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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>
    <pages>
      <page pageid="1" ns="0" title="Main Page">
        <links>
          <pl ns="0" title="Base map" />
          <pl ns="0" title="Collection" />
          <pl ns="0" title="Getting Started with MediaWiki" />
          <pl ns="0" title="KML Files" />
          <pl ns="0" title="Lines" />
          <pl ns="0" title="Narrative" />
          <pl ns="0" title="Narrative Mode" />
          <pl ns="0" title="Pinpoints" />
          <pl ns="0" title="Polygons" />
          <pl ns="10" title="Template:Infobox website" />
        </links>
      </page>
    </pages>
  </query>
</api>