diff --git a/obsws_cli/__about__.py b/obsws_cli/__about__.py
index 2525e84..fb70b53 100644
--- a/obsws_cli/__about__.py
+++ b/obsws_cli/__about__.py
@@ -1,4 +1,4 @@
 # SPDX-FileCopyrightText: 2025-present onyx-and-iris <code@onyxandiris.online>
 #
 # SPDX-License-Identifier: MIT
-__version__ = "0.16.9"
+__version__ = "0.16.10"
diff --git a/obsws_cli/app.py b/obsws_cli/app.py
index 36b2b0c..b17bd32 100644
--- a/obsws_cli/app.py
+++ b/obsws_cli/app.py
@@ -1,6 +1,7 @@
 """Command line interface for the OBS WebSocket API."""
 
 import importlib
+import logging
 from typing import Annotated
 
 import obsws_python as obsws
@@ -44,6 +45,15 @@ def version_callback(value: bool):
         raise typer.Exit()
 
 
+def setup_logging(debug: bool):
+    """Set up logging for the application."""
+    log_level = logging.DEBUG if debug else logging.CRITICAL
+    logging.basicConfig(
+        level=log_level,
+        format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
+    )
+
+
 @app.callback()
 def main(
     ctx: typer.Context,
@@ -60,7 +70,11 @@ def main(
     port: Annotated[
         int,
         typer.Option(
-            '--port', '-P', envvar='OBS_PORT', help='WebSocket port', show_default=4455
+            '--port',
+            '-P',
+            envvar='OBS_PORT',
+            help='WebSocket port',
+            show_default=4455,
         ),
     ] = settings.get('port'),
     password: Annotated[
@@ -94,6 +108,19 @@ def main(
             callback=version_callback,
         ),
     ] = False,
+    debug: Annotated[
+        bool,
+        typer.Option(
+            '--debug',
+            '-d',
+            envvar='OBS_DEBUG',
+            is_eager=True,
+            help='Enable debug logging',
+            show_default=False,
+            callback=setup_logging,
+            hidden=True,
+        ),
+    ] = settings.get('debug'),
 ):
     """obsws_cli is a command line interface for the OBS WebSocket API."""
     ctx.obj = ctx.with_resource(obsws.ReqClient(**ctx.params))
diff --git a/obsws_cli/settings.py b/obsws_cli/settings.py
index 47164a0..f784aea 100644
--- a/obsws_cli/settings.py
+++ b/obsws_cli/settings.py
@@ -22,6 +22,8 @@ class Settings(UserDict):
 
     """
 
+    PREFIX = 'OBS_'
+
     def __init__(self, *args, **kwargs):
         """Initialize the Settings object."""
         kwargs.update(
@@ -34,19 +36,25 @@ class Settings(UserDict):
 
     def __getitem__(self, key: str) -> SettingsValue:
         """Get a setting value by key."""
-        if not key.startswith('OBS_'):
-            key = f'OBS_{key}'
-        return self.data[key.upper()]
+        key = key.upper()
+        if not key.startswith(Settings.PREFIX):
+            key = f'{Settings.PREFIX}{key}'
+        return self.data[key]
 
     def __setitem__(self, key: str, value: SettingsValue):
         """Set a setting value by key."""
-        if not key.startswith('OBS_'):
-            key = f'OBS_{key}'
-        self.data[key.upper()] = value
+        key = key.upper()
+        if not key.startswith(Settings.PREFIX):
+            key = f'{Settings.PREFIX}{key}'
+        self.data[key] = value
 
 
 _settings = Settings(
-    OBS_HOST='localhost', OBS_PORT=4455, OBS_PASSWORD='', OBS_TIMEOUT=5
+    OBS_HOST='localhost',
+    OBS_PORT=4455,
+    OBS_PASSWORD='',
+    OBS_TIMEOUT=5,
+    OBS_DEBUG=False,
 )