diff --git a/client/python/karanage/karanage/state.py b/client/python/karanage/karanage/state.py
index f94fad5..77ebab6 100644
--- a/client/python/karanage/karanage/state.py
+++ b/client/python/karanage/karanage/state.py
@@ -72,13 +72,13 @@ class KaranageState:
                 f"Fail send message: '{ret.url}'", ret.status, ret.data
             )
 
-    def gets(self, topic: Optional[str] = None, since: Union[None, str, datetime] = None) -> List[StateData]:
+    def get(self, topic: str, since: Union[None, str, datetime] = None) -> Optional[StateData]:
         """Get all the topic fom the server.
         :param since: ISO1866 time value.
         :return: A dictionary with the requested data.
         """
         param = {
-            "mode":"raw" # request raw mode to have the timestant in a float in second
+            "mode":"raw" # request raw mode to have the timestamp in a float in second
         }
         if since is not None:
             if type(since) is str:
@@ -89,6 +89,31 @@ class KaranageState:
                 raise KaranageException(
                     f"Wrong input parameter type Must be a str or datetime: '{type(since)}'")
         ret = self.connection.get("state", topic, params=param)
+        if ret is None:
+            raise KaranageException(
+                f"Fail send message sub-library return None")
+        if ret.status is not None and 200 <= ret.status <= 299:
+            return convert_to_state_data(ret.data, topic)
+        return None
+        #raise KaranageException(f"Fail get data: '{ret.url}'", ret.status, ret.data)
+
+    def gets(self, since: Union[None, str, datetime] = None) -> List[StateData]:
+        """Get all the topic fom the server.
+        :param since: ISO1866 time value.
+        :return: A dictionary with the requested data.
+        """
+        param = {
+            "mode":"raw" # request raw mode to have the timestamp in a float in second
+        }
+        if since is not None:
+            if type(since) is str:
+                param["since"] = since
+            if type(since) is datetime:
+                param["since"] = since.replace(tzinfo=timezone.utc).isoformat()
+            else:
+                raise KaranageException(
+                    f"Wrong input parameter type Must be a str or datetime: '{type(since)}'")
+        ret = self.connection.get("state", params=param)
         if ret is None:
             raise KaranageException(
                 f"Fail send message sub-library return None")
diff --git a/client/python/karanage_tools/bin/karanage-system b/client/python/karanage_tools/bin/karanage-system
index 48a69b0..ccde738 100755
--- a/client/python/karanage_tools/bin/karanage-system
+++ b/client/python/karanage_tools/bin/karanage-system
@@ -1,2 +1,3 @@
 #!/bin/python3
 from karanage_tools import karanage_system
+karanage_system.main()
\ No newline at end of file
diff --git a/client/python/karanage_tools/bin/karanage-tools-state-get b/client/python/karanage_tools/bin/karanage-tools-state-get
index 89f05e0..d9f39a4 100755
--- a/client/python/karanage_tools/bin/karanage-tools-state-get
+++ b/client/python/karanage_tools/bin/karanage-tools-state-get
@@ -1,2 +1,3 @@
 #!/bin/python3
 from karanage_tools import karanage_tools_state_get
+karanage_tools_state_get.main()
\ No newline at end of file
diff --git a/client/python/karanage_tools/bin/karanage-tools-state-history-get b/client/python/karanage_tools/bin/karanage-tools-state-history-get
index 41ff1c0..cd3d733 100755
--- a/client/python/karanage_tools/bin/karanage-tools-state-history-get
+++ b/client/python/karanage_tools/bin/karanage-tools-state-history-get
@@ -1,2 +1,3 @@
 #!/bin/python3
 from karanage_tools import karanage_tools_state_history_get
+karanage_tools_state_history_get.main()
\ No newline at end of file
diff --git a/client/python/karanage_tools/karanage_tools/karanage_system.py b/client/python/karanage_tools/karanage_tools/karanage_system.py
index 8e8bdf3..36817c0 100755
--- a/client/python/karanage_tools/karanage_tools/karanage_system.py
+++ b/client/python/karanage_tools/karanage_tools/karanage_system.py
@@ -141,8 +141,7 @@ def agglutinate(configuration, name, data):
         return filter(data, configuration[name]["include"])
     return none
 
-
-if __name__ == "__main__":
+def main():
     # Load arguments:
     parser = argparse.ArgumentParser()
     parser.add_argument(
@@ -233,3 +232,6 @@ if __name__ == "__main__":
         except KaranageException as ex:
             print(f"Can not send to the server: {ex}")
         time.sleep(configuration["config"]["sleep"])
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/client/python/karanage_tools/karanage_tools/karanage_tools_state_get.py b/client/python/karanage_tools/karanage_tools/karanage_tools_state_get.py
index 9ebe4d2..6e170ea 100755
--- a/client/python/karanage_tools/karanage_tools/karanage_tools_state_get.py
+++ b/client/python/karanage_tools/karanage_tools/karanage_tools_state_get.py
@@ -22,7 +22,7 @@ from karanage import (
 )
 
 
-if __name__ == "__main__":
+def main():
     # Load arguments:
     parser = argparse.ArgumentParser()
     parser.add_argument("-C", "--connection", type=str, help="json configuration file")
@@ -57,3 +57,6 @@ if __name__ == "__main__":
             break
         else:
             time.sleep(1)
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file
diff --git a/client/python/karanage_tools/karanage_tools/karanage_tools_state_history_get.py b/client/python/karanage_tools/karanage_tools/karanage_tools_state_history_get.py
index d50202b..76ab6d7 100755
--- a/client/python/karanage_tools/karanage_tools/karanage_tools_state_history_get.py
+++ b/client/python/karanage_tools/karanage_tools/karanage_tools_state_history_get.py
@@ -17,7 +17,7 @@ from typing import Dict, List
 from karanage import KaranageConnection, KaranageState
 
 
-if __name__ == "__main__":
+def main():
     # Load arguments:
     parser = argparse.ArgumentParser()
     parser.add_argument("-C", "--connection", type=str, help="json configuration file")
@@ -53,3 +53,6 @@ if __name__ == "__main__":
             topic=args.topic, since=args.since, since_id=args.since_id, limit=args.limit
         )
         print(f"Ret = {json.dumps(data, indent=4)}")
+
+if __name__ == "__main__":
+    main()
\ No newline at end of file