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Browser extension

Cuetta for YouTube privacy

Updated 8 November 2026

This page covers the Cuetta for YouTube extension for Chrome, Edge, Brave and Firefox. It explains what the extension reads, what it sends to Cuetta, and what is kept.

In short

  • It only works on YouTube, YouTube Studio and cuetta.com.
  • It reads what's on the page you open, so it can show scores for it.
  • It never posts, edits or deletes anything on your channel. In Studio it fills a box only when you press Use or Add, and nothing is saved until you press Save.
  • Your data is never sold or used for ads.

Kept in your browser

  • Your sign-in key for your Cuetta account.
  • Your settings, such as the Only outliers switch and whether the Studio card is open.

Sent to Cuetta

  • The ids of videos and channels on the YouTube page you're viewing, with the public numbers YouTube shows, such as views and upload date. These are used to work out scores.
  • In YouTube Studio, the keyword and tags when you check a video.
  • The title, description and tags when you press Improve with AI.
  • Questions you ask in the Ask tab.
  • Videos you save and channels you follow.

What Cuetta keeps

  • A scrambled copy (hash) of your sign-in key, the browser name, when you connected and when it was last used. The key itself is never stored.
  • How many lookups you made each day, to apply daily limits.
  • Public YouTube data about videos and channels. It's shared by everyone and not linked to you.
  • Your Ask questions and answers, in your Ask Cuetta history.
  • The videos you saved and the channels you follow.
  • The pages you visit are not kept as a history linked to you.

Who else is involved

  • Anthropic writes the answers for Improve with AI and Ask. It gets the text needed for that answer.
  • YouTube data comes from YouTube API Services, run by Google.
  • Cuetta runs on Vercel (website) and Supabase (database).

What it never does

  • Read your YouTube or Google password or sign-in cookies.
  • Read any site other than YouTube, YouTube Studio and cuetta.com.
  • Run code downloaded from anywhere else. All its code ships inside the extension.
  • Sell your data or show you ads.

Your choices

  • Disconnect a browser in Settings, under Account. Its key stops working at once.
  • Remove the extension to delete everything it kept in your browser.
  • Delete your Cuetta account in Settings to remove what Cuetta keeps.

Cuetta uses YouTube API Services. Using it means you agree to the YouTube Terms of Service. Google's Privacy Policy explains how Google handles data.

Questions about privacy?

Contact us