You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <recentchanges>
      <rc type="edit" ns="0" title="Региональный этап 2025" rcid="15142" pageid="1176" revid="15139" old_revid="13125" timestamp="2026-04-27T07:43:27Z" />
      <rc type="edit" ns="0" title="Спецкурсы Зима Весна 2026" rcid="15141" pageid="1326" revid="15138" old_revid="15135" timestamp="2026-04-22T09:37:05Z" />
      <rc type="edit" ns="0" title="Региональный этап 2026" rcid="15140" pageid="1290" revid="15137" old_revid="15136" timestamp="2026-04-22T07:50:38Z" />
      <rc type="edit" ns="0" title="Региональный этап 2026" rcid="15139" pageid="1290" revid="15136" old_revid="15130" timestamp="2026-04-22T07:50:22Z" />
      <rc type="edit" ns="0" title="Спецкурсы Зима Весна 2026" rcid="15138" pageid="1326" revid="15135" old_revid="15120" timestamp="2026-04-21T13:42:40Z" />
      <rc type="edit" ns="0" title="Городские олимпиады 2026" rcid="15137" pageid="994" revid="15134" old_revid="15133" timestamp="2026-04-21T13:35:45Z" />
      <rc type="edit" ns="0" title="Городские олимпиады 2026" rcid="15136" pageid="994" revid="15133" old_revid="15132" timestamp="2026-04-21T13:15:13Z" />
      <rc type="edit" ns="0" title="Городские олимпиады 2026" rcid="15135" pageid="994" revid="15132" old_revid="15131" timestamp="2026-04-21T13:14:20Z" />
      <rc type="edit" ns="0" title="Городские олимпиады 2026" rcid="15134" pageid="994" revid="15131" old_revid="15102" timestamp="2026-04-21T13:13:56Z" />
      <rc type="edit" ns="0" title="Региональный этап 2026" rcid="15133" pageid="1290" revid="15130" old_revid="15129" timestamp="2026-04-16T09:21:11Z" />
    </recentchanges>
  </query>
  <query-continue>
    <recentchanges rcstart="2026-04-16T09:17:48Z" />
  </query-continue>
</api>