# My/Role.pm
package My::Role;
use Moo::Role;
use MooX::Role::Parameterized;

role {
    my ($params, $mop) = @_;
    $mop->has($params->{name} => is => $params->{is});
}

##</code><code>##

# My/Obj.pm
package My::Obj;
use Moo;
use My::Role;

'My::Role'->apply({
    name => 'size',
    is   => 'ro',
});

##</code><code>##

package My::Obj;
use Moo;
use MooX::Role::Parameterized::With 'My::Role' => {
    name => 'size',
    is   => 'ro',
};

##</code><code>##

package My::Obj;
use Moo;
use MooX::Role::Parameterized::With 0.501;

with 'My::Role' => {
    name => 'size',
    is   => 'ro',
};

##</code><code>##

package My::Role;
use Moo::Role;
use MooX::Role::Parameterized 0.501;

parameter name => (is => 'ro');
parameter is   => (is => 'ro');

role {
    my ($params, $mop) = @_;
    $mop->has($params->name => is => $params->is);
}