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="Página principal" base="http://wiki.znt.net.br/index.php?title=P%C3%A1gina_principal" sitename="Zenitech" generator="MediaWiki 1.21.2" phpversion="5.4.45" phpsapi="cgi-fcgi" dbtype="mysql" dbversion="5.6.51-log" langconversion="" titleconversion="" linkprefix="" linktrail="/^([áâãàéêẽçíòóôõq̃úüűũa-z]+)(.*)$/sDu" case="first-letter" rights="" lang="pt-br" fallback8bitEncoding="windows-1252" writeapi="" timezone="UTC" timeoffset="0" articlepath="/index.php?title=$1" scriptpath="" script="/index.php" variantarticlepath="" server="http://wiki.znt.net.br" wikiid="wikiznt_wiki-znt_" time="2024-12-20T18:44:04Z" maxuploadsize="104857600">
      <fallback>
        <lang code="pt" />
        <lang code="en" />
      </fallback>
    </general>
    <namespaces>
      <ns id="-2" case="first-letter" canonical="Media" xml:space="preserve">Mídia</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">Discussão</ns>
      <ns id="2" case="first-letter" subpages="" canonical="User" xml:space="preserve">Usuário</ns>
      <ns id="3" case="first-letter" subpages="" canonical="User talk" xml:space="preserve">Usuário Discussão</ns>
      <ns id="4" case="first-letter" subpages="" canonical="Project" xml:space="preserve">Zenitech</ns>
      <ns id="5" case="first-letter" subpages="" canonical="Project talk" xml:space="preserve">Zenitech Discussão</ns>
      <ns id="6" case="first-letter" canonical="File" xml:space="preserve">Arquivo</ns>
      <ns id="7" case="first-letter" subpages="" canonical="File talk" xml:space="preserve">Arquivo Discussão</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 Discussão</ns>
      <ns id="10" case="first-letter" canonical="Template" xml:space="preserve">Predefinição</ns>
      <ns id="11" case="first-letter" subpages="" canonical="Template talk" xml:space="preserve">Predefinição Discussão</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 Discussão</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 Discussão</ns>
    </namespaces>
    <namespacealiases>
      <ns id="6" xml:space="preserve">Image</ns>
      <ns id="7" xml:space="preserve">Image talk</ns>
      <ns id="6" xml:space="preserve">Imagem</ns>
      <ns id="7" xml:space="preserve">Imagem Discussão</ns>
      <ns id="6" xml:space="preserve">Ficheiro</ns>
      <ns id="7" xml:space="preserve">Ficheiro Discussão</ns>
      <ns id="2" xml:space="preserve">Usuária</ns>
      <ns id="3" xml:space="preserve">Usuária Discussão</ns>
    </namespacealiases>
    <statistics pages="4" articles="0" views="7854" edits="7" images="2" users="1" activeusers="0" admins="1" jobs="0" />
  </query>
</api>