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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>
    <logevents>
      <item logid="8" ns="0" title="Remote Imaging Servers" pageid="23" type="move" action="move" user="Jason" timestamp="2011-01-24T18:41:02Z" comment="More accurate title.">
        <move new_ns="0" new_title="Configuring Ignite for Remote Imaging of Servers" />
      </item>
      <item logid="7" ns="6" title="File:Cfengine.tar" pageid="13" type="upload" action="upload" user="Jason" timestamp="2011-01-07T16:42:06Z" comment="Base Cfengine 2.x configs." />
      <item logid="6" ns="6" title="File:Cfengine.tarball" pageid="12" type="upload" action="upload" user="Jason" timestamp="2011-01-07T16:35:01Z" comment="" />
      <item logid="5" ns="8" title="MediaWiki:Mainpage" pageid="4" type="patrol" action="patrol" user="Administrator" timestamp="2011-01-05T18:06:20Z" comment="">
        <patrol cur="9" prev="6" auto="1" />
      </item>
      <item logid="4" ns="2" title="User:Jason" pageid="0" type="newusers" action="create" user="Jason" timestamp="2011-01-05T17:57:57Z" comment="">
        <param>2</param>
      </item>
      <item logid="3" ns="8" title="MediaWiki:MainPage" pageid="3" type="patrol" action="patrol" user="Administrator" timestamp="2011-01-05T16:08:47Z" comment="">
        <patrol cur="7" prev="5" auto="1" />
      </item>
      <item logid="2" ns="8" title="MediaWiki:Mainpage" pageid="4" type="patrol" action="patrol" user="Administrator" timestamp="2011-01-05T16:08:24Z" comment="">
        <patrol cur="6" prev="0" auto="1" />
      </item>
      <item logid="1" ns="8" title="MediaWiki:MainPage" pageid="3" type="patrol" action="patrol" user="Administrator" timestamp="2011-01-05T16:06:41Z" comment="">
        <patrol cur="5" prev="0" auto="1" />
      </item>
    </logevents>
  </query>
</api>