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="2014-08-28T09:24:04Z|340" />
  </query-continue>
  <query>
    <recentchanges>
      <rc type="edit" ns="0" title="Register iSMS Account for Free" rcid="350" pageid="9" revid="349" old_revid="332" timestamp="2017-09-06T06:37:31Z" />
      <rc type="edit" ns="0" title="Purchase SMS Credit" rcid="349" pageid="15" revid="348" old_revid="347" timestamp="2017-09-06T06:35:31Z" />
      <rc type="edit" ns="0" title="Purchase SMS Credit" rcid="348" pageid="15" revid="347" old_revid="138" timestamp="2017-09-06T06:34:34Z" />
      <rc type="edit" ns="0" title="Top Up SMS Credit Upon Payment Done" rcid="347" pageid="58" revid="346" old_revid="278" timestamp="2017-09-06T06:32:11Z" />
      <rc type="edit" ns="8" title="MediaWiki:Sidebar" rcid="346" pageid="2" revid="345" old_revid="339" timestamp="2017-09-06T06:24:03Z" />
      <rc type="edit" ns="0" title="Reload 10 Free SMS Credit" rcid="345" pageid="108" revid="344" old_revid="343" timestamp="2017-09-05T09:26:01Z" />
      <rc type="edit" ns="0" title="Reload 10 Free SMS Credit" rcid="344" pageid="108" revid="343" old_revid="338" timestamp="2017-09-05T09:25:47Z" />
      <rc type="edit" ns="0" title="Main Page" rcid="343" pageid="1" revid="342" old_revid="340" timestamp="2017-09-05T09:16:03Z" />
      <rc type="edit" ns="0" title="Bulk SMS Pricing" rcid="342" pageid="90" revid="341" old_revid="240" timestamp="2015-12-11T08:01:44Z" />
      <rc type="edit" ns="0" title="Main Page" rcid="341" pageid="1" revid="340" old_revid="326" timestamp="2014-12-22T07:58:10Z" />
    </recentchanges>
  </query>
</api>