Thank you for pointing out that from the original Chrome extension, the add-on inherited a file, api.js, which violates Firefox's privacy policies ... I have updated the add-on. Now no user data is collected on an external server. The webRequest APIs is needed only for requests to the header of the site you visit which allows you to scan and obtain which libraries or frameworks it uses ... As for your suggestions I have taken note and as soon as I can I will improve this add-on to Firefox
Best :)