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="Pàgina principal" base="https://rosespedia.cat/index.php?title=P%C3%A0gina_principal" sitename="Rosespedia" logo="https://rosespedia.cat/skins/common/images/wiki.png" generator="MediaWiki 1.23.11" phpversion="5.6.40-65+0~20230409.73+debian11~1.gbp473a1b" phpsapi="fpm-fcgi" dbtype="mysql" dbversion="5.5.5-10.5.19-MariaDB-0+deb11u2" imagewhitelistenabled="" langconversion="" titleconversion="" linkprefixcharset="" linkprefix="" linktrail="/^((?:[a-zàèéíòóúç·ïü]|&#039;(?!&#039;))+)(.*)$/sDu" case="first-letter" lang="ca" fallback8bitEncoding="windows-1252" writeapi="" timezone="Europe/Madrid" timeoffset="120" articlepath="/index.php?title=$1" scriptpath="" script="/index.php" server="https://rosespedia.cat" wikiid="rosespediadb" time="2024-04-27T10:15:14Z" maxuploadsize="104857600" minuploadchunksize="1024" favicon="https://rosespedia.cat/favicon.ico">
      <fallback>
        <lang code="en" />
      </fallback>
      <thumblimits>
        <limit>120</limit>
        <limit>150</limit>
        <limit>180</limit>
        <limit>200</limit>
        <limit>250</limit>
        <limit>300</limit>
      </thumblimits>
      <imagelimits>
        <limit width="320" height="240" />
        <limit width="640" height="480" />
        <limit width="800" height="600" />
        <limit width="1024" height="768" />
        <limit width="1280" height="1024" />
      </imagelimits>
    </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" 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">Rosespedia</ns>
      <ns id="5" case="first-letter" subpages="" canonical="Project talk" xml:space="preserve">Rosespedia 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="420" case="first-letter" canonical="Layer" xml:space="preserve">Layer</ns>
      <ns id="421" case="first-letter" canonical="Layer talk" xml:space="preserve">Layer 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="1759" articles="600" views="11822399" edits="16419" images="908" users="389" activeusers="0" admins="1" jobs="2" />
  </query>
</api>