Just released Google::AJAX::Library for accessing the Google AJAX Libraries API in Perl.
Here is some example usage:
use Google::AJAX::Library;
my $library = Google::AJAX::Library->jquery;
$library->uri
# http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js
$library->html
# <script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js" type="text/javascript"></script>