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>
    <allpages gapcontinue="Заглавная_страница" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1" ns="0" title="База знаний 2fox.org" contentmodel="wikitext" pagelanguage="ru" touched="2016-02-28T14:17:18Z" lastrevid="404" counter="203601" length="2772" />
      <page pageid="80" ns="0" title="Безопасность (как создать и хранить пароли)" contentmodel="wikitext" pagelanguage="ru" touched="2014-12-02T19:27:08Z" lastrevid="320" counter="7162" length="5157" />
      <page pageid="82" ns="0" title="Безопасность (пароли)" contentmodel="wikitext" pagelanguage="ru" touched="2014-12-02T19:27:08Z" lastrevid="318" counter="1028" length="115" redirect="" new="" />
      <page pageid="85" ns="0" title="Гарантия возврата денег" contentmodel="wikitext" pagelanguage="ru" touched="2015-07-06T16:40:30Z" lastrevid="384" counter="5325" length="1666" />
    </pages>
  </query>
</api>