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>
<allcategories>
<c size="8" pages="8" files="0" subcats="0" xml:space="preserve">About O3X</c>
<c size="1" pages="1" files="0" subcats="0" xml:space="preserve">About OpenZFS</c>
<c size="0" pages="0" files="0" subcats="0" xml:space="preserve">Getting and installing Arch</c>
<c size="3" pages="3" files="0" subcats="0" xml:space="preserve">Getting and installing O3X</c>
<c size="1" pages="1" files="0" subcats="0" xml:space="preserve">Help</c>
<c size="1" pages="1" files="0" subcats="0" xml:space="preserve">Integration</c>
<c size="2" pages="2" files="0" subcats="0" xml:space="preserve">Internet Relay Chat</c>
<c size="3" pages="3" files="0" subcats="0" xml:space="preserve">O3XWiki</c>
<c size="3" pages="3" files="0" subcats="0" xml:space="preserve">O3X development</c>
<c size="0" pages="0" files="0" subcats="0" xml:space="preserve">Pages with broken file links</c>
</allcategories>
</query>
</api>