diff --git a/README.md b/README.md
index 12f1be6..61dd0e4 100644
--- a/README.md
+++ b/README.md
@@ -85,6 +85,32 @@ async def main():
 asyncio.run(main())
 ```
 
+### Request Configuration
+
+You can get the request configuration using `bpx.base.base_account` and `bpx.base.base_public` without doing a request.
+
+```python
+from bpx.base.base_account import BaseAccount
+from bpx.base.base_public import BasePublic
+from bpx.models.request_configuration import RequestConfiguration # unnecessary
+
+base_public = BasePublic()
+base_account = BaseAccount("<PUBLIC_KEY>", "<SECRET_KEY>", window=5000, debug=True)
+
+# let's get url and headers for this account request
+request_config: RequestConfiguration = base_account.get_balances()
+url = request_config.url
+headers = request_config.headers
+# let's get url for this public request
+request_url: str = base_public.get_ticker_url(symbol="SOL_USDC")
+```
+
+### Can be useful 
+
+`bpx.models` - models that are in use by request.
+
+`bpx.constants` - constants that may help if you don't know which variables are existing.
+
 ## Useful sources
 
 [Discord channel to get help](https://discord.gg/backpack)
diff --git a/bpx/constants/enums.py b/bpx/constants/enums.py
index f460232..dcbeb8f 100644
--- a/bpx/constants/enums.py
+++ b/bpx/constants/enums.py
@@ -2,17 +2,6 @@
 from typing import Optional
 
 
-class Blockchain(Enum):
-    ETHEREUM = "Ethereum"
-    SOLANA = "Solana"
-    Polygon = "Polygon"
-    BITCOIN = "Bitcoin"
-
-    @classmethod
-    def has_value(cls, value):
-        return value in cls._value2member_map_
-
-
 class TimeInterval(Enum):
     ONE_MINUTE = "1m"
     THREE_MINUTES = "3m"
@@ -34,6 +23,9 @@ class TimeInterval(Enum):
     def has_value(cls, value):
         return value in cls._value2member_map_
 
+    def __str__(self):
+        return self.value
+
 
 class TimeInForce(Enum):
     GTC = "GTC"
@@ -44,6 +36,9 @@ class TimeInForce(Enum):
     def has_value(cls, value):
         return value in cls._value2member_map_
 
+    def __str__(self):
+        return self.value
+
 
 class SelfTradePrevention(Enum):
     REJECT_TAKER = "RejectTaker"
@@ -54,3 +49,6 @@ class SelfTradePrevention(Enum):
     @classmethod
     def has_value(cls, value):
         return value in cls._value2member_map_
+
+    def __str__(self):
+        return self.value
diff --git a/examples/public_example.py b/examples/public_example.py
index 51664b7..d4b3d35 100644
--- a/examples/public_example.py
+++ b/examples/public_example.py
@@ -1,4 +1,5 @@
 from bpx.public import Public
+from datetime import datetime, timedelta
 
 
 def public_example():
@@ -16,8 +17,12 @@ def public_example():
     depth = public.get_depth("SOL_USDC")
     print("Depth for SOL_USDC:", depth)
 
-    klines_timestamp = 1715692417
-    klines = public.get_klines("SOL_USDC", "1m", klines_timestamp)
+    now = datetime.now()
+    time_1_minute_ago = now - timedelta(minutes=1)
+    timestamp_1_minute_ago = int(time_1_minute_ago.timestamp())
+    time_11_minutes_ago = now - timedelta(minutes=11)
+    timestamp_11_minutes_ago = int(time_11_minutes_ago.timestamp())
+    klines = public.get_klines("SOL_USDC", "1m", timestamp_11_minutes_ago, timestamp_1_minute_ago)
     print("K-lines for SOL_USDC:", klines)
 
     status = public.get_status()
diff --git a/tests/test_base_account.py b/tests/test_base_account.py
index 5d1fa6c..c689eec 100644
--- a/tests/test_base_account.py
+++ b/tests/test_base_account.py
@@ -82,3 +82,4 @@ def test_withdrawal(account):
     assert request_config.url == "https://api.backpack.exchange/wapi/v1/capital/withdrawals"
     assert request_config.data["address"] == "1BitcoinAddress"
     assert request_config.data["blockchain"] == "Bitcoin"
+
diff --git a/tests/tests_api/test_public.py b/tests/tests_api/test_public.py
index 9adfb49..494d4b0 100644
--- a/tests/tests_api/test_public.py
+++ b/tests/tests_api/test_public.py
@@ -1,5 +1,6 @@
 import pytest
 from bpx.public import Public
+from datetime import datetime, timedelta
 
 
 @pytest.fixture
@@ -25,10 +26,13 @@ def test_get_depth_returns_dict(public_client: Public):
 
 
 def test_get_klines_returns_list(public_client: Public):
-    start_time = 1715692417
-    end_time = 1715778817
+    now = datetime.now()
+    time_1_minute_ago = now - timedelta(minutes=1)
+    timestamp_1_minute_ago = int(time_1_minute_ago.timestamp())
+    time_11_minutes_ago = now - timedelta(minutes=11)
+    timestamp_11_minutes_ago = int(time_11_minutes_ago.timestamp())
     assert isinstance(
-        public_client.get_klines("BTC_USDC", "1d", start_time, end_time), list
+        public_client.get_klines("BTC_USDC", "5m", timestamp_11_minutes_ago, timestamp_1_minute_ago), list
     )
 
 
@@ -56,4 +60,4 @@ def test_get_recent_trades_returns_list(public_client: Public):
 
 
 def test_get_history_trades_returns_list(public_client: Public):
-    assert isinstance(public_client.get_history_trades("WEN_USDC"), list)
+    assert isinstance(public_client.get_history_trades("WEN_USDC"), list)
\ No newline at end of file