diff --git a/alertaclient/commands/cmd_alerts.py b/alertaclient/commands/cmd_alerts.py
index dc5c990..7041b2b 100644
--- a/alertaclient/commands/cmd_alerts.py
+++ b/alertaclient/commands/cmd_alerts.py
@@ -4,7 +4,7 @@
 from tabulate import tabulate
 
 
-@click.command('alerts', short_help='List alert environments, services, groups and tags')
+@click.command('alerts', short_help='List environments, services, groups and tags')
 @click.option('--environments', '-E', is_flag=True, help='List alert environments.')
 @click.option('--services', '-S', is_flag=True, help='List alert services.')
 @click.option('--groups', '-g', is_flag=True, help='List alert groups.')
diff --git a/alertaclient/commands/cmd_blackout.py b/alertaclient/commands/cmd_blackout.py
index c51ed06..2810efc 100644
--- a/alertaclient/commands/cmd_blackout.py
+++ b/alertaclient/commands/cmd_blackout.py
@@ -15,7 +15,7 @@
 @click.option('--start', metavar='DATETIME', help='Start time in ISO8601 eg. 2018-02-01T12:00:00.000Z')
 @click.option('--duration', metavar='SECONDS', type=int, help='Blackout period in seconds')
 @click.option('--text', help='Reason for blackout')
-@click.option('--delete', '-D', help='Delete blackout using ID')
+@click.option('--delete', '-D', metavar='ID', help='Delete blackout using ID')
 @click.pass_obj
 def cli(obj, environment, service, resource, event, group, tags, origin, customer, start, duration, text, delete):
     """Suppress alerts for specified duration based on alert attributes."""
diff --git a/alertaclient/commands/cmd_scopes.py b/alertaclient/commands/cmd_scopes.py
new file mode 100644
index 0000000..280d3f3
--- /dev/null
+++ b/alertaclient/commands/cmd_scopes.py
@@ -0,0 +1,18 @@
+import json
+
+import click
+from tabulate import tabulate
+
+
+@click.command('scopes', short_help='List scopes')
+@click.pass_obj
+def cli(obj):
+    """List scopes."""
+    client = obj['client']
+
+    if obj['output'] == 'json':
+        r = client.http.get('/scopes')
+        click.echo(json.dumps(r['scopes'], sort_keys=True, indent=4, ensure_ascii=False))
+    else:
+        headers = {'scope': 'SCOPE'}
+        click.echo(tabulate([s.tabular() for s in client.get_scopes()], headers=headers, tablefmt=obj['output']))
diff --git a/alertaclient/commands/cmd_user.py b/alertaclient/commands/cmd_user.py
index 96a862d..34c391c 100644
--- a/alertaclient/commands/cmd_user.py
+++ b/alertaclient/commands/cmd_user.py
@@ -28,7 +28,7 @@ def parse_args(self, ctx, args):
 @click.option('--role', 'roles', multiple=True, help='List of roles')
 @click.option('--text', help='Description of user')
 @click.option('--email-verified/--email-not-verified', default=None, help='Email address verified flag')
-@click.option('--delete', '-D', metavar='UUID', help='Delete user using ID')
+@click.option('--delete', '-D', metavar='ID', help='Delete user using ID')
 @click.pass_obj
 def cli(obj, id, name, email, password, status, roles, text, email_verified, delete):
     """Create user, show or update user details, including password reset."""
diff --git a/alertaclient/models/enums.py b/alertaclient/models/enums.py
index bb7b596..46eb45c 100644
--- a/alertaclient/models/enums.py
+++ b/alertaclient/models/enums.py
@@ -1,13 +1,14 @@
 from enum import Enum
 
 
-class Scope(str, Enum):
+class Scope(str):
 
     read = 'read'
     write = 'write'
     admin = 'admin'
     read_alerts = 'read:alerts'
     write_alerts = 'write:alerts'
+    delete_alerts = 'delete:alerts'
     admin_alerts = 'admin:alerts'
     read_blackouts = 'read:blackouts'
     write_blackouts = 'write:blackouts'
@@ -58,6 +59,11 @@ def from_str(action: str, resource: str = None):
         else:
             return Scope(action)
 
+    def tabular(self):
+        return {
+            'scope': self
+        }
+
 
 ADMIN_SCOPES = [Scope.admin, Scope.read, Scope.write]