Build your own AI brain
Generic answers usually come from missing context. Fix it once, in a file the AI reads every time.
Published
Lucija Tomšić
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Contents · 4 sections
01You keep re-explaining who you are
Every new chat starts from zero. You explain your business again, your tone again, the thing you already told it last week. The AI is not remembering you. It is guessing, and generic guesses produce generic output.
The fix is not a better prompt written from scratch each time. It is a written context file the AI reads every session, so the explaining happens once instead of every time.
02Three things, in order of effort
- One context fileA plain text or markdown file describing who you are, what you do, and how you want things written or built. The AI reads it first, every time.
- A folder it can searchPast work, examples and reference material, kept in a structure the AI can look through rather than a single chat's memory.
- Small instruction filesFor a task you repeat, a short file describing exactly how you want it done, so you stop re-explaining the same recurring job.
03Set it up in four steps
- Write the context file firstNot a prompt, a description: who you are, what you do, who you write or build for, and two or three things you always want done a certain way. A page is plenty to start.
- Put it where the AI actually reads itClaude Code and similar tools read a file like CLAUDE.md automatically at the start of a session. Check the docs of the tool you use for the exact filename and location.
- Add one recurring task as an instruction filePick the task you repeat most, such as a weekly report, a type of email or a kind of post, and write down exactly how you want it approached. Test it, then adjust the file, not the prompt.
- Only then add memory or a multi-step setupOnce the single context file works, more structure is worth the effort: a searchable folder, a second instruction file, eventually a small team of agents. Before that, it usually is not.
04Go deeper
- How to train Claude to write like youThe context-file approach, focused on writing voice.
- How to build a Claude skillThree ways to turn a recurring task into a reusable instruction file.
- Claude Code, no code requiredWhat the setup looks like if you have never opened a terminal.
- The Paperclip setup checklistWhat a small team of agents looks like, once one context file works.
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