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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="Affiliates massmail.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="185" ns="6" title="File:(PostBack) Data Post back to MPA3.pdf" />
      <page pageid="173" ns="6" title="File:Add customer.png" />
      <page pageid="120" ns="6" title="File:Admin stats format.png" />
      <page pageid="106" ns="6" title="File:Aff countries.png" />
      <page pageid="122" ns="6" title="File:Aff stats format.png" />
      <page pageid="82" ns="6" title="File:Affiliates aff-approve.jpg" />
      <page pageid="90" ns="6" title="File:Affiliates aff-settings.jpg" />
      <page pageid="88" ns="6" title="File:Affiliates blacklist.jpg" />
      <page pageid="130" ns="6" title="File:Affiliates fraud-affiliates.jpg" />
      <page pageid="134" ns="6" title="File:Affiliates manager.jpg" />
    </pages>
  </query>
</api>