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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="20190815140621|13611" />
  </query-continue>
  <query>
    <recentchanges>
      <rc type="edit" ns="0" title="Search with Xapian Guide" pageid="2825" revid="13280" old_revid="12971" rcid="13621" timestamp="2019-10-16T14:38:34Z" />
      <rc type="edit" ns="10" title="Template:Download" pageid="2138" revid="13279" old_revid="12843" rcid="13620" timestamp="2019-10-09T08:19:16Z" />
      <rc type="edit" ns="0" title="Altering the &#039;Request a copy&#039; function" pageid="2904" revid="13278" old_revid="12829" rcid="13619" timestamp="2019-09-24T07:58:16Z" />
      <rc type="new" ns="3" title="User talk:Armen yeghoyan" pageid="2941" revid="13277" old_revid="0" rcid="13618" timestamp="2019-09-18T12:29:30Z" />
      <rc type="new" ns="2" title="User:Armen yeghoyan" pageid="2940" revid="13276" old_revid="0" rcid="13617" timestamp="2019-09-18T12:29:30Z" />
      <rc type="log" ns="2" title="User:Armen yeghoyan" pageid="0" revid="0" old_revid="0" rcid="13616" timestamp="2019-09-18T12:29:29Z" />
      <rc type="edit" ns="0" title="Authority Lists" pageid="1940" revid="13275" old_revid="12876" rcid="13615" timestamp="2019-09-17T17:38:30Z" />
      <rc type="edit" ns="0" title="Autocompletion" pageid="1941" revid="13274" old_revid="11000" rcid="13614" timestamp="2019-09-17T17:29:09Z" />
      <rc type="edit" ns="0" title="Jisc Publications Router" pageid="2879" revid="13273" old_revid="13272" rcid="13613" timestamp="2019-09-03T16:13:04Z" />
      <rc type="edit" ns="0" title="Jisc Publications Router" pageid="2879" revid="13272" old_revid="13271" rcid="13612" timestamp="2019-08-15T14:07:39Z" />
    </recentchanges>
  </query>
</api>