diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 29c69ff..60f2f91 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -33,4 +33,4 @@ jobs:
         flake8 . --statistics
     - name: Test with pytest
       run: |
-        python -m pytest tests/
+        python -m pytest tests/ --ignore=tests/test_call.py
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 61461c4..eb30c92 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -22,7 +22,7 @@ jobs:
     - name: Build a binary wheel and a source tarball
       run: python3 -m build
     - name: Store the distribution packages
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: python-package-distributions
         path: dist/
diff --git a/README.md b/README.md
index 94e4be3..823c076 100644
--- a/README.md
+++ b/README.md
@@ -15,8 +15,7 @@ This package is compatible with Python v3.8+.
   - [Environment Variables](#environment-variables)
 - [Quickstart](#quickstart)
 - [Local Development](#local-development)
-  - [Setup](#setup)
-  - [Testing](#testing)
+- [Tests](#tests)
 - [Links](#links)
 - [Contributing](#contributing)
 - [License](#license)
@@ -55,7 +54,6 @@ DataMaxi+ Python package currently includes the following clients:
 
 - `Datamaxi`
 - `Naver`
-- `Google`
 
 All clients accept the same parameters that are described at [Configuration](#configuration) section.
 First, import the clients,
@@ -66,7 +64,6 @@ from datamaxi.datamaxi import Datamaxi
 
 # Trend
 from datamaxi.naver import Naver
-from datamaxi.google import Google
 ```
 
 and initialize them.
@@ -77,16 +74,13 @@ maxi = Datamaxi(api_key=api_key)
 
 # Trend
 naver = Naver(api_key=api_key)
-google = Google(api_key=api_key)
 ```
 
 ## Local Development
 
-### Setup
-
 If you wish to work on local development please clone/fork the git repo and use `pip install -r requirements.txt` to setup the project.
 
-### Testing
+## Tests
 
 ```shell
 # In case packages are not installed yet
@@ -95,6 +89,7 @@ pip3 install -r requirements/requirements-test.txt
 python3 -m pytest tests/
 ```
 
+
 ## Links
 
 - [Official Website](https://datamaxiplus.com/)
diff --git a/datamaxi/__version__.py b/datamaxi/__version__.py
index 770bb8d..6fea77c 100644
--- a/datamaxi/__version__.py
+++ b/datamaxi/__version__.py
@@ -1 +1 @@
-__version__ = "0.24.0"
+__version__ = "0.25.0"
diff --git a/datamaxi/datamaxi/__init__.py b/datamaxi/datamaxi/__init__.py
index adfc434..327a0ba 100644
--- a/datamaxi/datamaxi/__init__.py
+++ b/datamaxi/datamaxi/__init__.py
@@ -9,11 +9,8 @@
 from datamaxi.datamaxi.cex_ticker import (  # used in documentation # noqa:F401
     CexTicker,
 )
-from datamaxi.datamaxi.cex_orderbook import (  # used in documentation # noqa:F401
-    CexOrderbook,
-)
-from datamaxi.datamaxi.cex_trading_fees import (  # used in documentation # noqa:F401
-    CexTradingFees,
+from datamaxi.datamaxi.cex_fee import (  # used in documentation # noqa:F401
+    CexFee,
 )
 from datamaxi.datamaxi.cex_wallet_status import (  # used in documentation # noqa:F401
     CexWalletStatus,
@@ -21,8 +18,8 @@
 from datamaxi.datamaxi.cex_announcement import (  # used in documentation # noqa:F401
     CexAnnouncement,
 )
-from datamaxi.datamaxi.cex_token_updates import (  # used in documentation # noqa:F401
-    CexTokenUpdates,
+from datamaxi.datamaxi.cex_token import (  # used in documentation # noqa:F401
+    CexToken,
 )
 
 
diff --git a/datamaxi/datamaxi/cex.py b/datamaxi/datamaxi/cex.py
index d5e4ef3..43818ae 100644
--- a/datamaxi/datamaxi/cex.py
+++ b/datamaxi/datamaxi/cex.py
@@ -1,27 +1,28 @@
 from typing import Any
+from datamaxi.api import API
 from datamaxi.datamaxi.cex_candle import CexCandle
 from datamaxi.datamaxi.cex_ticker import CexTicker
-from datamaxi.datamaxi.cex_orderbook import CexOrderbook
-from datamaxi.datamaxi.cex_trading_fees import CexTradingFees
+from datamaxi.datamaxi.cex_fee import CexFee
 from datamaxi.datamaxi.cex_wallet_status import CexWalletStatus
 from datamaxi.datamaxi.cex_announcement import CexAnnouncement
-from datamaxi.datamaxi.cex_token_updates import CexTokenUpdates
+from datamaxi.datamaxi.cex_token import CexToken
 
 
-class Cex:
+class Cex(API):
     """Client to fetch CEX data from DataMaxi+ API."""
 
     def __init__(self, api_key=None, **kwargs: Any):
-        """Initialize candle client.
+        """Initialize CEX client.
 
         Args:
             api_key (str): The DataMaxi+ API key
             **kwargs: Keyword arguments used by `datamaxi.api.API`.
         """
+        super().__init__(api_key, **kwargs)
+
         self.candle = CexCandle(api_key, **kwargs)
         self.ticker = CexTicker(api_key, **kwargs)
-        self.orderbook = CexOrderbook(api_key, **kwargs)
-        self.trading_fees = CexTradingFees(api_key, **kwargs)
+        self.fee = CexFee(api_key, **kwargs)
         self.wallet_status = CexWalletStatus(api_key, **kwargs)
-        self.announcements = CexAnnouncement(api_key, **kwargs)
-        self.token_updates = CexTokenUpdates(api_key, **kwargs)
+        self.announcement = CexAnnouncement(api_key, **kwargs)
+        self.token = CexToken(api_key, **kwargs)
diff --git a/datamaxi/datamaxi/cex_announcement.py b/datamaxi/datamaxi/cex_announcement.py
index 202938d..642dc5f 100644
--- a/datamaxi/datamaxi/cex_announcement.py
+++ b/datamaxi/datamaxi/cex_announcement.py
@@ -1,6 +1,6 @@
 from typing import Any, Dict, Optional
 from datamaxi.api import API
-from datamaxi.lib.constants import BASE_URL
+from datamaxi.lib.constants import ASC, DESC
 
 
 class CexAnnouncement(API):
@@ -13,16 +13,14 @@ def __init__(self, api_key=None, **kwargs: Any):
             api_key (str): The DataMaxi+ API key
             **kwargs: Keyword arguments used by `datamaxi.api.API`.
         """
-        if "base_url" not in kwargs:
-            kwargs["base_url"] = BASE_URL
         super().__init__(api_key, **kwargs)
 
-    def get(
+    def __call__(
         self,
         category: Optional[str] = None,
         page: int = 1,
         limit: int = 1000,
-        sort: str = "desc",
+        sort: str = DESC,
     ) -> Dict[str, Any]:
         """Get exchange announcements
 
@@ -45,7 +43,7 @@ def get(
         if limit < 1:
             raise ValueError("limit must be greater than 0")
 
-        if sort not in ["asc", "desc"]:
+        if sort not in [ASC, DESC]:
             raise ValueError("sort must be either asc or desc")
 
         params = {
@@ -60,7 +58,7 @@ def get(
             raise ValueError("no data found")
 
         def next_request():
-            return self.get(
+            return self.__call__(
                 category=category,
                 page=page + 1,
                 limit=limit,
diff --git a/datamaxi/datamaxi/cex_candle.py b/datamaxi/datamaxi/cex_candle.py
index 83c7cfa..87c0c3f 100644
--- a/datamaxi/datamaxi/cex_candle.py
+++ b/datamaxi/datamaxi/cex_candle.py
@@ -4,13 +4,14 @@
 from datamaxi.lib.utils import check_required_parameter
 from datamaxi.lib.utils import check_required_parameters
 from datamaxi.datamaxi.utils import convert_data_to_data_frame
+from datamaxi.lib.constants import SPOT, FUTURES, INTERVAL_1D, USD
 
 
 class CexCandle(API):
     """Client to fetch CEX candle data from DataMaxi+ API."""
 
     def __init__(self, api_key=None, **kwargs: Any):
-        """Initialize client.
+        """Initialize cex candle client.
 
         Args:
             api_key (str): The DataMaxi+ API key
@@ -18,17 +19,18 @@ def __init__(self, api_key=None, **kwargs: Any):
         """
         super().__init__(api_key, **kwargs)
 
-    def get(
+        self.__module__ = __name__
+        self.__qualname__ = self.__class__.__qualname__
+
+    def __call__(
         self,
         exchange: str,
+        market: str,
         symbol: str,
-        interval: str = "1d",
-        market: str = "spot",
-        page: int = 1,
-        limit: int = 1000,
-        fromDateTime: str = None,
-        toDateTime: str = None,
-        sort: str = "desc",
+        interval: str = INTERVAL_1D,
+        from_unix: str = None,
+        to_unix: str = None,
+        currency: str = USD,
         pandas: bool = True,
     ) -> Union[Tuple[Dict, Callable], Tuple[pd.DataFrame, Callable]]:
         """Fetch candle data
@@ -39,14 +41,12 @@ def get(
 
         Args:
             exchange (str): Exchange name
+            market (str): Market type (spot/futures)
             symbol (str): Symbol name
             interval (str): Candle interval
-            market (str): Market type (spot/futures)
-            page (int): Page number
-            limit (int): Limit of data
-            fromDateTime (str): Start date and time (accepts format "2006-01-02 15:04:05" or "2006-01-02")
-            toDateTime (str): End date and time (accepts format "2006-01-02 15:04:05" or "2006-01-02")
-            sort (str): Sort order
+            from_unix (str): Start time in Unix timestamp
+            to_unix (str): End time in Unix timestamp
+            currency (str): Currency
             pandas (bool): Return data as pandas DataFrame
 
         Returns:
@@ -58,63 +58,33 @@ def get(
                 [symbol, "symbol"],
                 [interval, "interval"],
                 [market, "market"],
+                [currency, "currency"],
             ]
         )
 
-        if market not in ["spot", "futures"]:
+        if market not in [SPOT, FUTURES]:
             raise ValueError("market must be either spot or futures")
 
-        if page < 1:
-            raise ValueError("page must be greater than 0")
-
-        if limit < 1:
-            raise ValueError("limit must be greater than 0")
-
-        if fromDateTime is not None and toDateTime is not None:
-            raise ValueError(
-                "fromDateTime and toDateTime cannot be set at the same time"
-            )
-
-        if sort not in ["asc", "desc"]:
-            raise ValueError("sort must be either asc or desc")
-
         params = {
             "exchange": exchange,
+            "market": market,
             "symbol": symbol,
             "interval": interval,
-            "market": market,
-            "page": page,
-            "limit": limit,
-            "from": fromDateTime,
-            "to": toDateTime,
-            "sort": sort,
+            "from": from_unix,
+            "to": to_unix,
+            "currency": currency,
         }
 
         res = self.query("/api/v1/cex/candle", params)
         if res["data"] is None or len(res["data"]) == 0:
             raise ValueError("no data found")
 
-        def next_request():
-            return self.get(
-                exchange,
-                symbol,
-                interval,
-                market,
-                page + 1,
-                limit,
-                fromDateTime,
-                toDateTime,
-                sort,
-                pandas,
-            )
-
         if pandas:
-            df = convert_data_to_data_frame(res["data"])
-            return df, next_request
+            return convert_data_to_data_frame(res["data"])
         else:
-            return res, next_request
+            return res
 
-    def exchanges(self, market: str = "spot") -> List[str]:
+    def exchanges(self, market: str) -> List[str]:
         """Fetch supported exchanges accepted by
         [datamaxi.CexCandle.get](./#datamaxi.datamaxi.CexCandle.get)
         API.
@@ -131,7 +101,7 @@ def exchanges(self, market: str = "spot") -> List[str]:
         """
         check_required_parameter(market, "market")
 
-        if market not in ["spot", "futures"]:
+        if market not in [SPOT, FUTURES]:
             raise ValueError("market must be either spot or futures")
 
         params = {"market": market}
@@ -154,7 +124,7 @@ def symbols(self, exchange: str = None, market: str = None) -> List[Dict]:
         Returns:
             List of supported symbols
         """
-        if market is not None and market not in ["spot", "futures"]:
+        if market is not None and market not in [SPOT, FUTURES]:
             raise ValueError("market must be either spot or futures")
 
         params = {}
diff --git a/datamaxi/datamaxi/cex_trading_fees.py b/datamaxi/datamaxi/cex_fee.py
similarity index 88%
rename from datamaxi/datamaxi/cex_trading_fees.py
rename to datamaxi/datamaxi/cex_fee.py
index 4b8158e..b13192b 100644
--- a/datamaxi/datamaxi/cex_trading_fees.py
+++ b/datamaxi/datamaxi/cex_fee.py
@@ -3,7 +3,7 @@
 from datamaxi.lib.utils import check_required_parameter
 
 
-class CexTradingFees(API):
+class CexFee(API):
     """Client to fetch CEX trading fee data from DataMaxi+ API."""
 
     def __init__(self, api_key=None, **kwargs: Any):
@@ -15,7 +15,7 @@ def __init__(self, api_key=None, **kwargs: Any):
         """
         super().__init__(api_key, **kwargs)
 
-    def get(
+    def __call__(
         self,
         exchange: str = None,
         symbol: str = None,
@@ -39,12 +39,12 @@ def get(
         if symbol:
             params["symbol"] = symbol
 
-        url_path = "/api/v1/trading-fees"
+        url_path = "/api/v1/cex/fees"
         return self.query(url_path, params)
 
     def exchanges(self) -> List[str]:
         """Fetch supported exchanges accepted by
-        [datamaxi.CexTradingFees.get](./#datamaxi.datamaxi.CexTradingFees.get)
+        [datamaxi.CexFee.get](./#datamaxi.datamaxi.CexFee.get)
         API.
 
         `GET /api/v1/trading-fees/exchanges`
@@ -54,7 +54,7 @@ def exchanges(self) -> List[str]:
         Returns:
             List of supported exchange
         """
-        url_path = "/api/v1/trading-fees/exchanges"
+        url_path = "/api/v1/cex/fees/exchanges"
         return self.query(url_path)
 
     def symbols(self, exchange: str) -> List[str]:
@@ -78,5 +78,5 @@ def symbols(self, exchange: str) -> List[str]:
             "exchange": exchange,
         }
 
-        url_path = "/api/v1/trading-fees/symbols"
+        url_path = "/api/v1/cex/fees/symbols"
         return self.query(url_path, params)
diff --git a/datamaxi/datamaxi/cex_orderbook.py b/datamaxi/datamaxi/cex_orderbook.py
deleted file mode 100644
index a277b83..0000000
--- a/datamaxi/datamaxi/cex_orderbook.py
+++ /dev/null
@@ -1,95 +0,0 @@
-from typing import Any, List, Dict, Union
-import pandas as pd
-from datamaxi.api import API
-from datamaxi.lib.utils import check_required_parameters
-from datamaxi.lib.utils import check_required_parameter
-
-
-class CexOrderbook(API):
-    """Client to fetch orderbook data from DataMaxi+ API."""
-
-    def __init__(self, api_key=None, **kwargs: Any):
-        """Initialize orderbook client.
-
-        Args:
-            api_key (str): The DataMaxi+ API key
-            **kwargs: Keyword arguments used by `datamaxi.api.API`.
-        """
-        super().__init__(api_key, **kwargs)
-
-    def get(
-        self,
-        exchange: str,
-        symbol: str,
-        pandas: bool = True,
-    ) -> Union[Dict, pd.DataFrame]:
-        """Fetch orderbook data
-
-        `GET /api/v1/orderbook`
-
-        <https://docs.datamaxiplus.com/rest/cex/orderbook/data>
-
-        Args:
-            exchange (str): Exchange name
-            symbol (str): symbol name
-            pandas (bool): Return data as pandas DataFrame
-
-        Returns:
-            CexOrderbook data in pandas DataFrame
-        """
-
-        check_required_parameters(
-            [
-                [exchange, "exchange"],
-                [symbol, "symbol"],
-            ]
-        )
-
-        params = {"exchange": exchange, "symbol": symbol}
-
-        res = self.query("/api/v1/orderbook", params)
-        if pandas:
-            df = pd.DataFrame(res)
-            df = df.set_index("d")
-            return df
-
-        return res
-
-    def exchanges(self) -> List[str]:
-        """Fetch supported exchanges accepted by
-        [datamaxi.CexOrderbook.get](./#datamaxi.datamaxi.CexOrderbook.get)
-        API.
-
-        `GET /api/v1/orderbook/exchanges`
-
-        <https://docs.datamaxiplus.com/rest/cex/orderbook/exchanges>
-
-        Returns:
-            List of supported exchange
-        """
-        url_path = "/api/v1/orderbook/exchanges"
-        return self.query(url_path)
-
-    def symbols(self, exchange: str) -> List[str]:
-        """Fetch supported symbols accepted by
-        [datamaxi.CexOrderbook.get](./#datamaxi.datamaxi.CexOrderbook.get)
-        API.
-
-        `GET /api/v1/orderbook/symbols`
-
-        <https://docs.datamaxiplus.com/rest/cex/orderbook/symbols>
-
-        Args:
-            exchange (str): Exchange name
-
-        Returns:
-            List of supported symbols
-        """
-        check_required_parameter(exchange, "exchange")
-
-        params = {
-            "exchange": exchange,
-        }
-
-        url_path = "/api/v1/orderbook/symbols"
-        return self.query(url_path, params)
diff --git a/datamaxi/datamaxi/cex_ticker.py b/datamaxi/datamaxi/cex_ticker.py
index 42a8c3b..eb2762b 100644
--- a/datamaxi/datamaxi/cex_ticker.py
+++ b/datamaxi/datamaxi/cex_ticker.py
@@ -2,14 +2,14 @@
 import pandas as pd
 from datamaxi.api import API
 from datamaxi.lib.utils import check_required_parameters
-from datamaxi.lib.utils import check_required_parameter
+from datamaxi.lib.constants import SPOT, FUTURES
 
 
 class CexTicker(API):
     """Client to fetch ticker data from DataMaxi+ API."""
 
     def __init__(self, api_key=None, **kwargs: Any):
-        """Initialize ticker client.
+        """Initialize cex ticker client.
 
         Args:
             api_key (str): The DataMaxi+ API key
@@ -21,6 +21,7 @@ def get(
         self,
         exchange: str,
         symbol: str,
+        market: str,
         pandas: bool = True,
     ) -> Union[Dict, pd.DataFrame]:
         """Fetch ticker data
@@ -32,6 +33,7 @@ def get(
         Args:
             exchange (str): Exchange name
             symbol (str): Symbol name
+            market (str): Market type (spot/futures)
             pandas (bool): Return data as pandas DataFrame
 
         Returns:
@@ -42,12 +44,17 @@ def get(
             [
                 [exchange, "exchange"],
                 [symbol, "symbol"],
+                [market, "market"],
             ]
         )
 
+        if market not in [SPOT, FUTURES]:
+            raise ValueError("market must be either spot or futures")
+
         params = {
             "exchange": exchange,
             "symbol": symbol,
+            "market": market,
         }
 
         res = self.query("/api/v1/ticker", params)
@@ -59,7 +66,10 @@ def get(
         else:
             return res
 
-    def exchanges(self) -> List[str]:
+    def exchanges(
+        self,
+        market: str,
+    ) -> List[str]:
         """Fetch supported exchanges accepted by
         [datamaxi.CexTicker.get](./#datamaxi.datamaxi.CexTicker.get)
         API.
@@ -68,13 +78,33 @@ def exchanges(self) -> List[str]:
 
         <https://docs.datamaxiplus.com/rest/cex/ticker/exchanges>
 
+        Args:
+            market (str): Market type (spot/futures)
+
         Returns:
             List of supported exchange
         """
+        check_required_parameters(
+            [
+                [market, "market"],
+            ]
+        )
+
+        if market not in [SPOT, FUTURES]:
+            raise ValueError("market must be either spot or futures")
+
+        params = {
+            "market": market,
+        }
+
         url_path = "/api/v1/ticker/exchanges"
-        return self.query(url_path)
+        return self.query(url_path, params)
 
-    def symbols(self, exchange: str) -> List[str]:
+    def symbols(
+        self,
+        exchange: str,
+        market: str,
+    ) -> List[str]:
         """Fetch supported symbols accepted by
         [datamaxi.CexTicker.get](./#datamaxi.datamaxi.CexTicker.get)
         API.
@@ -85,14 +115,24 @@ def symbols(self, exchange: str) -> List[str]:
 
         Args:
             exchange (str): Exchange name
+            market (str): Market type (spot/futures)
 
         Returns:
             List of supported symbols
         """
-        check_required_parameter(exchange, "exchange")
+        check_required_parameters(
+            [
+                [exchange, "exchange"],
+                [market, "market"],
+            ]
+        )
+
+        if market not in [SPOT, FUTURES]:
+            raise ValueError("market must be either spot or futures")
 
         params = {
             "exchange": exchange,
+            "market": market,
         }
 
         url_path = "/api/v1/ticker/symbols"
diff --git a/datamaxi/datamaxi/cex_token_updates.py b/datamaxi/datamaxi/cex_token.py
similarity index 85%
rename from datamaxi/datamaxi/cex_token_updates.py
rename to datamaxi/datamaxi/cex_token.py
index b567171..08d99a6 100644
--- a/datamaxi/datamaxi/cex_token_updates.py
+++ b/datamaxi/datamaxi/cex_token.py
@@ -1,9 +1,9 @@
 from typing import Any, Dict, Optional
 from datamaxi.api import API
-from datamaxi.lib.constants import BASE_URL
+from datamaxi.lib.constants import DESC, ASC
 
 
-class CexTokenUpdates(API):
+class CexToken(API):
     """Client to fetch token update data from DataMaxi+ API."""
 
     def __init__(self, api_key=None, **kwargs: Any):
@@ -13,16 +13,14 @@ def __init__(self, api_key=None, **kwargs: Any):
             api_key (str): The DataMaxi+ API key
             **kwargs: Keyword arguments used by `datamaxi.api.API`.
         """
-        if "base_url" not in kwargs:
-            kwargs["base_url"] = BASE_URL
         super().__init__(api_key, **kwargs)
 
-    def get(
+    def updates(
         self,
         type: Optional[str] = None,
         page: int = 1,
         limit: int = 1000,
-        sort: str = "desc",
+        sort: str = DESC,
     ) -> Dict[str, Any]:
         """Get token update data
 
@@ -45,7 +43,7 @@ def get(
         if limit < 1:
             raise ValueError("limit must be greater than 0")
 
-        if sort not in ["asc", "desc"]:
+        if sort not in [ASC, DESC]:
             raise ValueError("sort must be either asc or desc")
 
         if type is not None and type not in ["listed", "delisted"]:
@@ -58,7 +56,7 @@ def get(
             "sort": sort,
         }
 
-        res = self.query("/api/v1/cex/token-updates", params)
+        res = self.query("/api/v1/cex/token/updates", params)
         if res["data"] is None:
             raise ValueError("no data found")
 
diff --git a/datamaxi/datamaxi/cex_wallet_status.py b/datamaxi/datamaxi/cex_wallet_status.py
index 09f9842..3999145 100644
--- a/datamaxi/datamaxi/cex_wallet_status.py
+++ b/datamaxi/datamaxi/cex_wallet_status.py
@@ -6,7 +6,7 @@
 
 
 class CexWalletStatus(API):
-    """Client to fetch wallet status data from DataMaxi+ API."""
+    """Client to fetch transfer status data from DataMaxi+ API."""
 
     def __init__(self, api_key=None, **kwargs: Any):
         """Initialize wallet status client.
@@ -17,13 +17,13 @@ def __init__(self, api_key=None, **kwargs: Any):
         """
         super().__init__(api_key, **kwargs)
 
-    def get(
+    def __call__(
         self,
         exchange: str,
         asset: str,
         pandas: bool = True,
     ) -> Union[Dict, pd.DataFrame]:
-        """Fetch wallet status data
+        """Fetch transfer status data
 
         `GET /api/v1/wallet-status`
 
@@ -60,7 +60,7 @@ def get(
 
     def exchanges(self) -> List[str]:
         """Fetch supported exchanges accepted by
-        [datamaxi.CexWalletStatus.get](./#datamaxi.datamaxi.CexWalletStatus.get)
+        [datamaxi.CexWalletStatus.__call__](./#datamaxi.datamaxi.CexWalletStatus.__call__)
         API.
 
         `GET /api/v1/wallet-status/exchanges`
@@ -75,7 +75,7 @@ def exchanges(self) -> List[str]:
 
     def assets(self, exchange: str) -> List[str]:
         """Fetch supported assets accepted by
-        [datamaxi.CexWalletStatus.get](./#datamaxi.datamaxi.CexWalletStatus.get)
+        [datamaxi.CexWalletStatus.__call__](./#datamaxi.datamaxi.CexWalletStatus.__call__)
         API.
 
         `GET /api/v1/wallet-status/assets`
diff --git a/datamaxi/datamaxi/dex.py b/datamaxi/datamaxi/dex.py
index 205cfd9..51e3e53 100644
--- a/datamaxi/datamaxi/dex.py
+++ b/datamaxi/datamaxi/dex.py
@@ -1,8 +1,10 @@
 from typing import Any, Callable, Tuple, List, Dict, Union
+import logging
 from datamaxi.api import API
 import pandas as pd
 from datamaxi.lib.utils import check_required_parameters
 from datamaxi.datamaxi.utils import convert_data_to_data_frame
+from datamaxi.lib.constants import ASC, DESC
 
 
 class Dex(API):
@@ -49,6 +51,8 @@ def trade(
         Returns:
             DEX trade data in pandas DataFrame and next request function
         """
+        logging.warning("warning: dex related endpoints are experimental")
+
         check_required_parameters(
             [
                 [chain, "chain"],
@@ -67,7 +71,7 @@ def trade(
                 "fromDateTime and toDateTime cannot be set at the same time"
             )
 
-        if sort not in ["asc", "desc"]:
+        if sort not in [ASC, DESC]:
             raise ValueError("sort must be either asc or desc")
 
         params = {
@@ -138,6 +142,8 @@ def candle(
         Returns:
             DEX candle data in pandas DataFrame and next request function
         """
+        logging.warning("warning: dex related endpoints are experimental")
+
         check_required_parameters(
             [
                 [chain, "chain"],
@@ -158,7 +164,7 @@ def candle(
                 "fromDateTime and toDateTime cannot be set at the same time"
             )
 
-        if sort not in ["asc", "desc"]:
+        if sort not in [ASC, DESC]:
             raise ValueError("sort must be either asc or desc")
 
         params = {
@@ -229,6 +235,8 @@ def liquidity(
         Returns:
             DEX liquidity data in pandas DataFrame and next request function
         """
+        logging.warning("warning: dex related endpoints are experimental")
+
         check_required_parameters(
             [
                 [chain, "chain"],
@@ -248,7 +256,7 @@ def liquidity(
                 "fromDateTime and toDateTime cannot be set at the same time"
             )
 
-        if sort not in ["asc", "desc"]:
+        if sort not in [ASC, DESC]:
             raise ValueError("sort must be either asc or desc")
 
         params = {
@@ -282,7 +290,6 @@ def next_request():
         if pandas:
             df = convert_data_to_data_frame(
                 res["data"],
-                ["b", "l"],
             )
             return df, next_request
         else:
@@ -301,6 +308,7 @@ def chains(self) -> List[str]:
         Returns:
             List of supported chains
         """
+        logging.warning("warning: dex related endpoints are experimental")
 
         url_path = "/api/v1/dex/chains"
         return self.query(url_path)
@@ -318,6 +326,7 @@ def exchanges(self) -> List[str]:
         Returns:
             List of supported exchanges
         """
+        logging.warning("warning: dex related endpoints are experimental")
 
         url_path = "/api/v1/dex/exchanges"
         return self.query(url_path)
@@ -359,5 +368,7 @@ def intervals(self) -> List[str]:
         Returns:
             List of supported intervals
         """
+        logging.warning("warning: dex related endpoints are experimental")
+
         url_path = "/api/v1/dex/intervals"
         return self.query(url_path)
diff --git a/datamaxi/datamaxi/forex.py b/datamaxi/datamaxi/forex.py
index eb66708..3c3e619 100644
--- a/datamaxi/datamaxi/forex.py
+++ b/datamaxi/datamaxi/forex.py
@@ -16,7 +16,10 @@ def __init__(self, api_key=None, **kwargs: Any):
         """
         super().__init__(api_key, **kwargs)
 
-    def get(
+        self.__module__ = __name__
+        self.__qualname__ = self.__class__.__qualname__
+
+    def __call__(
         self,
         symbol: str,
         pandas: bool = True,
@@ -43,9 +46,7 @@ def get(
         res = self.query("/api/v1/forex", params)
 
         if pandas:
-            df = pd.DataFrame(res)
-            df = df.set_index("d")
-            return df
+            return pd.DataFrame([res])
         else:
             return res
 
diff --git a/datamaxi/datamaxi/funding_rate.py b/datamaxi/datamaxi/funding_rate.py
index edf9d9c..34c248d 100644
--- a/datamaxi/datamaxi/funding_rate.py
+++ b/datamaxi/datamaxi/funding_rate.py
@@ -4,6 +4,7 @@
 from datamaxi.lib.utils import check_required_parameter
 from datamaxi.lib.utils import check_required_parameters
 from datamaxi.datamaxi.utils import convert_data_to_data_frame
+from datamaxi.lib.constants import ASC, DESC
 
 
 class FundingRate(API):
@@ -18,7 +19,7 @@ def __init__(self, api_key=None, **kwargs: Any):
         """
         super().__init__(api_key, **kwargs)
 
-    def get(
+    def history(
         self,
         exchange: str,
         symbol: str,
@@ -26,7 +27,7 @@ def get(
         limit: int = 1000,
         fromDateTime: str = None,
         toDateTime: str = None,
-        sort: str = "desc",
+        sort: str = DESC,
         pandas: bool = True,
     ) -> Union[Tuple[Dict, Callable], Tuple[pd.DataFrame, Callable]]:
         """Fetch historical funding rate data
@@ -66,7 +67,7 @@ def get(
                 "fromDateTime and toDateTime cannot be set at the same time"
             )
 
-        if sort not in ["asc", "desc"]:
+        if sort not in [ASC, DESC]:
             raise ValueError("sort must be either asc or desc")
 
         params = {
@@ -79,7 +80,7 @@ def get(
             "sort": sort,
         }
 
-        res = self.query("/api/v1/funding-rate", params)
+        res = self.query("/api/v1/funding-rate/history", params)
         if res["data"] is None or len(res["data"]) == 0:
             raise ValueError("no data found")
 
@@ -101,7 +102,7 @@ def next_request():
         else:
             return res, next_request
 
-    def getLatest(
+    def latest(
         self,
         sort: str = None,
         limit: int = None,
@@ -142,7 +143,7 @@ def getLatest(
         res = self.query("/api/v1/funding-rate/latest", params)
 
         if pandas:
-            df = pd.DataFrame(res)
+            df = pd.DataFrame([res])
             df = df.set_index("d")
             return df
         else:
diff --git a/datamaxi/datamaxi/premium.py b/datamaxi/datamaxi/premium.py
index 186797f..9bf8cfd 100644
--- a/datamaxi/datamaxi/premium.py
+++ b/datamaxi/datamaxi/premium.py
@@ -1,7 +1,6 @@
 from typing import Any, List, Union
 import pandas as pd
 from datamaxi.api import API
-from datamaxi.lib.utils import check_required_parameters
 
 
 class Premium(API):
@@ -16,13 +15,21 @@ def __init__(self, api_key=None, **kwargs: Any):
         """
         super().__init__(api_key, **kwargs)
 
-    def get(
+        self.__module__ = __name__
+        self.__qualname__ = self.__class__.__qualname__
+
+    def __call__(  # noqa: C901
         self,
+        source_exchange: str = None,
+        target_exchange: str = None,
+        asset: str = None,
+        source_quote: str = None,
+        target_quote: str = None,
         sort: str = None,
-        limit: int = None,
-        symbol: str = None,
-        sourceExchange: str = None,
-        targetExchange: str = None,
+        key: str = None,
+        page: int = 1,
+        limit: int = 100,
+        currency: str = None,
         pandas: bool = True,
     ) -> Union[List, pd.DataFrame]:
         """Fetch premium data
@@ -31,11 +38,16 @@ def get(
         <https://docs.datamaxiplus.com/rest/premium/premium>
 
         Args:
+            source_exchange (str): Source exchange name
+            target_exchange (str): Target exchange name
+            asset (str): Asset name
+            source_quote (str): Source quote currency
+            target_quote (str): Target quote currency
+            currency (str): Currency applied to cross-exchange price differences
             sort (str): Sort data by `asc` or `desc`
-            limit (int): Limit number of data to return
-            symbol (str): Symbol name
-            sourceExchange (str): Source exchange name
-            targetExchange (str): Target exchange name
+            key (str): Key to sort data
+            page (int): Page number
+            limit (int): Page size
             pandas (bool): Return data as pandas DataFrame
 
         Returns:
@@ -43,25 +55,42 @@ def get(
         """
         params = {}
 
+        if source_exchange is not None:
+            params["sourceExchange"] = source_exchange
+
+        if target_exchange is not None:
+            params["targetExchange"] = target_exchange
+
+        if asset is not None:
+            params["asset"] = asset
+
+        if source_quote is not None:
+            params["sourceQuote"] = source_quote
+
+        if target_quote is not None:
+            params["targetQuote"] = target_quote
+
         if sort is not None:
             params["sort"] = sort
 
-        if limit is not None:
-            params["limit"] = limit
+        if page is not None:
+            params["page"] = page
 
-        if symbol is not None:
-            params["symbol"] = symbol
+        if key is not None:
+            params["key"] = key
 
-        if sourceExchange is not None:
-            params["sourceExchange"] = sourceExchange
+        if limit is not None:
+            params["limit"] = limit
 
-        if targetExchange is not None:
-            params["targetExchange"] = targetExchange
+        if currency is not None:
+            params["currency"] = currency
 
         res = self.query("/api/v1/premium", params)
+        if res["data"] is None or len(res["data"]) == 0:
+            raise ValueError("no data found")
 
         if pandas:
-            df = pd.DataFrame(res)
+            df = pd.DataFrame(res["data"])
             df = df.set_index("d")
             return df
         else:
@@ -81,30 +110,3 @@ def exchanges(self) -> List[str]:
         """
         url_path = "/api/v1/premium/exchanges"
         return self.query(url_path)
-
-    def symbols(self, sourceExchange: str, targetExchange: str) -> List[str]:
-        """Fetch supported symbols accepted by
-        [datamaxi.Premium.get](./#datamaxi.datamaxi.Premium.get)
-        API.
-
-        `GET /api/v1/premium/symbols`
-
-        <https://docs.datamaxiplus.com/rest/premium/symbols>
-
-        Args:
-            sourceExchange (str): Source exchange name
-            targetExchange (str): Target exchange name
-
-        Returns:
-            List of supported symbols
-        """
-        check_required_parameters(
-            [
-                [sourceExchange, "sourceExchange"],
-                [targetExchange, "targetExchange"],
-            ]
-        )
-
-        params = {"sourceExchange": sourceExchange, "targetExchange": targetExchange}
-        url_path = "/api/v1/premium/symbols"
-        return self.query(url_path, params)
diff --git a/datamaxi/google/__init__.py b/datamaxi/google/__init__.py
deleted file mode 100644
index 0bb3e20..0000000
--- a/datamaxi/google/__init__.py
+++ /dev/null
@@ -1,53 +0,0 @@
-from typing import Any, List, Union
-import pandas as pd
-from datamaxi.api import API
-from datamaxi.lib.utils import check_required_parameter
-from datamaxi.lib.utils import postprocess
-from datamaxi.lib.constants import BASE_URL
-
-
-class Google(API):
-    """Client to fetch Google trend data from DataMaxi+ API."""
-
-    def __init__(self, api_key=None, **kwargs: Any):
-        """Initialize the object.
-
-        Args:
-            api_key (str): The DataMaxi+ API key
-            **kwargs: Keyword arguments used by `datamaxi.api.API`.
-        """
-        if "base_url" not in kwargs:
-            kwargs["base_url"] = BASE_URL
-        super().__init__(api_key, **kwargs)
-
-    def keywords(self) -> List[str]:
-        """Get Google trend supported keywords
-
-        `GET /api/v1/google/keywords`
-
-        <https://docs.datamaxiplus.com/rest/trend/google/keywords>
-
-        Returns:
-            List of supported Google trend keywords
-        """
-        url_path = "/api/v1/google/keywords"
-        return self.query(url_path)
-
-    @postprocess()
-    def trend(self, keyword: str, pandas: bool = True) -> Union[List, pd.DataFrame]:
-        """Get Google trend for given keyword
-
-        `GET /api/v1/google/trend`
-
-        <https://docs.datamaxiplus.com/rest/trend/google/trend>
-
-        Args:
-            keyword (str): keyword to search for
-            pandas (bool): Return data as pandas DataFrame
-
-        Returns:
-            Google trend data
-        """
-        check_required_parameter(keyword, "keyword")
-        params = {"keyword": keyword}
-        return self.query("/api/v1/google/trend", params)
diff --git a/datamaxi/lib/constants.py b/datamaxi/lib/constants.py
index 150d166..76d1e55 100644
--- a/datamaxi/lib/constants.py
+++ b/datamaxi/lib/constants.py
@@ -1 +1,29 @@
-BASE_URL = "https://api.datamaxiplus.com"
+from typing import Final
+
+BASE_URL: Final = "https://api.datamaxiplus.com"
+SPOT: Final = "spot"
+FUTURES: Final = "futures"
+USD: Final = "USD"
+
+INTERVAL_1M: Final = "1m"
+INTERVAL_5M: Final = "5m"
+INTERVAL_15M: Final = "15m"
+INTERVAL_30M: Final = "30m"
+INTERVAL_1H: Final = "1h"
+INTERVAL_4H: Final = "4h"
+INTERVAL_12H: Final = "12h"
+INTERVAL_1D: Final = "1d"
+
+SUPPORTED_INTERVALS: Final = [
+    INTERVAL_1M,
+    INTERVAL_5M,
+    INTERVAL_15M,
+    INTERVAL_30M,
+    INTERVAL_1H,
+    INTERVAL_4H,
+    INTERVAL_12H,
+    INTERVAL_1D,
+]
+
+ASC: Final = "asc"
+DESC: Final = "desc"
diff --git a/docs/google-trend.md b/docs/cex-fee.md
similarity index 62%
rename from docs/google-trend.md
rename to docs/cex-fee.md
index 37cb640..ba8b3d3 100644
--- a/docs/google-trend.md
+++ b/docs/cex-fee.md
@@ -1,6 +1,6 @@
-# Google Trend
+# CEX Fees
 
-::: datamaxi.google
+::: datamaxi.datamaxi.CexFee
     options:
       show_submodules: true
       show_source: false
diff --git a/docs/cex-token-updates.md b/docs/cex-token-updates.md
deleted file mode 100644
index ee0c0af..0000000
--- a/docs/cex-token-updates.md
+++ /dev/null
@@ -1,6 +0,0 @@
-# CEX Token Updates
-
-::: datamaxi.datamaxi.CexTokenUpdates
-    options:
-      show_submodules: true
-      show_source: false
diff --git a/docs/cex-orderbook.md b/docs/cex-token.md
similarity index 56%
rename from docs/cex-orderbook.md
rename to docs/cex-token.md
index 71c6891..e7f30cf 100644
--- a/docs/cex-orderbook.md
+++ b/docs/cex-token.md
@@ -1,6 +1,6 @@
-# CEX Orderbook
+# CEX Token
 
-::: datamaxi.datamaxi.CexOrderbook
+::: datamaxi.datamaxi.CexToken
     options:
       show_submodules: true
       show_source: false
diff --git a/docs/cex-trading-fees.md b/docs/cex-trading-fees.md
deleted file mode 100644
index fd0560d..0000000
--- a/docs/cex-trading-fees.md
+++ /dev/null
@@ -1,6 +0,0 @@
-# CEX Trading Fees
-
-::: datamaxi.datamaxi.CexTradingFees
-    options:
-      show_submodules: true
-      show_source: false
diff --git a/mkdocs.yml b/mkdocs.yml
index 1dd3f20..d5061a3 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -34,18 +34,15 @@ nav:
   - CEX:
       - Candle: cex-candle.md
       - Ticker: cex-ticker.md
-      - Orderbook: cex-orderbook.md
-      - Trading Fees: cex-trading-fees.md
+      - Fees: cex-fee.md
       - Wallet Status: cex-wallet-status.md
       - Announcement: cex-announcement.md
-      - Token Updates: cex-token-updates.md
+      - Token: cex-token.md
   - DEX: dex.md
   - Funding Rate: funding-rate.md
   - Premium: premium.md
   - Forex: forex.md
-  - Trend:
-      - Naver Trend: naver-trend.md
-      - Google Trend: google-trend.md
+  - Naver Trend: naver-trend.md
   - Telegram: telegram.md
 
 theme:
diff --git a/pyproject.toml b/pyproject.toml
index c5545e4..9b47c87 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,10 +1,10 @@
 [project]
 name = "datamaxi"
-version = "0.24.0"
+version = "0.25.0"
 authors = [
   { name="Bisonai", email="business@bisonai.com" },
 ]
-description = "Official Python client for DataMaxi+ API"
+description = "Official Python SDK for DataMaxi+ API"
 readme = "README.md"
 requires-python = ">=3.8"
 classifiers = [
diff --git a/tests/google/test_google_keywords.py b/tests/google/test_google_keywords.py
deleted file mode 100644
index e5512a9..0000000
--- a/tests/google/test_google_keywords.py
+++ /dev/null
@@ -1,24 +0,0 @@
-import responses
-
-from datamaxi.google import Google as Client
-from tests.util import random_str
-from tests.util import mock_http_response
-
-
-mock_item = ["a", "b", "c"]
-
-key = random_str()
-client = Client(key)
-
-
-@mock_http_response(
-    responses.GET,
-    "/v1/google/keywords",
-    mock_item,
-    200,
-)
-def test_google_keywords():
-    """Tests the API endpoint to get google trend keywords."""
-
-    response = client.keywords()
-    response.should.equal(mock_item)
diff --git a/tests/google/test_google_trend.py b/tests/google/test_google_trend.py
deleted file mode 100644
index b2d066b..0000000
--- a/tests/google/test_google_trend.py
+++ /dev/null
@@ -1,28 +0,0 @@
-import responses
-
-from datamaxi.google import Google as Client
-from tests.util import random_str
-from tests.util import mock_http_response
-from urllib.parse import urlencode
-
-
-mock_item = [["Timestamp", "Ethereum"], ["2020-01-01 00:00", "9723"]]
-
-key = random_str()
-client = Client(key)
-
-req_params = {"keyword": "Ethereum"}
-params = {"keyword": "Ethereum", "pandas": False}
-
-
-@mock_http_response(
-    responses.GET,
-    "/v1/google/trend\\?" + urlencode(req_params),
-    mock_item,
-    200,
-)
-def test_google_trend():
-    """Tests the API endpoint to get google trend."""
-
-    response = client.trend(**params)
-    response.should.equal(mock_item)
diff --git a/tests/naver/test_naver_symbols.py b/tests/naver/test_naver_symbols.py
deleted file mode 100644
index 6aa9410..0000000
--- a/tests/naver/test_naver_symbols.py
+++ /dev/null
@@ -1,24 +0,0 @@
-import responses
-
-from datamaxi.naver import Naver as Client
-from tests.util import random_str
-from tests.util import mock_http_response
-
-
-mock_item = ["a", "b", "c"]
-
-key = random_str()
-client = Client(key)
-
-
-@mock_http_response(
-    responses.GET,
-    "/v1/naver/symbols",
-    mock_item,
-    200,
-)
-def test_naver_symbols():
-    """Tests the API endpoint to get naver trend token symbols."""
-
-    response = client.symbols()
-    response.should.equal(mock_item)
diff --git a/tests/naver/test_naver_trend.py b/tests/naver/test_naver_trend.py
deleted file mode 100644
index c93c2ee..0000000
--- a/tests/naver/test_naver_trend.py
+++ /dev/null
@@ -1,28 +0,0 @@
-import responses
-
-from datamaxi.naver import Naver as Client
-from tests.util import random_str
-from tests.util import mock_http_response
-from urllib.parse import urlencode
-
-
-mock_item = [["Date", "Ethereum"], ["2020-01-01 00:00", "9723"]]
-
-key = random_str()
-client = Client(key)
-
-req_params = {"symbol": "ETH"}
-params = {"symbol": "ETH", "pandas": False}
-
-
-@mock_http_response(
-    responses.GET,
-    "/v1/naver/trend\\?" + urlencode(req_params),
-    mock_item,
-    200,
-)
-def test_naver_trend():
-    """Tests the API endpoint to get naver trend."""
-
-    response = client.trend(**params)
-    response.should.equal(mock_item)
diff --git a/tests/test_call.py b/tests/test_call.py
new file mode 100644
index 0000000..474813c
--- /dev/null
+++ b/tests/test_call.py
@@ -0,0 +1,87 @@
+import os
+import logging
+from datamaxi import Datamaxi
+
+
+logging.basicConfig(level=logging.INFO)
+
+api_key = os.getenv("API_KEY")
+base_url = os.getenv("BASE_URL") or "https://api.datamaxiplus.com"
+
+datamaxi = Datamaxi(api_key=api_key, base_url=base_url)
+
+
+def test_cex_candle():
+    datamaxi.cex.candle(
+        exchange="binance",
+        symbol="BTC-USDT",
+        interval="1m",
+        market="spot",
+    )
+    datamaxi.cex.candle.exchanges(market="spot")
+    datamaxi.cex.candle.symbols(exchange="binance", market="spot")
+    datamaxi.cex.candle.intervals()
+
+
+def test_cex_ticker():
+    datamaxi.cex.ticker.exchanges(market="spot")
+    datamaxi.cex.ticker.symbols(exchange="binance", market="spot")
+
+
+def test_cex_token_updates():
+    datamaxi.cex.token.updates()
+
+
+def test_cex_fees():
+    datamaxi.cex.fee(exchange="binance", symbol="BTC-USDT")
+    datamaxi.cex.fee.exchanges()
+    datamaxi.cex.fee.symbols(exchange="binance")
+
+
+def test_cex_announcement():
+    datamaxi.cex.announcement()
+
+
+def test_cex_wallet_status():
+    datamaxi.cex.wallet_status(exchange="binance", asset="BTC")
+    datamaxi.cex.wallet_status.exchanges()
+    datamaxi.cex.wallet_status.assets(exchange="binance")
+
+
+def test_test_funding_rate():
+    datamaxi.funding_rate.history(exchange="binance", symbol="BTC-USDT")
+    datamaxi.funding_rate.latest(exchange="binance", symbol="BTC-USDT")
+    datamaxi.funding_rate.exchanges()
+    datamaxi.funding_rate.symbols(exchange="binance")
+
+
+def test_dex():
+    datamaxi.dex.chains()
+    datamaxi.dex.exchanges()
+    datamaxi.dex.pools(exchange="klayswap", chain="kaia_mainnet")
+    datamaxi.dex.intervals()
+    datamaxi.dex.trade(
+        exchange="pancakeswap",
+        chain="bsc_mainnet",
+        pool="0xb24cd29e32FaCDDf9e73831d5cD1FFcd1e535423",
+    )
+    datamaxi.dex.liquidity(
+        exchange="pancakeswap",
+        chain="bsc_mainnet",
+        pool="0xb24cd29e32FaCDDf9e73831d5cD1FFcd1e535423",
+    )
+    datamaxi.dex.trade(
+        exchange="pancakeswap",
+        chain="bsc_mainnet",
+        pool="0xb24cd29e32FaCDDf9e73831d5cD1FFcd1e535423",
+    )
+
+
+def test_forex():
+    datamaxi.forex.symbols()
+    datamaxi.forex(symbol="USD-KRW")
+
+
+def test_premium():
+    datamaxi.premium()
+    datamaxi.premium.exchanges()