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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>
    <alllinks galcontinue="Document_GPF_activities_by_Cedric_David" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Client Side Technology Stack" missing="" />
      <page ns="0" title="Data Assets" missing="" />
      <page ns="0" title="Data notation and DOIs" missing="" />
      <page pageid="134" ns="0" title="Cedric David" />
      <page pageid="1271" ns="0" title="Create format and guidelines" />
      <page pageid="1276" ns="0" title="Develop GPF Checklist" />
      <page pageid="1240" ns="0" title="Develop proposal for special issue" />
      <page pageid="23" ns="0" title="Discuss what we will consider a GPF" />
      <page pageid="290" ns="0" title="Document GPF activities" />
      <page pageid="1170" ns="0" title="Document GPF activities by Allen Pope" />
    </pages>
  </query>
</api>