Good work; it's nice to see people contributing new modules (and I could have used a nice prewritten module for this purpose a time or two in the past.) I have a few questions worth considering though.

Why the indirect object notation?

my $parse   = new MetaParser;

Why create and dereference and rereference a hash, especially when your constructor takes no arguments?

my $obj  = {@_};

    $obj = bless {%$obj},$pkg || die 'unable to bless object!';
[download]

Why would bless fail?

$obj = bless {%$obj},$pkg || die 'unable to bless object!';

What benefit is there to making this an object?