Casso
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Download Casso

Draw numbered boxes on your screen and send them to Claude Code, Codex, Cursor, or any agent that accepts images.

Mac available now / Windows coming soon / one license covers both

Download for Mac
Windows coming soon
  1. 1Open the zip and drag Casso to Applications.
  2. 2Launch the app and choose Sign In with Browser.
  3. 3Create an account or sign in - signing in on the app starts a 7-day free trial, or unlock a personal license for $29.

Annotations stay on your machine / 7-day free trial / $29 once / free updates through 1.x

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