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-continue>
    <alllinks galcontinue="Cadastro_de_CEP_-_FF" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Cadasto de Agrupamento de Estoque 1" missing="" />
      <page pageid="1330" ns="0" title="Backup - CT-e" />
      <page pageid="1323" ns="0" title="Backup - FF" />
      <page pageid="792" ns="0" title="Baixa do Contas a Receber - FF" />
      <page pageid="1601" ns="0" title="Cadastro Histórico do Conta Corrente - FF" />
      <page pageid="1614" ns="0" title="Cadastro Tabela de Preço - FF" />
      <page pageid="274" ns="0" title="Cadastro da Base de Cálculo do Crédito - NF-e" />
      <page pageid="287" ns="0" title="Cadastro da Classificação do Item - NF-e" />
      <page pageid="210" ns="0" title="Cadastro de Agrupamento de Estoque - NF-e" />
      <page pageid="416" ns="0" title="Cadastro de Banco - NF-e" />
    </pages>
  </query>
</api>