The docs have a reference to an old an seemingly abandoned firefox extension https://help.kagi.com/kagi/community-addons/index.html#firefox-context-menu-add-on
The extension hasn't been updated in two years and more importantly seems to have been superseded by the official kagi extension. Which is why I suggest references to the unofficial one are removed/updated.
I think most should references to be to official kagi products or for the community add-ons be to actively maintained/relevant community projects.
