A Kelpi API wrapper in Perl

#!/usr/bin/perl 

use warnings;
use strict;

use Data::Dumper;
use HTTP::Request::Common;
use Perl6::Slurp;
use Getopt::Long;
use LWP::UserAgent;

# * title - The title of this piece of code, could be its filename or a human readable title.
# * src - It is the source code of this script.
# * tags - Enumerate here the tags that you want to use for this program.
# * user - The user login should be included in the method call in order to be accepted.
# * password - The password is also necesary to accept the upload.

my $URL = 'http://kelpi.com/api/post';

my $rh_params = { };
GetOptions($rh_params,
    'file:s',
    'username:s',
    'password:s',
    'tags:s',
    'title:s',
);

unless ($rh_params->{file} && -e $rh_params->{file}){
    die 'You really must specify a source file using --file';
}

my $data = slurp $rh_params->{file};

my $ua = LWP::UserAgent->new;

my $rv = $ua->request(POST $URL, 
    [ 
      user     => $rh_params->{username}, 
      password => $rh_params->{password},
      tags     => $rh_params->{tags},
      title    => $rh_params->{title},
      src      => $data,
    ]
);

if ($rv->is_success) {
    print "Done !\n";
} else {
    print "Error " . $rv->status_line . "\n";
}

exit;