Murat Bayral4m readHow to work hyper efficiently with a second brain

AI forgets your client the second you close the chat. Every new conversation starts from zero, so you paste the same context in again. Who they are, what they sell, what they said no to last month.
I stopped doing that. Every client I work with now has a second brain. A set of plain text files that the AI reads before it answers me. No plugin, no subscription, no new tool to learn.
What it actually is
3 layers. One for you, one for your company, one for each client. The layers are wired together through a single index file, so the AI can see how they connect.
That wiring is the part that matters. On their own, plain text files are a pile nobody reads. The index tells the AI which file to open for what, and it turns folders into a system.
The folder structure
second-brain/
├── INDEX.md the wiring. read this first, every time
├── me/
│ └── ME.md who you are, how you work, what you refuse
├── company/
│ ├── COMPANY.md what the company is and sells
│ ├── SERVICES.md what you deliver, scope boundaries
│ └── RATES.md pricing, terms, payment rules
└── clients/
├── client-name/
│ ├── CLIENT.md who they are, tone, industry, people
│ ├── PROJECTS.md live work, status, deadlines
│ ├── DECISIONS.md what was agreed, and when
│ └── MEETINGS.md running notes, newest at the top
└── another-client/
└── ...One folder per client. Same 4 files inside every one, so the AI always knows where to look.
The prompt
Fill in the 4 blanks at the top, paste it into whatever you use, and it writes the whole set for you.
You are helping me build a client second brain: a set of plain text files
that any AI tool can read before it answers me.
MY DETAILS
Name and role: [YOUR NAME AND WHAT YOU DO]
My company: [COMPANY NAME AND WHAT IT SELLS]
Tools I work in: [e.g. Figma, Claude Code, Notion]
The client this is for: [CLIENT NAME, INDUSTRY, WHAT THEY SELL]
BEFORE YOU WRITE
Ask me up to 5 questions whose answers would change what goes in these
files. Then write everything in one go, no check ins.
WHAT TO BUILD
Generate the full contents of the files below, in markdown, one after
another, with the file path as a heading above each one.
INDEX.md
One line saying what this second brain is. A map of every file and what
it is for. A rule at the top telling the AI to read this file first, then
ME.md, then COMPANY.md, then the client folder.
me/ME.md
How I work, what I am good at, what I hand off, what I refuse to do,
how I like answers written back to me.
company/COMPANY.md, company/SERVICES.md, company/RATES.md
What the company is. What we deliver and where scope stops. Prices,
payment terms, and anything that is never given away free.
clients/[client]/CLIENT.md
Who they are, what they sell, who the people are, how they talk, what
they have already said no to.
clients/[client]/PROJECTS.md
Live work, status, next deadline, what is blocked.
clients/[client]/DECISIONS.md
One line per decision with the date. What was agreed and why.
clients/[client]/MEETINGS.md
Running notes, newest at the top, date on every entry.
RULES
Plain English, short lines, no marketing language.
Every file opens with one sentence saying what it is for.
Every decision and meeting note carries a date.
Where you do not have the information, write [TO FILL] and move on.
Never invent a fact about me, my company, or the client.
FINISH WITH
A short setup note: where to save the folder, how to point my AI tool at
it, and what to update after every client call.How to run it
Fill the blanks, answer the questions it asks, save what it gives you into the folders above. Point your AI tool at the folder. Then update DECISIONS.md and MEETINGS.md after every call, which takes about 2 minutes.
Start every new session by telling it to read INDEX.md first. That one line is the difference between a memory and a mess.
Why the short link is 02ui.com/hyper
I put this page on 02ui.com/hyper because that is what it does to a working week. 2 minutes of notes after a call buys you back the 10 minutes of re-explaining you would spend at the start of every session that follows. Over 4 clients and a few sessions a day, that is most of an afternoon.
Hyper efficient is the point. You do the setup once per client, then the AI starts every conversation already knowing the tone, the deadline, and the thing they said no to in March.
If you want the personal version of this first, the one for you rather than your clients, read second brain for Claude and build that layer before you add clients on top.
Start with your messiest client. That is the honest test. If you build a better version of this, I want to see it.
Version or fork it on GitHub.