Badge.user.js

// ==UserScript==
// @name        LighthouseBadge
// @namespace   http://fluidapp.com
// @description Adds a badge showing the number of open tickets assigned to you.
// @include     *
// @author      Adam Tucker http://adamjt.net
// ==/UserScript==

// How often to check for new tickets in milliseconds
var updateInterval = 300000;
var lh_api = "__YOUR__PERSONAL__API__KEY__";

updateBadge();

function updateBadge () {
  xhttp=new XMLHttpRequest();

  // Customize this API call to your needs http://lighthouseapp.com/api
  xhttp.open("GET","/tickets.xml?q=responsible%3Ame%20state%3Aopen", false, lh_api);
  xhttp.send("");
  xmlDoc=xhttp.responseXML;
  myOpenTickets = xmlDoc.getElementsByTagName("ticket").length;
  if (myOpenTickets > 0 ) {
    if (myOpenTickets == 30) {
      loadNextPage = true;
      pageNumber = 2;
      while (loadNextPage == true) {
        xhttp.open("GET","/tickets.xml?q=responsible%3Ame%20state%3Aopen&page=" + pageNumber, false, lh_api);
        xhttp.send("");
        xmlDoc=xhttp.responseXML;
        moreTickets = xmlDoc.getElementsByTagName("ticket").length;
        myOpenTickets += moreTickets;
        pageNumber++;
        if (moreTickets < 30) {
          loadNextPage = false;
        }
      }
    }
    window.fluid.dockBadge = myOpenTickets;
  }
  setTimeout(updateBadge, updateInterval);
}