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="2020-09-11T04:59:50Z|2304" />
  </query-continue>
  <query>
    <recentchanges>
      <rc type="log" ns="0" title="バニッシング加工" rcid="2314" pageid="0" revid="0" old_revid="0" timestamp="2021-04-13T06:27:33Z" />
      <rc type="new" ns="0" title="バニシング加工" rcid="2313" pageid="341" revid="2056" old_revid="0" timestamp="2021-04-13T06:26:35Z" />
      <rc type="edit" ns="3000" title="private:用語作成候補" rcid="2312" pageid="5" revid="2055" old_revid="2042" timestamp="2021-04-13T06:24:22Z" />
      <rc type="edit" ns="0" title="3次元内部構造顕微鏡" rcid="2311" pageid="339" revid="2054" old_revid="2053" timestamp="2020-09-11T05:35:27Z" />
      <rc type="edit" ns="0" title="3次元内部構造顕微鏡" rcid="2310" pageid="339" revid="2053" old_revid="2052" timestamp="2020-09-11T05:24:37Z" />
      <rc type="edit" ns="0" title="3次元内部構造顕微鏡" rcid="2309" pageid="339" revid="2052" old_revid="2050" timestamp="2020-09-11T05:23:52Z" />
      <rc type="log" ns="6" title="ファイル:ThreeDInterStructMicroscope.jpeg" rcid="2308" pageid="0" revid="0" old_revid="0" timestamp="2020-09-11T05:22:00Z" />
      <rc type="edit" ns="0" title="3次元内部構造顕微鏡" rcid="2307" pageid="339" revid="2050" old_revid="2049" timestamp="2020-09-11T05:18:38Z" />
      <rc type="edit" ns="0" title="3次元内部構造顕微鏡" rcid="2306" pageid="339" revid="2049" old_revid="2048" timestamp="2020-09-11T05:11:52Z" />
      <rc type="edit" ns="0" title="3次元内部構造顕微鏡" rcid="2305" pageid="339" revid="2048" old_revid="2047" timestamp="2020-09-11T05:07:17Z" />
    </recentchanges>
  </query>
</api>