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HTML is good for debugging, but probably is not suitable for your application.
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<?xml version="1.0"?>
<api>
  <query>
    <wkconfgroups>
      <item id="1" name="General Settings" xml:space="preserve">General Settings</item>
      <item id="2" name="Paths" xml:space="preserve">Paths</item>
      <item id="3" name="Shared uploads" xml:space="preserve">Shared uploads</item>
      <item id="4" name="Email settings" xml:space="preserve">Email settings</item>
      <item id="5" name="Email notification (Enotif) settings" xml:space="preserve">Email notification (Enotif) settings</item>
      <item id="6" name="Database settings" xml:space="preserve">Database settings</item>
      <item id="7" name="Memcached settings" xml:space="preserve">Memcached settings</item>
      <item id="8" name="Localization" xml:space="preserve">Localization</item>
      <item id="9" name="Debugging/logging/profiling" xml:space="preserve">Debugging/logging/profiling</item>
      <item id="10" name="Site customization" xml:space="preserve">Site customization</item>
      <item id="11" name="Skins" xml:space="preserve">Skins</item>
      <item id="12" name="Category" xml:space="preserve">Category</item>
      <item id="13" name="Cache" xml:space="preserve">Cache</item>
      <item id="14" name="Interwiki" xml:space="preserve">Interwiki</item>
      <item id="15" name="Access, Permissions" xml:space="preserve">Access, Permissions</item>
      <item id="16" name="Rate limiter" xml:space="preserve">Rate limiter</item>
      <item id="17" name="Proxies" xml:space="preserve">Proxies</item>
      <item id="18" name="Squid" xml:space="preserve">Squid</item>
      <item id="19" name="Cookies" xml:space="preserve">Cookies</item>
      <item id="20" name="Reduction" xml:space="preserve">Reduction</item>
      <item id="21" name="Uploads" xml:space="preserve">Uploads</item>
      <item id="22" name="Semantic MediaWiki" xml:space="preserve">Semantic MediaWiki</item>
      <item id="23" name="Parser" xml:space="preserve">Parser</item>
      <item id="24" name="Images" xml:space="preserve">Images</item>
      <item id="25" name="Recent changes" xml:space="preserve">Recent changes</item>
      <item id="26" name="Copyright" xml:space="preserve">Copyright</item>
      <item id="27" name="Extensions" xml:space="preserve">Extensions</item>
      <item id="28" name="HTCP multicast purging" xml:space="preserve">HTCP multicast purging</item>
      <item id="29" name="Miscellaneous settings" xml:space="preserve">Miscellaneous settings</item>
      <item id="30" name="Search" xml:space="preserve">Search</item>
      <item id="31" name="Namespaces" xml:space="preserve">Namespaces</item>
      <item id="32" name="Answers" xml:space="preserve">Answers</item>
      <item id="33" name="Ads" xml:space="preserve">Ads</item>
    </wkconfgroups>
  </query>
</api>