well, I've tried here twice.
In the first attempt, it failed just like you've said.
In the second attempt, it worked.
<?xml version="1.0" encoding="UTF-8"?>
<results>
<status>OK</status>
<usage>By accessing AlchemyAPI or using information generated by AlchemyAPI, you are agreeing to be bound by the AlchemyAPI Terms of Use: http://www.alchemyapi.com/company/terms.html</usage>
<url>https://www.linkedin.com/in/laurentpauc</url>
<microformats>
<microformat>
<field>NameGivenName</field>
<data>Laurent</data>
</microformat>
<microformat>
<field>NameFamilyName</field>
<data>Pauc</data>
</microformat>
<microformat>
<field>AddrLocality</field>
<data>Saint-Denis, Île-de-France, France</data>
</microformat>
<microformat>
<field>FormattedName</field>
<data>Laurent Pauc</data>
</microformat>
<microformat>
<field>OrgName</field>
<data>ESPACE BUROCOM</data>
</microformat>
<microformat>
<field>Title</field>
<data>Responsable Marketing chez Espace Burocom • Concessionnaire Xerox</data>
</microformat>
</microformats>
</results>
So I think this may be some temporary issue.