swap.
Your second brain: 27 connected skills and concepts. The tools around it are yours to swap: Where it runs, Knowledge, Automation, Scheduling, Email.What your second brain runs
Organised by function, with prebuilt skills inside each and wired across them, the way your own business runs. Scroll to walk through it.
Sales & growth
Scoped, priced, and written in your voice.
Reads from your second brain
“A proposal that mirrors the client's own words wins more than one that describes the service.”
First lines that earn a reply.
Reads from your second brain
“Emails that sound like you sent them, not like a marketing tool did.”
Each new lead captured the same way, ready when you write the proposal.
Reads from your second brain
“Captures the minimum prospect intel in one short flow, so the next time you write a proposal the context exists at a predictable path instead of scattered across your notes.”
A clean list before outreach, so every name is worth the message.
Reads from your second brain
“A list full of duplicates and half-filled rows turns a focused outreach week into busywork. Scoring and de-duping it up front means every row you contact is worth contacting.”
Marketing & content
One idea, shaped for every channel.
Reads from your second brain
“One piece of thinking, multiplied across every channel without rewriting it from scratch.”
Your point of view, in your words.
Reads from your second brain
“Posts grounded in your actual situation this week, written in your voice.”
One theme turned into a campaign that knows who it is for.
Reads from your second brain
“The gate is the value. It forces audience and objective clarity before any draft, which is what makes the output usable on the first attempt.”
Reviews and DMs answered in the right voice, fast.
Reads from your second brain
“A reply in the wrong voice erodes trust. This makes the right-voice reply the default rather than the careful effort.”
Operations & delivery
The work documented so the next person just runs it.
Reads from your second brain
“A process documented so it runs without the founder in the room.”
Where things stand, before they ask.
Reads from your second brain
“Clients kept informed without writing from scratch each time, so the relationship never goes silent.”
Walk in knowing what you last agreed and what is still open.
Reads from your second brain
“A brief built from your own prior context, not a generic one. Knowing what you already committed to with this person is what makes the meeting productive.”
A last pass before anything client-facing leaves your laptop.
Reads from your second brain
“Composes four checks that are easy to skip individually under deadline pressure into one pass, so nothing ships with an AI phrase, missing asset, or unreviewed blind spot.”
Strategy & finance
The way you weigh a call, reused.
Reads from your second brain
“Breaks the loop of circling the same call by naming what you are choosing and what each option costs.”
The numbers under the deal, before you commit.
Reads from your second brain
“The math shown with its assumptions and scenarios, not a single number you can misread.”
The market read grounded in what you already know.
Reads from your second brain
“Grounds competitive and market analysis in your actual position and prior knowledge, rather than a generic table that ignores what you already know or have decided.”
A messy bank export turned into numbers the brain can read.
Reads from your second brain
“A bank or accounting CSV is unreadable to the OS as-is. This turns one export into a clean markdown mirror your other skills can cite, without ever touching the source system.”
This is 1% of the ARCAS Brain.
Create a second brain for yourself and your company. The same brain, set up on your context and the way you already work.
One folder, set up on your laptop in Claude Code or Codex. No account.