Foxhand does not send browsing data to the developer or to third parties and contains no analytics or tracking.
The add-on exchanges browsing data with the companion helper app on your own computer, through Firefox native messaging. The helper makes that data available only to programs you connect to it on your computer (by default it listens on localhost and requires a secret token that the add-on generates). That data can include tab URLs and titles, page content, screenshots, bookmarks, history, downloads, cookies for a tab, and notes the AI saves in the add-on. The helper sends data only when one of those programs asks for it.
Firefox's data-collection labels on this listing ("browsing activity", "website content" and so on) describe this exchange with programs on your computer, not collection by the developer.
If you connect an AI tool that uses a cloud service, that tool may send what it reads to its provider under that provider's own privacy policy. That's outside this add-on's control.
Starting with version 0.5.6, the add-on requests https://foxhand-popup-endpoint.pages.dev/popup.json on startup and every four hours to check for occasional announcements. The endpoint is hosted on Cloudflare Pages. These requests include standard HTTPS connection metadata, such as your IP address, but omit credentials and referrers and do not include browsing data, saved announcement IDs, or a user identifier. Cloudflare processes requests under its own privacy policy: https://www.cloudflare.com/privacypolicy/.
Settings (port, token, toggles) and the IDs of announcements already displayed are stored locally in Firefox extension storage. Uninstalling the add-on removes them.