diff --git a/py/api.py b/py/api.py
index f9e5ca2..a5d2a97 100644
--- a/py/api.py
+++ b/py/api.py
@@ -41,15 +41,8 @@ class API:
         @self.app.route('/interstellar/api/db', methods=['POST'])
         def db_manipulate():
             action = request.args.get('action')
-            data = request.args.get('data')
             if action == "create_account":
-                self.db.add_user(data)
-            if action == "change_password":
-                self.db.update_password(data)
-            if action == "get_data":
-                self.db.get_additional_info(data)
-            if action == "check_credentials":
-                self.db.check_credentials(data)
+                print("ahh")
 
 
         ssl_context = ('cert.pem', 'key.pem')
diff --git a/py/db.py b/py/db.py
index 37c9ca0..5116a93 100644
--- a/py/db.py
+++ b/py/db.py
@@ -6,46 +6,36 @@ class DB:
     def __init__(self):
         self.database = {}
 
-    @staticmethod
-    def hash_password(password):
+    def _hash_password(self, password: str) -> str:
         salt = "your_secret_salt"
         hashed_password = hashlib.sha256((password + salt).encode()).hexdigest()
         return hashed_password
 
-    def add_user(self, data):
-        username = data.get['username']
-        password = data.get['password']
-        hashed_password = self.hash_password(password)
+    def add_user(self, username: str, password: str) -> None:
+        hashed_password = self._hash_password(password)
         user_data = {"hashed_password": hashed_password}
         self.database[username] = user_data
 
-    def update_password(self, data):
-        username = data.get['username']
-        old_password = data.get['old_password']
-        new_password = data.get['new_password']
-        if not self.check_credentials(data):
+    def update_password(self, username: str, old_password: str, new_password: str) -> bool:
+        if not self.check_credentials(username, old_password):
             return False
 
-        hashed_new_password = self.hash_password(new_password)
+        hashed_new_password = self._hash_password(new_password)
         self.database[username].update({"hashed_password": hashed_new_password})
         return True
 
-    def check_credentials(self, data):
-        username = data.get['username']
-        password = data.get['password']
+    def check_credentials(self, username: str, password: str) -> bool:
         if username not in self.database:
             return False
 
         stored_hashed_password = self.database[username]["hashed_password"]
-        entered_hashed_password = self.hash_password(password)
+        entered_hashed_password = self._hash_password(password)
         return stored_hashed_password == entered_hashed_password
 
-    def get_additional_info(self, data):
-        username = data.get['username']
-        password = data.get['password']
-        if not self.check_credentials(data):
+    def get_additional_info(self, username: str, password: str) -> dict | None:
+        if not self.check_credentials(username, password):
             return None
 
         send_back = self.database[username]
         del send_back['hashed_password']
-        return send_back
+        return send_back
\ No newline at end of file