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SESSION 12 · UNDER THE HOOD

How Apps Talk to Claude

Look behind the curtain of every app built on Claude — the standing instructions the user never sees — and then write your own, on paper, for a bot the other person in the room actually needs.

The big idea

Every app built on Claude sends two things: a **system prompt** — standing instructions the user never sees — and then your message. The moment you can write the invisible half, you have stopped being a user of AI products and started designing them.

What the two of you do
  1. Two messages arrive; you only wrote one
  2. What actually goes in the invisible half
  3. Why the invisible half explains almost everything
  4. You just became the builder
  5. 5 prompt cards to run on the grown-up's account, and the Which line belongs in a system prompt? game
And what you keep
Save the funnier of the two cards — the bot one of you designed for the other — into the Memory Box project, with the patch line marked, the mark you each gave out of five, and whether the patch held when you fired the same attack at it a second time.
The bonding moment

Design the Bot the Other One Needs

Mechanic: parent as client. The step-by-step — who says what, in what order — comes with the full camp.

What you will both know afterwards
  • Every app built on Claude sends a system prompt — standing instructions you never see — plus your message.
  • The invisible half is why one model can feel like a hundred different products.
  • Good cards are boring and specific: role, one job, the nevers, tone, and what to say when it does not know.
  • A system prompt is a strong steer, not a locked door — real products add checks behind it.
  • Instructions shape behaviour; they cannot add knowledge the model does not have.

This session is part of the full camp.

Sessions 2 to 15 come with the camp — the full text, every prompt card, the bonding moment written out step by step, the game, the grown-up corner, and the Memory Box save that ends each one. Price: $119 once (about ₹10,300), or free if your child already takes 1:1 classes with us.

There is no login on this site to hide it behind and no checkout to click — you message Manisha, she sends you the camp.

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Where you have got to0 of 15 sessions· first badge lands when a whole unit is done
  • Chat Like a Pro — 0 of 5
  • Claude's Superpowers — 0 of 5
  • Under the Hood — 0 of 3
  • Capstone — 0 of 2
An independent course about Claude, written by CodersBee. We are not affiliated with Anthropic, and nothing here is endorsed by them. The camp runs on a grown-up's own free Claude account — Claude.ai is for adults, 18+.