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>
    <recentchanges rccontinue="20150427152053|242" />
  </query-continue>
  <query>
    <recentchanges>
      <rc type="new" ns="0" title="秋田禎信インデックス:秋田禎信インデックス" pageid="212" revid="454" old_revid="0" rcid="252" timestamp="2024-03-25T06:24:10Z" />
      <rc type="log" ns="2" title="利用者:Sysop" pageid="0" revid="0" old_revid="0" rcid="251" timestamp="2024-03-25T06:23:34Z" />
      <rc type="edit" ns="0" title="秋田禎信の著作一覧" pageid="130" revid="453" old_revid="452" rcid="250" timestamp="2017-01-28T15:36:26Z" />
      <rc type="edit" ns="0" title="秋田禎信の著作一覧" pageid="130" revid="452" old_revid="450" rcid="249" timestamp="2017-01-28T15:31:21Z" />
      <rc type="log" ns="2" title="利用者:そうまる" pageid="0" revid="0" old_revid="0" rcid="248" timestamp="2017-01-28T15:26:26Z" />
      <rc type="edit" ns="0" title="秋田禎信BOX" pageid="129" revid="451" old_revid="259" rcid="247" timestamp="2015-11-30T22:02:22Z" />
      <rc type="log" ns="2" title="利用者:Testes" pageid="0" revid="0" old_revid="0" rcid="246" timestamp="2015-11-30T21:59:21Z" />
      <rc type="edit" ns="0" title="秋田禎信の著作一覧" pageid="130" revid="450" old_revid="449" rcid="245" timestamp="2015-10-25T01:11:59Z" />
      <rc type="edit" ns="0" title="秋田禎信の著作一覧" pageid="130" revid="449" old_revid="431" rcid="244" timestamp="2015-05-09T00:10:30Z" />
      <rc type="edit" ns="0" title="巡ル結魂者" pageid="116" revid="448" old_revid="443" rcid="243" timestamp="2015-05-08T23:58:50Z" />
    </recentchanges>
  </query>
</api>