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HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allimages gaifrom="Hypercities importer.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="327" ns="6" title="File:415381main A-SMC IRAC-MIPS crop-med.jpg" />
      <page pageid="332" ns="6" title="File:Adding.JPG" />
      <page pageid="340" ns="6" title="File:Banner.jpg" />
      <page pageid="377" ns="6" title="File:Chooseicon.jpg" />
      <page pageid="334" ns="6" title="File:HC Logo black txt.png" />
      <page pageid="336" ns="6" title="File:HC add KML.jpg" />
      <page pageid="328" ns="6" title="File:HC upload Image.jpg" />
      <page pageid="335" ns="6" title="File:HC upload Image edited.jpg" />
      <page pageid="338" ns="6" title="File:Hide marker.JPG" />
      <page pageid="324" ns="6" title="File:Hypercities Interface.jpg" />
    </pages>
  </query>
</api>