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>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20250821001718" timestamp="2025-08-21T00:17:18Z" ns="0" title="Guide:Script Function" />
        <page value="20250821001718" timestamp="2025-08-21T00:17:18Z" ns="0" title="ContentTweaker:Fluid Support" />
        <page value="20250821001718" timestamp="2025-08-21T00:17:18Z" ns="0" title="Aura Cascade" />
        <page value="20250821001718" timestamp="2025-08-21T00:17:18Z" ns="0" title="ContentTweaker" />
        <page value="20250821001718" timestamp="2025-08-21T00:17:18Z" ns="0" title="ContentTweaker:TConstruct Support" />
        <page value="20250821001718" timestamp="2025-08-21T00:17:18Z" ns="0" title="ContentTweaker:BlockItem Support" />
        <page value="20250821001718" timestamp="2025-08-21T00:17:18Z" ns="0" title="Future Of Minetweaker" />
        <page value="20250821001718" timestamp="2025-08-21T00:17:18Z" ns="0" title="Guide:Comparison with MineTweaker 2" />
        <page value="20250821001718" timestamp="2025-08-21T00:17:18Z" ns="0" title="Commands:Ingame" />
        <page value="20250821001718" timestamp="2025-08-21T00:17:18Z" ns="0" title="Changelog" />
      </results>
    </querypage>
  </query>
</api>