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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>
    <allcategories accontinue="Articles_awaiting_verification_from_March_2014" />
  </query-continue>
  <query>
    <allcategories>
      <c size="1" pages="1" files="0" subcats="0" xml:space="preserve">&quot;Part of a series on&quot; templates</c>
      <c size="2" pages="2" files="0" subcats="0" xml:space="preserve">Advanced Placement</c>
      <c size="1" pages="1" files="0" subcats="0" xml:space="preserve">Alert templates</c>
      <c size="0" pages="0" files="0" subcats="0" xml:space="preserve">All articles awaiting verification</c>
      <c size="1" pages="1" files="0" subcats="0" xml:space="preserve">All pages needing cleanup</c>
      <c size="0" pages="0" files="0" subcats="0" xml:space="preserve">All pages needing factual verification</c>
      <c size="1" pages="1" files="0" subcats="0" xml:space="preserve">Alumni</c>
      <c size="14" pages="14" files="0" subcats="0" xml:space="preserve">Article message templates</c>
      <c size="8" pages="8" files="0" subcats="0" xml:space="preserve">Article message templates with missing parameters</c>
      <c size="0" pages="0" files="0" subcats="0" xml:space="preserve">Articles awaiting verification</c>
    </allcategories>
  </query>
</api>