Please see the Add-On documentation
This repository contains a DocumentCloud Add-On that replicates the behavior of Klaxon, which allows you to monitor web pages for changes on sections of the site that might be newsworthy. It allows you to receive email alerts when a modification to the page has been made, and a snapshot of the page is made on the Internet Archive automatically.
To get started with Klaxon, copy the following code to a new bookmark:
javascript:(function(){document.body.appendChild(document.createElement('script')).src='https://documentcloud-klaxon.s3.amazonaws.com/inject.js';})();
and then save it to your bookmarks. Visit a page you want to monitor and click on the bookmarklet to activate Klaxon.