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-continue>
    <alltransclusions gatcontinue="NotWorking" />
  </query-continue>
  <query>
    <pages>
      <page ns="10" title="Template:Cheats" missing="" />
      <page ns="10" title="Template:Cheats/Hacks" missing="" />
      <page ns="10" title="Template:Clear" missing="" />
      <page ns="10" title="Template:Disclaimer" missing="" />
      <page ns="10" title="Template:HighRise Gold 2026 Hack" missing="" />
      <page ns="10" title="Template:HighRise Gold Cheats 2026" missing="" />
      <page ns="10" title="Template:Infobox" missing="" />
      <page ns="10" title="Template:Infobox VG" missing="" />
      <page ns="10" title="Template:Infobox video game series" missing="" />
      <page pageid="10298" ns="10" title="Template:Dsp" />
    </pages>
  </query>
</api>