diff --git a/commands/user.py b/commands/user.py
index cd23d31..e73e1db 100755
--- a/commands/user.py
+++ b/commands/user.py
@@ -1,8 +1,7 @@
 import click
-import json
 import requests
-
 from decouple import config
+
 from .helper import OTPCredentials, load_dump_pretty
 
 
@@ -17,7 +16,8 @@ def user():
 @click.option("--seed", envvar="OTP_SEED", required=True)
 def list_files(name, realm, seed):
     data = OTPCredentials(name, realm, seed).get_json()
-    r = requests.get(f"{config('UCLOUD_API_SERVER')}/user/files", json=data)
+    r = requests.get("{}/user/files".format(config('UCLOUD_API_SERVER')),
+                     json=data)
     print(load_dump_pretty(r.content))
 
 
@@ -27,5 +27,35 @@ def list_files(name, realm, seed):
 @click.option("--seed", envvar="OTP_SEED", required=True)
 def list_vms(name, realm, seed):
     data = OTPCredentials(name, realm, seed).get_json()
-    r = requests.get(f"{config('UCLOUD_API_SERVER')}/user/vms", json=data)
+    r = requests.get("{}/user/vms".format(config('UCLOUD_API_SERVER')),
+                     json=data)
+    print(load_dump_pretty(r.content))
+
+
+@user.command("register-payment")
+@click.option("--name", envvar="OTP_NAME", required=True)
+@click.option("--realm", envvar="OTP_REALM", required=True)
+@click.option("--seed", envvar="OTP_SEED", required=True)
+@click.option("--cc", required=True)
+@click.option("--number", required=True)
+@click.option("--cvc", required=True)
+@click.option("--expiry-month", required=True, help="MM", type=str)
+@click.option("--expiry-year", required=True, help="YY", type=str)
+@click.option("--card-holder-name", required=True,
+              help="The name as printed on the card", type=str)
+@click.option("--email", required=True, help="Email address", type=str)
+def register_payment(name, realm, seed, number, cvc, expiry_year, expiry_month,
+                     card_holder_name, email):
+    data = {
+        **OTPCredentials(name, realm, seed).get_json(),
+        "card_number": number,
+        "cvc": cvc,
+        "expiry_year": expiry_year,
+        "expiry_month": expiry_month,
+        "card_holder_name": card_holder_name,
+        "email": email
+    }
+    r = requests.get(
+        "{}/user/register_payment".format(config('UCLOUD_PAY_SERVER')),
+        json=data)
     print(load_dump_pretty(r.content))