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>
    <links gplcontinue="1|0|Edge_Messaging" />
  </query-continue>
  <query>
    <pages>
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      <page pageid="16347" ns="0" title="Best Practice for Designing a Rifidi APP" contentmodel="wikitext" pagelanguage="en" touched="2014-09-05T18:45:49Z" lastrevid="20018" counter="50139" length="5677" />
      <page pageid="445" ns="0" title="Developer&#039;s Guide" contentmodel="wikitext" pagelanguage="en" touched="2020-09-17T11:57:36Z" lastrevid="21528" counter="36851" length="1636" />
      <page pageid="16305" ns="0" title="Developer&#039;s Quick Start Reference" contentmodel="wikitext" pagelanguage="en" touched="2014-11-19T12:42:33Z" lastrevid="20460" counter="16412" length="910" />
      <page pageid="147" ns="0" title="Developer FAQ" contentmodel="wikitext" pagelanguage="en" touched="2008-11-19T17:58:28Z" lastrevid="1821" counter="30564" length="1428" />
      <page pageid="16340" ns="0" title="Development Jumpstarts" contentmodel="wikitext" pagelanguage="en" touched="2017-01-25T19:02:07Z" lastrevid="21428" counter="16755" length="576" />
      <page pageid="308" ns="0" title="Development Process" contentmodel="wikitext" pagelanguage="en" touched="2014-06-29T15:26:03Z" lastrevid="3079" counter="19274" length="189" />
      <page pageid="2" ns="0" title="Documentation Guidelines" contentmodel="wikitext" pagelanguage="en" touched="2014-06-30T22:10:44Z" lastrevid="19895" counter="47668" length="3152" />
      <page pageid="16363" ns="0" title="Edge LLRP Reader Management" contentmodel="wikitext" pagelanguage="en" touched="2017-01-05T12:19:02Z" lastrevid="21396" counter="39129" length="43397" />
      <page pageid="16343" ns="0" title="Edge Management" contentmodel="wikitext" pagelanguage="en" touched="2021-06-03T19:15:27Z" lastrevid="21557" counter="479942" length="38282" />
    </pages>
  </query>
</api>