npx proto record captures your Simulator and hands it to Studio, where you wrap it in a 3D iPhone and export.

In Prototo Desktop: click Record

Click the Record button in the top right, tap through your prototype, then click it again to stop. Prototo uploads the clip and opens Studio in your browser.

In the terminal

With your Simulator running (Window 1), run:

npx proto record

The first time, it signs you in so your recording saves to your account (see Your account). Then it starts capturing:

Recording started — press Ctrl+C to stop.

Tap through your prototype in the Simulator. When you’re done, press Ctrl+C. Prototo saves the recording, uploads it, and opens Studio in your browser:

Recording saved — opening Studio
  https://prototo.app/studio/…

Wrap it. Export it. Post it.

Wrap and export

In Studio, your recording is dropped into a 3D iPhone. Angle the device, then export the finished clip to share wherever you like.