diff --git a/obsws_cli/group.py b/obsws_cli/group.py
index 139d7cb..b619cab 100644
--- a/obsws_cli/group.py
+++ b/obsws_cli/group.py
@@ -2,6 +2,7 @@
 
 import typer
 
+from . import validate
 from .alias import AliasGroup
 from .protocols import DataclassProtocol
 
@@ -13,16 +14,10 @@ def main():
     """Control groups in OBS scenes."""
 
 
-def _scene_in_scenes(ctx: typer.Context, scene_name: str) -> bool:
-    """Check if a scene exists in the list of scenes."""
-    resp = ctx.obj['obsws'].get_scene_list()
-    return any(scene.get('sceneName') == scene_name for scene in resp.scenes)
-
-
 @app.command('list | ls')
 def list(ctx: typer.Context, scene_name: str):
     """List groups in a scene."""
-    if not _scene_in_scenes(ctx, scene_name):
+    if not validate.scene_in_scenes(ctx, scene_name):
         typer.echo(
             f"Scene '{scene_name}' not found.",
             err=True,
@@ -52,7 +47,7 @@ def _get_group(group_name: str, resp: DataclassProtocol) -> dict | None:
 @app.command()
 def show(ctx: typer.Context, scene_name: str, group_name: str):
     """Show a group in a scene."""
-    if not _scene_in_scenes(ctx, scene_name):
+    if not validate.scene_in_scenes(ctx, scene_name):
         typer.echo(
             f"Scene '{scene_name}' not found.",
             err=True,
@@ -77,7 +72,7 @@ def show(ctx: typer.Context, scene_name: str, group_name: str):
 @app.command()
 def hide(ctx: typer.Context, scene_name: str, group_name: str):
     """Hide a group in a scene."""
-    if not _scene_in_scenes(ctx, scene_name):
+    if not validate.scene_in_scenes(ctx, scene_name):
         typer.echo(
             f"Scene '{scene_name}' not found.",
             err=True,
diff --git a/obsws_cli/input.py b/obsws_cli/input.py
index 68ae9b0..143a25e 100644
--- a/obsws_cli/input.py
+++ b/obsws_cli/input.py
@@ -4,6 +4,7 @@ from typing import Annotated
 
 import typer
 
+from . import validate
 from .alias import AliasGroup
 
 app = typer.Typer(cls=AliasGroup)
@@ -39,16 +40,10 @@ def list(
     typer.echo('\n'.join(input_.get('inputName') for input_ in inputs))
 
 
-def _input_in_inputs(ctx: typer.Context, input_name: str) -> bool:
-    """Check if an input is in the input list."""
-    inputs = ctx.obj['obsws'].get_input_list().inputs
-    return any(input_.get('inputName') == input_name for input_ in inputs)
-
-
 @app.command()
 def mute(ctx: typer.Context, input_name: str):
     """Mute an input."""
-    if not _input_in_inputs(ctx, input_name):
+    if not validate.input_in_inputs(ctx, input_name):
         typer.echo(
             f"Input '{input_name}' not found.",
             err=True,
@@ -64,7 +59,7 @@ def mute(ctx: typer.Context, input_name: str):
 @app.command()
 def unmute(ctx: typer.Context, input_name: str):
     """Unmute an input."""
-    if not _input_in_inputs(ctx, input_name):
+    if not validate.input_in_inputs(ctx, input_name):
         typer.echo(
             f"Input '{input_name}' not found.",
             err=True,
@@ -80,7 +75,7 @@ def unmute(ctx: typer.Context, input_name: str):
 @app.command('toggle | tg')
 def toggle(ctx: typer.Context, input_name: str):
     """Toggle an input."""
-    if not _input_in_inputs(ctx, input_name):
+    if not validate.input_in_inputs(ctx, input_name):
         typer.echo(
             f"Input '{input_name}' not found.",
             err=True,
diff --git a/obsws_cli/scene.py b/obsws_cli/scene.py
index b39046b..a5b469e 100644
--- a/obsws_cli/scene.py
+++ b/obsws_cli/scene.py
@@ -23,12 +23,6 @@ def list(ctx: typer.Context):
     typer.echo('\n'.join(scenes))
 
 
-def _studio_mode_enabled(ctx: typer.Context) -> bool:
-    """Check if studio mode is enabled."""
-    resp = ctx.obj['obsws'].get_studio_mode_enabled()
-    return resp.studio_mode_enabled
-
-
 @app.command('current | get')
 def current(
     ctx: typer.Context,
@@ -37,7 +31,7 @@ def current(
     ] = False,
 ):
     """Get the current program scene or preview scene."""
-    if preview and not _studio_mode_enabled(ctx):
+    if preview and not validate.studio_mode_enabled(ctx):
         typer.echo('Studio mode is not enabled, cannot get preview scene.')
         raise typer.Exit(1)
 
@@ -59,7 +53,7 @@ def switch(
     ] = False,
 ):
     """Switch to a scene."""
-    if preview and not _studio_mode_enabled(ctx):
+    if preview and not validate.studio_mode_enabled(ctx):
         typer.echo('Studio mode is not enabled, cannot set the preview scene.')
         raise typer.Exit(1)