You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information.
<?xml version="1.0"?>
<api>
  <query>
    <protectedtitles>
      <pt ns="0" title="Page flip maker" timestamp="2012-07-31T07:20:08Z" level="sysop" />
      <pt ns="3" title="User talk:RepairToolbox" timestamp="2012-06-12T16:52:42Z" level="sysop" />
      <pt ns="0" title="Community College Jobs And Boston" timestamp="2011-01-27T13:52:33Z" level="autoconfirmed" />
      <pt ns="0" title="Chat Free Chat Rooms" timestamp="2011-01-27T12:32:44Z" level="sysop" />
      <pt ns="0" title="Community College Fine Art Jobs" timestamp="2011-01-27T12:32:32Z" level="sysop" />
      <pt ns="0" title="Seattle Single" timestamp="2011-01-27T12:32:07Z" level="autoconfirmed" />
      <pt ns="0" title="Watch new movies online" timestamp="2010-11-10T17:36:09Z" level="sysop" />
      <pt ns="0" title="Acai berry diet" timestamp="2010-11-08T14:38:16Z" level="sysop" />
      <pt ns="0" title="Payday Loans" timestamp="2010-11-08T14:37:34Z" level="sysop" />
      <pt ns="0" title="Reverse Cell phone lookup" timestamp="2010-11-04T17:09:16Z" level="sysop" />
    </protectedtitles>
  </query>
</api>