diff --git a/tempest/api/compute/security_groups/test_security_groups.py b/tempest/api/compute/security_groups/test_security_groups.py
index dbbeb70..ee840be 100644
--- a/tempest/api/compute/security_groups/test_security_groups.py
+++ b/tempest/api/compute/security_groups/test_security_groups.py
@@ -100,7 +100,7 @@
         server_id = server['id']
         waiters.wait_for_server_status(self.servers_client, server_id,
                                        'ACTIVE')
-        self.servers_client.add_security_group(server_id, sg['name'])
+        self.servers_client.add_security_group(server_id, name=sg['name'])
 
         # Check that we are not able to delete the security
         # group since it is in use by an active server
@@ -112,7 +112,7 @@
         self.servers_client.reboot_server(server_id, 'HARD')
         waiters.wait_for_server_status(self.servers_client, server_id,
                                        'ACTIVE')
-        self.servers_client.add_security_group(server_id, sg2['name'])
+        self.servers_client.add_security_group(server_id, name=sg2['name'])
 
         # Check that we are not able to delete the other security
         # group since it is in use by an active server
diff --git a/tempest/api/compute/servers/test_server_actions.py b/tempest/api/compute/servers/test_server_actions.py
index 0754d27..45cdeaf 100644
--- a/tempest/api/compute/servers/test_server_actions.py
+++ b/tempest/api/compute/servers/test_server_actions.py
@@ -81,7 +81,7 @@
     def test_change_server_password(self):
         # The server's password should be set to the provided password
         new_password = 'Newpass1234'
-        self.client.change_password(self.server_id, new_password)
+        self.client.change_password(self.server_id, adminPass=new_password)
         waiters.wait_for_server_status(self.client, self.server_id, 'ACTIVE')
 
         if CONF.validation.run_validation:
@@ -279,9 +279,9 @@
         # create the first and the second backup
         backup1 = data_utils.rand_name('backup-1')
         resp = self.client.create_backup(self.server_id,
-                                         'daily',
-                                         2,
-                                         backup1).response
+                                         backup_type='daily',
+                                         rotation=2,
+                                         name=backup1).response
         oldest_backup_exist = True
 
         # the oldest one should be deleted automatically in this test
@@ -303,9 +303,9 @@
         backup2 = data_utils.rand_name('backup-2')
         waiters.wait_for_server_status(self.client, self.server_id, 'ACTIVE')
         resp = self.client.create_backup(self.server_id,
-                                         'daily',
-                                         2,
-                                         backup2).response
+                                         backup_type='daily',
+                                         rotation=2,
+                                         name=backup2).response
         image2_id = data_utils.parse_image_id(resp['location'])
         self.addCleanup(self.os.image_client.delete_image, image2_id)
         self.os.image_client.wait_for_image_status(image2_id, 'active')
@@ -331,9 +331,9 @@
         backup3 = data_utils.rand_name('backup-3')
         waiters.wait_for_server_status(self.client, self.server_id, 'ACTIVE')
         resp = self.client.create_backup(self.server_id,
-                                         'daily',
-                                         2,
-                                         backup3).response
+                                         backup_type='daily',
+                                         rotation=2,
+                                         name=backup3).response
         image3_id = data_utils.parse_image_id(resp['location'])
         self.addCleanup(self.os.image_client.delete_image, image3_id)
         # the first back up should be deleted
diff --git a/tempest/api/compute/servers/test_server_rescue.py b/tempest/api/compute/servers/test_server_rescue.py
index 96ce45e..1552848 100644
--- a/tempest/api/compute/servers/test_server_rescue.py
+++ b/tempest/api/compute/servers/test_server_rescue.py
@@ -116,7 +116,8 @@
         self.addCleanup(self._unrescue, self.server_id)
 
         # Add Security group
-        self.servers_client.add_security_group(self.server_id, self.sg_name)
+        self.servers_client.add_security_group(self.server_id,
+                                               name=self.sg_name)
 
         # Delete Security group
         self.servers_client.remove_security_group(self.server_id,
diff --git a/tempest/api/compute/test_authorization.py b/tempest/api/compute/test_authorization.py
index 436ed2f..1fec139 100644
--- a/tempest/api/compute/test_authorization.py
+++ b/tempest/api/compute/test_authorization.py
@@ -150,7 +150,7 @@
     def test_change_password_for_alt_account_fails(self):
         # A change password request for another user's server should fail
         self.assertRaises(lib_exc.NotFound, self.alt_client.change_password,
-                          self.server['id'], 'newpass')
+                          self.server['id'], adminPass='newpass')
 
     @test.idempotent_id('14cb5ff5-f646-45ca-8f51-09081d6c0c24')
     def test_reboot_server_for_alt_account_fails(self):
diff --git a/tempest/cmd/javelin.py b/tempest/cmd/javelin.py
index c5e4a7e..c98073b 100755
--- a/tempest/cmd/javelin.py
+++ b/tempest/cmd/javelin.py
@@ -895,7 +895,7 @@
         client.servers.wait_for_server_status(server_id, 'ACTIVE')
         # create security group(s) after server spawning
         for secgroup in server['secgroups']:
-            client.servers.add_security_group(server_id, secgroup)
+            client.servers.add_security_group(server_id, name=secgroup)
         if CONF.compute.use_floatingip_for_ssh:
             floating_ip_pool = server.get('floating_ip_pool')
             floating_ip = client.floating_ips.create_floating_ip(
diff --git a/tempest/scenario/test_minimum_basic.py b/tempest/scenario/test_minimum_basic.py
index 25e3e6f..585b19d 100644
--- a/tempest/scenario/test_minimum_basic.py
+++ b/tempest/scenario/test_minimum_basic.py
@@ -95,7 +95,7 @@
     def create_and_add_security_group_to_server(self, server):
         secgroup = self._create_security_group()
         self.servers_client.add_security_group(server['id'],
-                                               secgroup['name'])
+                                               name=secgroup['name'])
         self.addCleanup(self.servers_client.remove_security_group,
                         server['id'], secgroup['name'])
 
diff --git a/tempest/services/compute/json/servers_client.py b/tempest/services/compute/json/servers_client.py
index aa9e6c6..80b3094 100644
--- a/tempest/services/compute/json/servers_client.py
+++ b/tempest/services/compute/json/servers_client.py
@@ -152,17 +152,21 @@
         self.validate_response(schema, resp, body)
         return service_client.ResponseBody(resp, body)
 
-    def create_backup(self, server_id, backup_type, rotation, name):
-        """Backup a server instance."""
-        return self.action(server_id, "createBackup",
-                           backup_type=backup_type,
-                           rotation=rotation,
-                           name=name)
+    def create_backup(self, server_id, **kwargs):
+        """Backup a server instance.
 
-    def change_password(self, server_id, adminPass):
-        """Changes the root password for the server."""
-        return self.action(server_id, 'changePassword',
-                           adminPass=adminPass)
+        Available params: see http://developer.openstack.org/
+                              api-ref-compute-v2.1.html#createBackup
+        """
+        return self.action(server_id, "createBackup", **kwargs)
+
+    def change_password(self, server_id, **kwargs):
+        """Change the root password for the server.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-compute-v2.1.html#changePassword
+        """
+        return self.action(server_id, 'changePassword', **kwargs)
 
     def show_password(self, server_id):
         resp, body = self.get("servers/%s/os-server-password" %
@@ -217,7 +221,11 @@
         return self.action(server_id, 'resize', **kwargs)
 
     def confirm_resize_server(self, server_id, **kwargs):
-        """Confirms the flavor change for a server."""
+        """Confirm the flavor change for a server.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-compute-v2.1.html#confirmResize
+        """
         return self.action(server_id, 'confirmResize',
                            schema.server_actions_confirm_resize,
                            **kwargs)
@@ -313,9 +321,16 @@
         self.validate_response(schema.list_volume_attachments, resp, body)
         return service_client.ResponseBody(resp, body)
 
-    def add_security_group(self, server_id, name):
-        """Adds a security group to the server."""
-        return self.action(server_id, 'addSecurityGroup', name=name)
+    def add_security_group(self, server_id, **kwargs):
+        """Add a security group to the server.
+
+        Available params: TODO
+        """
+        # TODO(oomichi): The api-site doesn't contain this API description.
+        # So the above should be changed to the api-site link after
+        # adding the description on the api-site.
+        # LP: https://bugs.launchpad.net/openstack-api-site/+bug/1524199
+        return self.action(server_id, 'addSecurityGroup', **kwargs)
 
     def remove_security_group(self, server_id, name):
         """Removes a security group from the server."""
@@ -437,7 +452,11 @@
                            type=console_type)
 
     def add_fixed_ip(self, server_id, **kwargs):
-        """Add a fixed IP to input server instance."""
+        """Add a fixed IP to server instance.
+
+        Available params: http://developer.openstack.org/
+                          api-ref-compute-v2.1.html#addFixedIp
+        """
         return self.action(server_id, 'addFixedIp', **kwargs)
 
     def remove_fixed_ip(self, server_id, **kwargs):