diff --git a/market_trade/constants.py b/market_trade/constants.py
new file mode 100644
index 0000000..780bb78
--- /dev/null
+++ b/market_trade/constants.py
@@ -0,0 +1,38 @@
+import pathlib
+import os
+import dotenv
+
+
+ROOT_PATH = pathlib.Path(__file__).parent.parent
+_CANDLESTICK_DATASETS_RELATIVE_PATH = pathlib.Path('data/candlesticks')
+_TEST_CANDLESTICK_RELATIVE_PATH = pathlib.Path('data/EURUSD_price_candlestick.csv')
+CANDLESTICK_DATASETS_PATH = ROOT_PATH / _CANDLESTICK_DATASETS_RELATIVE_PATH
+TEST_CANDLESTICKS_PATH = ROOT_PATH / _TEST_CANDLESTICK_RELATIVE_PATH
+
+ENV_PATH = ROOT_PATH / '.env'
+
+# loading secrets
+dotenv.load_dotenv(ENV_PATH)
+
+
+TINKOFF_TOKEN_STRING = os.environ['REAL_TINKOFF_TOKEN']
+SANDBOX_TOKEN_STRING = os.environ['SANDBOX_TINKOFF_TOKEN']
+
+
+BEARER_TOKEN_HEAD = "Bearer "
+TINKOFF_AUTHORIZATION_HEADER = "authorization"
+TINKOFF_API_ADDRESS = 'invest-public-api.tinkoff.ru:443'
+TINKOFF_BEARER_TOKEN = BEARER_TOKEN_HEAD + TINKOFF_TOKEN_STRING
+SANDBOX_BEARER_TOKEN = BEARER_TOKEN_HEAD + SANDBOX_TOKEN_STRING
+DEFAULT_INSTRUMENT_STATUS = "base"
+
+PART_NUMBER_FIELD = "part_number"
+DEFAULT_PART_NUMBER = 0
+
+# TODO: add autodetection
+MARKETDATA_CONNECTION_LIMIT_SUBSCRIPTIONS = 300
+
+DATA_PATH = ROOT_PATH / "data"
+TRADES_DATA_PATH = DATA_PATH / "trades_data"
+CURRENCIES_TRADES_PATH = TRADES_DATA_PATH / "currencies"
+SHARES_TRADES_PATH = TRADES_DATA_PATH / "shares"
diff --git a/market_trade/core/constants.py b/market_trade/core/constants.py
deleted file mode 100644
index b925ef2..0000000
--- a/market_trade/core/constants.py
+++ /dev/null
@@ -1,7 +0,0 @@
-import pathlib
-
-ROOT_PATH = pathlib.Path(__file__).parent.parent
-_CANDLESTICK_DATASETS_RELATIVE_PATH = pathlib.Path('data/candlesticks')
-_TEST_CANDLESTICK_RELATIVE_PATH = pathlib.Path('data/EURUSD_price_candlestick.csv')
-CANDLESTICK_DATASETS_PATH = ROOT_PATH / _CANDLESTICK_DATASETS_RELATIVE_PATH
-TEST_CANDLESTICKS_PATH = ROOT_PATH / _TEST_CANDLESTICK_RELATIVE_PATH