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Tips and TricksOpen Prototo again

When you come back to your Mac and want to keep working on the same prototype:

  1. Open Terminal.
  2. Go to your project folder (replace myapp with your folder name):
cd myapp

In Prototo Desktop this whole page is one step: open the app and click your project under Recent. The rest below is the terminal flow.

  1. Start Prototo — the Simulator opens:
npx proto start
  1. Open a second Terminal tab or window. Go to the same folder and start your coding agent:
cd myapp
claude   # or: codex

Leave the first window running Prototo. Do all your prompting in the second window. Watch the Simulator.

That is the same setup as Prototo Desktop. You are not starting from scratch — just waking it back up.

On Mac, use File → New Tab in Terminal (or ⌘T) for the second window. Run cd myapp in that tab before starting the agent.

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