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>
    <allredirects garcontinue="Большой_Dirty|1429" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1455" ns="0" title="Лопатобан" />
      <page pageid="1458" ns="0" title="Пользователь" />
      <page pageid="1543" ns="0" title="Панель Dirty для Firefox" />
      <page pageid="1635" ns="0" title="Панель Dirty для Internet Explorer" />
      <page pageid="1637" ns="0" title="Яндекс виджет: Большой Дёти" />
      <page pageid="1638" ns="0" title="Кармаскоп" />
      <page pageid="1710" ns="0" title="Delivery.d3.ru" />
      <page pageid="1711" ns="0" title="Science.d3.ru" />
      <page pageid="1712" ns="0" title="Mapporn.d3.ru" />
      <page pageid="1713" ns="0" title="Story.d3.ru" />
    </pages>
  </query>
</api>