This Firefox add-on does not collect any user data. However, it makes requests to GitHub (raw.githubusercontent.com) to retrieve privacy data about Scratch projects and users, and it makes requests to the Scratch API (api.scratch.mit.edu) to get general information (eg project title).
This sends information about which project or user you are viewing, and GitHub or Scratch could potentially combine this with your IP address or other information about your system.

We highly recommend you read Scratch's privacy policy (https://scratch.mit.edu/privacy_policy) and the GitHub Privacy Statement (https://docs.github.com/en/site-policy/privacy-policies/github-privacy-statement).