You are looking at the HTML representation of the XML format.
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>
    <general mainpage="Portada" base="http://ca.wiki.guifi.net/wiki/Portada" sitename="Guifi.net - Wiki Català" logo="/skins/guifi/images/wiki.png" generator="MediaWiki 1.22.0" phpversion="5.4.45-0+deb7u2" phpsapi="apache2handler" dbtype="mysql" dbversion="5.5.47-0+deb7u1" imagewhitelistenabled="" langconversion="" titleconversion="" linkprefix="" linktrail="/^((?:[a-zàèéíòóúç·ïü]|&#039;(?!&#039;))+)(.*)$/sDu" case="first-letter" rights="GNU Free Documentation License 1.3 &amp; Creative Commons Attribution/Share-Alike License" lang="ca" fallback8bitEncoding="windows-1252" writeapi="" timezone="Europe/Berlin" timeoffset="120" articlepath="/wiki/$1" scriptpath="/w" script="/w/index.php" variantarticlepath="" server="http://ca.wiki.guifi.net" wikiid="wikianfitrion-ca_" time="2024-04-29T01:08:51Z" maxuploadsize="104857600">
      <fallback>
        <lang code="en" />
      </fallback>
    </general>
    <namespaces>
      <ns id="-2" case="first-letter" canonical="Media" xml:space="preserve">Media</ns>
      <ns id="-1" case="first-letter" canonical="Special" xml:space="preserve">Especial</ns>
      <ns id="0" case="first-letter" subpages="" content="" xml:space="preserve" />
      <ns id="1" case="first-letter" subpages="" canonical="Talk" xml:space="preserve">Discussió</ns>
      <ns id="2" case="first-letter" subpages="" canonical="User" xml:space="preserve">Usuari</ns>
      <ns id="3" case="first-letter" subpages="" canonical="User talk" xml:space="preserve">Usuari Discussió</ns>
      <ns id="4" case="first-letter" subpages="" canonical="Project" xml:space="preserve">Guifi.net - Wiki Català</ns>
      <ns id="5" case="first-letter" subpages="" canonical="Project talk" xml:space="preserve">Guifi.net - Wiki Català Discussió</ns>
      <ns id="6" case="first-letter" canonical="File" xml:space="preserve">Fitxer</ns>
      <ns id="7" case="first-letter" subpages="" canonical="File talk" xml:space="preserve">Fitxer Discussió</ns>
      <ns id="8" case="first-letter" subpages="" canonical="MediaWiki" xml:space="preserve">MediaWiki</ns>
      <ns id="9" case="first-letter" subpages="" canonical="MediaWiki talk" xml:space="preserve">MediaWiki Discussió</ns>
      <ns id="10" case="first-letter" canonical="Template" xml:space="preserve">Plantilla</ns>
      <ns id="11" case="first-letter" subpages="" canonical="Template talk" xml:space="preserve">Plantilla Discussió</ns>
      <ns id="12" case="first-letter" subpages="" canonical="Help" xml:space="preserve">Ajuda</ns>
      <ns id="13" case="first-letter" subpages="" canonical="Help talk" xml:space="preserve">Ajuda Discussió</ns>
      <ns id="14" case="first-letter" canonical="Category" xml:space="preserve">Categoria</ns>
      <ns id="15" case="first-letter" subpages="" canonical="Category talk" xml:space="preserve">Categoria Discussió</ns>
      <ns id="90" case="first-letter" canonical="Thread" xml:space="preserve">Thread</ns>
      <ns id="91" case="first-letter" canonical="Thread talk" xml:space="preserve">Thread talk</ns>
      <ns id="92" case="first-letter" canonical="Summary" xml:space="preserve">Summary</ns>
      <ns id="93" case="first-letter" canonical="Summary talk" xml:space="preserve">Summary talk</ns>
    </namespaces>
    <namespacealiases>
      <ns id="6" xml:space="preserve">Image</ns>
      <ns id="6" xml:space="preserve">Imatge</ns>
      <ns id="7" xml:space="preserve">Image talk</ns>
      <ns id="7" xml:space="preserve">Imatge Discussió</ns>
    </namespacealiases>
    <statistics pages="489" articles="160" views="2949944" edits="5468" images="53" users="129" activeusers="0" admins="5" jobs="2" />
  </query>
</api>