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HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <exturlusage>
      <eu pageid="389259" ns="2" title="User:KGill/Sandbox" url="http://www.mediawiki.org/wiki/Extension:Loops" />
      <eu pageid="6848" ns="3" title="User talk:Feldmahler/archive" url="http://www.mediawiki.org/wiki/Extension:Multilang" />
      <eu pageid="509234" ns="10" title="Template:Inc" url="http://www.mediawiki.org/wiki/Extension:Score" />
      <eu pageid="6848" ns="3" title="User talk:Feldmahler/archive" url="http://www.mediawiki.org/wiki/Help:$wgGroupPermissions" />
      <eu pageid="85084" ns="12" title="Help:ページの編集" url="http://www.mediawiki.org/wiki/Help:Editing/ja" />
      <eu pageid="85083" ns="12" title="Help:ページの作成" url="http://www.mediawiki.org/wiki/Help:Starting_a_new_page/ja" />
      <eu pageid="193056" ns="3" title="User talk:Feldmahler" url="http://www.mediawiki.org/wiki/Localisation" />
      <eu pageid="63171" ns="3" title="User talk:Feldmahler/archive20" url="http://www.mediawiki.org/wiki/Manual:$wgNoFollowDomainExceptions" />
      <eu pageid="5630" ns="1" title="Talk:Main Page/archive" url="http://www.mediawiki.org/wiki/Manual:FAQ#How_do_I_hide_the_main_page_title.3F%7C" />
      <eu pageid="15085" ns="3" title="User talk:Feldmahler/archive5" url="http://www.mediawiki.org/wiki/Manual:MediaWiki_hooks" />
    </exturlusage>
  </query>
  <query-continue>
    <exturlusage euoffset="10" />
  </query-continue>
</api>