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>
    <recentchanges>
      <rc type="edit" ns="0" title="MBSE Value" rcid="1164" pageid="41" revid="1166" old_revid="1144" timestamp="2023-12-08T07:49:58Z" />
      <rc type="edit" ns="0" title="MBSE Competencies" rcid="1163" pageid="136" revid="1165" old_revid="1164" timestamp="2023-03-08T11:34:22Z" />
      <rc type="edit" ns="0" title="MBSE Competencies" rcid="1162" pageid="136" revid="1164" old_revid="1163" timestamp="2022-10-11T11:20:34Z" />
      <rc type="edit" ns="0" title="MBSE Competencies" rcid="1161" pageid="136" revid="1163" old_revid="1156" timestamp="2022-10-11T11:20:05Z" />
      <rc type="log" ns="6" title="File:ISECF definition - why it matters.jpg" rcid="1160" pageid="0" revid="0" old_revid="0" timestamp="2022-10-11T11:16:43Z" />
      <rc type="log" ns="6" title="File:ISECF definition - System Analysis.jpg" rcid="1159" pageid="0" revid="0" old_revid="0" timestamp="2022-10-11T11:14:57Z" />
      <rc type="log" ns="6" title="File:ISECF definition - Description - Modelling.jpg" rcid="1158" pageid="0" revid="0" old_revid="0" timestamp="2022-10-11T11:13:05Z" />
      <rc type="edit" ns="6" title="File:Competence Indicators-Awareness.jpg" rcid="1157" pageid="206" revid="1159" old_revid="1155" timestamp="2022-10-11T10:16:51Z" />
      <rc type="edit" ns="6" title="File:ISECF Modelling Sys Analysis definition.jpg" rcid="1156" pageid="207" revid="1158" old_revid="1157" timestamp="2022-10-11T10:16:19Z" />
      <rc type="log" ns="6" title="File:ISECF Modelling Sys Analysis definition.jpg" rcid="1155" pageid="0" revid="0" old_revid="0" timestamp="2022-10-11T10:15:07Z" />
    </recentchanges>
  </query>
  <query-continue>
    <recentchanges rcstart="2022-10-11T10:11:31Z" />
  </query-continue>
</api>