diff --git a/README.md b/README.md
index 46ab539..17171ae 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,32 @@ Create remote host configuration
 mdrs config create neurodata https://neurodata.riken.jp/api
 ```
 
+### config update
+
+Update the URL of a registered remote host.
+
+```shell
+mdrs config update neurodata https://neurodata.riken.jp/api
+```
+
+### config list
+
+List registered remote hosts.
+
+```shell
+mdrs config list
+mdrs config ls
+```
+
+### config delete
+
+Remove a registered remote host.
+
+```shell
+mdrs config delete neurodata
+mdrs config rm neurodata
+```
+
 ### login
 
 Login to remote host
diff --git a/mdrsclient/commands/config.py b/mdrsclient/commands/config.py
index d5fd319..8ef6ffe 100644
--- a/mdrsclient/commands/config.py
+++ b/mdrsclient/commands/config.py
@@ -26,10 +26,9 @@ class ConfigCommand(BaseCommand):
         update_parser.set_defaults(func=cls.func_update)
         # config list
         list_parser = config_parsers.add_parser("list", help="list all the remote hosts", aliases=["ls"])
-        list_parser.add_argument("-l", "--long", help="show the api url", action="store_true")
         list_parser.set_defaults(func=cls.func_list)
         # config delete
-        delete_parser = config_parsers.add_parser("delete", help="delete an existing remote host", aliases=["remove"])
+        delete_parser = config_parsers.add_parser("delete", help="delete an existing remote host", aliases=["remove", "rm"])
         delete_parser.add_argument("remote", help="label of remote host")
         delete_parser.set_defaults(func=cls.func_delete)
 
@@ -47,8 +46,7 @@ class ConfigCommand(BaseCommand):
 
     @classmethod
     def func_list(cls, args: Namespace) -> None:
-        is_long = bool(args.long)
-        cls.list(is_long)
+        cls.list()
 
     @classmethod
     def func_delete(cls, args: Namespace) -> None:
@@ -74,13 +72,10 @@ class ConfigCommand(BaseCommand):
             config.url = url
 
     @classmethod
-    def list(cls, is_long: bool) -> None:
+    def list(cls) -> None:
         config = ConfigFile("")
         for remote, url in config.list():
-            line = f"{remote}:"
-            if is_long:
-                line += f"\t{url}"
-            print(line)
+            print(f"{remote}:\t{url}")
 
     @classmethod
     def delete(cls, remote: str) -> None: