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>
    <pages>
      <page ns="0" title="Link title" missing="" />
      <page ns="0" title="SIC General Failure and &quot;T get event: bad socket&quot; erros" missing="" />
      <page ns="0" title="There are two ways to connect a CMM CLI:" missing="" />
      <page pageid="118" ns="0" title="Gaia VRRP setup guide" />
      <page pageid="263" ns="0" title="asg policy - command" />
      <page pageid="213" ns="0" title="centos 6.5 repo" />
      <page pageid="212" ns="0" title="centos 6.5 repo yum file" />
      <page pageid="17" ns="0" title="fw log command line example" />
      <page pageid="220" ns="0" title="r80 api notes" />
    </pages>
  </query>
</api>