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>
    <links gplcontinue="1|0|Create_Items" />
  </query-continue>
  <query>
    <pages>
      <page pageid="30" ns="0" title="Add Customer" touched="2016-11-14T12:48:16Z" lastrevid="913" counter="40026" length="3781" />
      <page pageid="2" ns="0" title="Authentication" touched="2015-10-14T13:15:23Z" lastrevid="752" counter="10535" length="393" />
      <page pageid="12" ns="0" title="Check Key" touched="2018-03-29T09:59:12Z" lastrevid="1115" counter="9571" length="831" />
      <page pageid="6" ns="0" title="Connecting to the API" touched="2020-10-01T14:42:08Z" lastrevid="1179" counter="24433" length="1962" />
      <page pageid="213" ns="0" title="Create Assets" touched="2020-04-05T16:43:26Z" lastrevid="1153" counter="24102" length="5629" />
      <page pageid="223" ns="0" title="Create Category" touched="2016-11-14T12:44:27Z" lastrevid="902" counter="21878" length="3297" />
      <page pageid="27" ns="0" title="Create Company Attachment" touched="2023-11-21T09:21:12Z" lastrevid="1190" counter="9199" length="553" />
      <page pageid="291" ns="0" title="Create Company Attachment Folders" touched="2018-03-12T11:03:23Z" lastrevid="1090" counter="13552" length="3001" />
      <page pageid="285" ns="0" title="Create Custom List Item" touched="2018-03-12T11:39:09Z" lastrevid="1109" counter="9925" length="3019" />
      <page pageid="232" ns="0" title="Create Customer Sites" touched="2017-01-31T14:04:02Z" lastrevid="952" counter="22383" length="4490" />
    </pages>
  </query>
</api>