diff --git a/.gitignore b/.gitignore
index 876055c..3e4726f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 /.idea/
 /aster-connector-python.iml
+
+*.pyc
diff --git a/examples/rest_api/data_stream_listen_key/new_listen_key.py b/examples/rest_api/data_stream_listen_key/new_listen_key.py
index 363ba70..3a92486 100644
--- a/examples/rest_api/data_stream_listen_key/new_listen_key.py
+++ b/examples/rest_api/data_stream_listen_key/new_listen_key.py
@@ -2,10 +2,17 @@
 import logging
 from aster.rest_api import Client
 from aster.lib.utils import config_logging
+from dotenv import load_dotenv
+import os
+load_dotenv()
+
+from dotenv import load_dotenv
+import os
+load_dotenv()
 
 config_logging(logging, logging.DEBUG)
 
-key = ""
+key = os.getenv("ASTER_KEY")
 
 client = Client(key, base_url="https://fapi.asterdex.com")
 logging.info(client.new_listen_key())
diff --git a/examples/rest_api/trade/cancel_order.py b/examples/rest_api/trade/cancel_order.py
index d95c8e3..ccb5e43 100644
--- a/examples/rest_api/trade/cancel_order.py
+++ b/examples/rest_api/trade/cancel_order.py
@@ -3,15 +3,20 @@
 from aster.lib.utils import config_logging
 from aster.error import ClientError
 
+from dotenv import load_dotenv
+import os
+load_dotenv()
+
 config_logging(logging, logging.DEBUG)
 
-key = ""
-secret = ""
+key = os.getenv("ASTER_KEY")
+secret = os.getenv("ASTER_SECRET")
+client_order_id = "387feb054fd5e2249f00f0fc02fd9f6b"
 
 client = Client(key, secret, base_url="https://fapi.asterdex.com")
 
 try:
-    response = client.cancel_order(symbol = "BTCUSDT", orderId=123456, recvWindow=2000)
+    response = client.cancel_order(symbol = "BTCUSDT", origClientOrderId=client_order_id, recvWindow=2000)
     logging.info(response)
 except ClientError as error:
     logging.error(
diff --git a/examples/rest_api/trade/get_account.py b/examples/rest_api/trade/get_account.py
index 6067acd..483ddb3 100644
--- a/examples/rest_api/trade/get_account.py
+++ b/examples/rest_api/trade/get_account.py
@@ -3,10 +3,14 @@
 from aster.lib.utils import config_logging
 from aster.error import ClientError
 
+from dotenv import load_dotenv
+import os
+load_dotenv()
+
 config_logging(logging, logging.DEBUG)
 
-key = ""
-secret = ""
+key = os.getenv("ASTER_KEY")
+secret = os.getenv("ASTER_SECRET")
 
 client = Client(key, secret, base_url="https://fapi.asterdex.com")
 
diff --git a/examples/rest_api/trade/get_account_trades.py b/examples/rest_api/trade/get_account_trades.py
index 981811e..e041600 100644
--- a/examples/rest_api/trade/get_account_trades.py
+++ b/examples/rest_api/trade/get_account_trades.py
@@ -3,12 +3,16 @@
 from aster.lib.utils import config_logging
 from aster.error import ClientError
 
+from dotenv import load_dotenv
+import os
+load_dotenv()
+
 config_logging(logging, logging.DEBUG)
 
-key = ""
-secret = ""
+key = os.getenv("ASTER_KEY")
+secret = os.getenv("ASTER_SECRET")
 
-client = Client(key, secret,base_url="https://fapi.asterdex.com")
+client = Client(key,secret,base_url="https://fapi.asterdex.com")
 
 try:
     response = client.get_account_trades(symbol = "BTCUSDT", recvWindow=6000)
diff --git a/examples/rest_api/trade/get_balance.py b/examples/rest_api/trade/get_balance.py
index 3c2cf7d..40c1a3b 100644
--- a/examples/rest_api/trade/get_balance.py
+++ b/examples/rest_api/trade/get_balance.py
@@ -3,10 +3,14 @@
 from aster.lib.utils import config_logging
 from aster.error import ClientError
 
+from dotenv import load_dotenv
+import os
+load_dotenv()
+
 config_logging(logging, logging.DEBUG)
 
-key = ""
-secret = ""
+key = os.getenv("ASTER_KEY")
+secret = os.getenv("ASTER_SECRET")
 
 client = Client(key, secret,base_url="https://fapi.asterdex.com")
 
diff --git a/examples/rest_api/trade/get_position_margin_history.py b/examples/rest_api/trade/get_position_margin_history.py
index 0966708..a1cd2e4 100644
--- a/examples/rest_api/trade/get_position_margin_history.py
+++ b/examples/rest_api/trade/get_position_margin_history.py
@@ -3,10 +3,14 @@
 from aster.lib.utils import config_logging
 from aster.error import ClientError
 
+from dotenv import load_dotenv
+import os
+load_dotenv()
+
 config_logging(logging, logging.DEBUG)
 
-key = ""
-secret = ""
+key = os.getenv("ASTER_KEY")
+secret = os.getenv("ASTER_SECRET")
 
 client = Client(key, secret,base_url="https://fapi.asterdex.com")
 try:
diff --git a/examples/rest_api/trade/get_position_mode.py b/examples/rest_api/trade/get_position_mode.py
index 3bc9425..0cf4d65 100644
--- a/examples/rest_api/trade/get_position_mode.py
+++ b/examples/rest_api/trade/get_position_mode.py
@@ -3,10 +3,14 @@
 from aster.lib.utils import config_logging
 from aster.error import ClientError
 
+from dotenv import load_dotenv
+import os
+load_dotenv()
+
 config_logging(logging, logging.DEBUG)
 
-key = ""
-secret = ""
+key = os.getenv("ASTER_KEY")
+secret = os.getenv("ASTER_SECRET")
 
 client = Client(key, secret, base_url="https://fapi.asterdex.com")
 
diff --git a/examples/rest_api/trade/get_position_risk.py b/examples/rest_api/trade/get_position_risk.py
index 97c4403..dd47340 100644
--- a/examples/rest_api/trade/get_position_risk.py
+++ b/examples/rest_api/trade/get_position_risk.py
@@ -3,12 +3,16 @@
 from aster.lib.utils import config_logging
 from aster.error import ClientError
 
+from dotenv import load_dotenv
+import os
+load_dotenv()
+
 config_logging(logging, logging.DEBUG)
 
-key = ""
-secret = ""
+key = os.getenv("ASTER_KEY")
+secret = os.getenv("ASTER_SECRET")
 
-client = Client(key, secret,base_url="https://fapi.asterdex.com")
+client = Client(key,secret,base_url="https://fapi.asterdex.com")
 try:
     response = client.get_position_risk(recvWindow=6000)
     logging.info(response)
diff --git a/examples/rest_api/trade/new_order.py b/examples/rest_api/trade/new_order.py
index d0e4ba8..57826e5 100644
--- a/examples/rest_api/trade/new_order.py
+++ b/examples/rest_api/trade/new_order.py
@@ -3,15 +3,19 @@
 from aster.lib.utils import config_logging
 from aster.error import ClientError
 
+from dotenv import load_dotenv
+import os
+load_dotenv()
+
 config_logging(logging, logging.DEBUG)
 
-key = ""
-secret = ""
+key = os.getenv("ASTER_KEY")
+secret = os.getenv("ASTER_SECRET")
 
 client = Client(key, secret, base_url="https://fapi.asterdex.com")
 
 try:
-    response = client.new_order(symbol="BTCUSDT", side = "SELL", type= "LIMIT", quantity= 0.001, timeInForce="GTC", price= 59808.02)
+    response = client.new_order(symbol="BTCUSDT", side = "BUY", type= "LIMIT", quantity= 0.001, timeInForce="GTC", price= 59808.0)
     logging.info(response)
 except ClientError as error:
     logging.error(
diff --git a/examples/rest_api_async/data_stream_listen_key/new_listen_key.py b/examples/rest_api_async/data_stream_listen_key/new_listen_key.py
new file mode 100644
index 0000000..8f5ccf3
--- /dev/null
+++ b/examples/rest_api_async/data_stream_listen_key/new_listen_key.py
@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+import logging
+import asyncio
+from aster.rest_api import AsyncClient
+from aster.lib.utils import config_logging
+
+from dotenv import load_dotenv
+import os
+
+async def main():
+    load_dotenv()
+    config_logging(logging, logging.DEBUG)
+    key = os.getenv("ASTER_KEY")
+    client = AsyncClient(key, base_url="https://fapi.asterdex.com")
+    try:
+        logging.info(await client.new_listen_key())
+    finally:
+        await client.close()
+
+
+if __name__ == "__main__":
+    asyncio.run(main())
+
+
diff --git a/examples/websocket/user_data.py b/examples/websocket/user_data.py
index 5ba1743..44fd484 100644
--- a/examples/websocket/user_data.py
+++ b/examples/websocket/user_data.py
@@ -1,15 +1,20 @@
 import time
 import logging
 from aster.lib.utils import config_logging
-from aster.rest_api import Futures as Client
+from aster.rest_api import Client
 from aster.websocket.client.stream import WebsocketClient
 
+from dotenv import load_dotenv
+import os
+load_dotenv()
+
 config_logging(logging, logging.DEBUG)
 
 def message_handler(message):
     print(message)
 
-api_key = ""
+api_key = os.getenv("ASTER_KEY")
+
 client = Client(api_key)
 response = client.new_listen_key()
 
@@ -24,7 +29,7 @@ def message_handler(message):
     callback=message_handler,
 )
 
-time.sleep(30)
+time.sleep(60)
 
 logging.debug("closing ws connection")
 ws_client.stop()
diff --git a/requirements/requirements-test.txt b/requirements/requirements-test.txt
index 5bd3077..45a2a64 100644
--- a/requirements/requirements-test.txt
+++ b/requirements/requirements-test.txt
@@ -9,3 +9,4 @@ flake8
 tox
 tox-pyenv
 wheel
+python-dotenv