diff --git a/lib/PostText/Command/argon2.pm b/lib/PostText/Command/argon2.pm
index bc2085e..fd6e872 100644
--- a/lib/PostText/Command/argon2.pm
+++ b/lib/PostText/Command/argon2.pm
@@ -6,6 +6,8 @@ has description => 'Hash a string with Argon2';
 has usage       => sub ($self) { $self->extract_usage };
 
 sub run($self, @args) {
+    die $self->usage unless $args[0];
+
     say $self->app->authenticator->hash_password($_) for @args
 }
 
diff --git a/lib/PostText/Command/create.pm b/lib/PostText/Command/create.pm
new file mode 100644
index 0000000..c3236cf
--- /dev/null
+++ b/lib/PostText/Command/create.pm
@@ -0,0 +1,31 @@
+package PostText::Command::create;
+
+use Mojo::Base 'Mojolicious::Command', -signatures;
+use Mojo::Util qw{getopt};
+
+has description => 'Create a moderator account';
+has usage       => sub ($self) { $self->extract_usage };
+
+sub run($self, @args) {
+    die $self->usage unless $args[0];
+
+    getopt \@args,
+        'n|name=s'     => \my $name,
+        'e|email=s'    => \my $email,
+        'p|password=s' => \my $password;
+
+    say 'Moderator created successfully.'
+        if $self->app->moderator->create($name, $email, $password);
+}
+
+1;
+
+=head1 SYNOPSIS
+
+  Usage: APPLICATION create OPTIONS
+
+  Options:
+    -n, --name                           Moderator's name
+    -e, --email                          Moderator's email
+    -p, --password                       Moderator's password
+=cut
diff --git a/lib/PostText/Command/promote.pm b/lib/PostText/Command/promote.pm
new file mode 100644
index 0000000..4c2d53a
--- /dev/null
+++ b/lib/PostText/Command/promote.pm
@@ -0,0 +1,22 @@
+package PostText::Command::promote;
+
+use Mojo::Base 'Mojolicious::Command', -signatures;
+
+has description => 'Promote a moderator account to admin';
+has usage       => sub ($self) { $self->extract_usage };
+
+sub run($self, @args) {
+    die $self->usage unless $args[0];
+
+    for my $email (@args) {
+        say "Promoted $email." if $self->app->moderator->promote($email)
+    }
+}
+
+1;
+
+=head1 SYNOPSIS
+
+  Usage: APPLICATION EMAIL(S)
+
+=cut