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>
    <alllinks galcontinue="あごの骨砕き機" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="TO文庫" missing="" />
      <page ns="0" title="「無謀編1」「プレ編1」同時購入書き下ろしSS" missing="" />
      <page pageid="1378" ns="0" title="Dr.ケリー" />
      <page pageid="698" ns="0" title="D規模蒸気式発電機" />
      <page pageid="1126" ns="0" title="MAGIUS魔術士オーフェン" />
      <page pageid="408" ns="0" title="SSW" />
      <page pageid="3202" ns="0" title="Sorcerous Stabber ORPHEN 魔術士オーフェン" />
      <page pageid="4042" ns="0" title="VS.こち亀 こちら葛飾区亀有公園前派出所ノベライズアンソロジー" />
      <page pageid="146" ns="0" title="あいつがそいつでこいつがそれで" />
      <page pageid="3023" ns="0" title="あきれてものも言えねえぜ！" />
    </pages>
  </query>
</api>