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="20151223150556|12" />
  </query-continue>
  <query>
    <recentchanges>
      <rc type="edit" ns="0" title="メインページ" pageid="3" revid="22" old_revid="18" rcid="22" timestamp="2017-01-05T07:16:08Z" />
      <rc type="new" ns="0" title="東芝 REGZA Z700X" pageid="10" revid="21" old_revid="0" rcid="21" timestamp="2017-01-04T07:21:56Z" />
      <rc type="new" ns="10" title="テンプレート:search" pageid="9" revid="20" old_revid="0" rcid="20" timestamp="2017-01-04T07:21:45Z" />
      <rc type="new" ns="10" title="テンプレート:as" pageid="8" revid="19" old_revid="0" rcid="19" timestamp="2017-01-04T07:21:35Z" />
      <rc type="edit" ns="0" title="メインページ" pageid="3" revid="18" old_revid="12" rcid="18" timestamp="2016-03-06T15:33:32Z" />
      <rc type="edit" ns="0" title="パナソニック ロボット掃除機 RULO ルーロ" pageid="4" revid="17" old_revid="15" rcid="17" timestamp="2016-02-11T13:27:07Z" />
      <rc type="new" ns="0" title="パナソニック ロボット掃除機 RULO ルーロ MC-RS200" pageid="7" revid="16" old_revid="0" rcid="16" timestamp="2016-02-11T13:27:02Z" />
      <rc type="edit" ns="0" title="パナソニック ロボット掃除機 RULO ルーロ" pageid="4" revid="15" old_revid="6" rcid="15" timestamp="2015-12-23T15:42:39Z" />
      <rc type="edit" ns="0" title="洗濯乾燥機のメリットとデメリット" pageid="6" revid="14" old_revid="13" rcid="14" timestamp="2015-12-23T15:08:41Z" />
      <rc type="log" ns="0" title="洗濯乾燥機のメリット" pageid="6" revid="0" old_revid="0" rcid="13" timestamp="2015-12-23T15:06:10Z" />
    </recentchanges>
  </query>
</api>