diff --git a/src/vban_cli/app.py b/src/vban_cli/app.py
index ee5f93d..c437c23 100644
--- a/src/vban_cli/app.py
+++ b/src/vban_cli/app.py
@@ -58,7 +58,7 @@ def sendtext(
     text: Annotated[str, Argument()],
     /,
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Send a text command to the current Voicemeeter/Matrix instance."""
     if resp := ctx.client.sendtext(text):
diff --git a/src/vban_cli/bus.py b/src/vban_cli/bus.py
index 142b319..da9b0e6 100644
--- a/src/vban_cli/bus.py
+++ b/src/vban_cli/bus.py
@@ -13,19 +13,18 @@ app = App(name='bus', help_formatter=BusHelpFormatter())
 
 @app.meta.default
 def launcher(
-    index: Annotated[int, Argument()] = None,
+    index: Annotated[int, Argument()],
+    /,
     *tokens: Annotated[str, Parameter(show=False, allow_leading_hyphen=True)],
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Control the bus parameters."""
     additional_kwargs = {}
     command, bound, _ = app.parse_args(tokens)
     if tokens[0] == 'eq':
         additional_kwargs['eq_kind'] = app.name[0]
-    if index is not None:
-        additional_kwargs['index'] = index
-    if ctx is not None:
-        additional_kwargs['ctx'] = ctx
+    additional_kwargs['index'] = index
+    additional_kwargs['ctx'] = ctx
 
     return command(*bound.args, **bound.kwargs, **additional_kwargs)
 
@@ -36,8 +35,8 @@ def mono(
         Optional[Literal['off', 'mono', 'stereoreverse']], Argument()
     ] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the mono state of the specified bus.
 
@@ -56,8 +55,8 @@ def mono(
 def mute(
     new_value: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the mute state of the specified bus.
 
@@ -94,8 +93,8 @@ def mode(
         Argument(),
     ] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the bus mode of the specified bus.
 
diff --git a/src/vban_cli/command.py b/src/vban_cli/command.py
index 34a0fb3..888be79 100644
--- a/src/vban_cli/command.py
+++ b/src/vban_cli/command.py
@@ -12,7 +12,7 @@ app = App(name='command', help_formatter=BaseHelpFormatter())
 @app.command(name='show')
 def show(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)] = None,
 ):
     """Bring the Voicemeeter GUI to the foreground."""
     ctx.client.command.show()
@@ -22,7 +22,7 @@ def show(
 @app.command(name='hide')
 def hide(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Send the Voicemeeter GUI to the background."""
     ctx.client.command.hide()
@@ -32,7 +32,7 @@ def hide(
 @app.command(name='shutdown')
 def shutdown(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Shut down Voicemeeter."""
     ctx.client.command.shutdown()
@@ -42,7 +42,7 @@ def shutdown(
 @app.command(name='restart')
 def restart(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Restart the Voicemeeter engine."""
     ctx.client.command.restart()
diff --git a/src/vban_cli/comp.py b/src/vban_cli/comp.py
index bf012fb..ce3b295 100644
--- a/src/vban_cli/comp.py
+++ b/src/vban_cli/comp.py
@@ -11,16 +11,14 @@ app = App(name='comp', help_formatter=StripHelpFormatter())
 @app.meta.default
 def launcher(
     *tokens: Annotated[str, Parameter(show=False, allow_leading_hyphen=True)],
-    index: Annotated[int, Argument()] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Control the compressor parameters."""
     additional_kwargs = {}
     command, bound, _ = app.parse_args(tokens)
-    if index is not None:
-        additional_kwargs['index'] = index
-    if ctx is not None:
-        additional_kwargs['ctx'] = ctx
+    additional_kwargs['index'] = index
+    additional_kwargs['ctx'] = ctx
 
     return command(*bound.args, **bound.kwargs, **additional_kwargs)
 
@@ -29,8 +27,8 @@ def launcher(
 def knob(
     new_knob: Annotated[float, Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the knob of the specified compressor.
 
@@ -50,8 +48,8 @@ def knob(
 def input_gain(
     new_gain: Annotated[float, Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the input gain of the specified compressor.
 
diff --git a/src/vban_cli/denoiser.py b/src/vban_cli/denoiser.py
index cc290b0..7b2b918 100644
--- a/src/vban_cli/denoiser.py
+++ b/src/vban_cli/denoiser.py
@@ -11,16 +11,14 @@ app = App(name='denoiser', help_formatter=StripHelpFormatter())
 @app.meta.default
 def launcher(
     *tokens: Annotated[str, Parameter(show=False, allow_leading_hyphen=True)],
-    index: Annotated[int, Argument()] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Control the denoiser parameters."""
     additional_kwargs = {}
     command, bound, _ = app.parse_args(tokens)
-    if index is not None:
-        additional_kwargs['index'] = index
-    if ctx is not None:
-        additional_kwargs['ctx'] = ctx
+    additional_kwargs['index'] = index
+    additional_kwargs['ctx'] = ctx
 
     return command(*bound.args, **bound.kwargs, **additional_kwargs)
 
@@ -29,8 +27,8 @@ def launcher(
 def knob(
     new_knob: Annotated[float, Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the knob of the specified denoiser.
 
diff --git a/src/vban_cli/eq.py b/src/vban_cli/eq.py
index eb99760..389b581 100644
--- a/src/vban_cli/eq.py
+++ b/src/vban_cli/eq.py
@@ -14,9 +14,9 @@ app.command(cell_app.meta, name='cell')
 @app.meta.default
 def launcher(
     *tokens: Annotated[str, Parameter(show=False, allow_leading_hyphen=True)],
-    eq_kind: Annotated[str, Parameter(show=False)] = None,
-    index: Annotated[int, Argument()] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    eq_kind: Annotated[str, Parameter(parse=False)],
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Control the EQ parameters."""
     additional_kwargs = {}
@@ -37,7 +37,7 @@ def launcher(
 def on(
     new_state: Annotated[bool, Argument()] = None,
     *,
-    target: Annotated[object, Parameter(show=False)] = None,
+    target: Annotated[object, Parameter(parse=False)],
 ):
     """Get or set the on state of the specified EQ band.
 
@@ -55,9 +55,10 @@ def on(
 
 @cell_app.meta.default
 def cell_launcher(
-    band: Annotated[int, Argument()] = None,
+    band: Annotated[int, Argument()],
+    /,
     *tokens: Annotated[str, Parameter(show=False, allow_leading_hyphen=True)],
-    target: Annotated[object, Parameter(show=False)] = None,
+    target: Annotated[object, Parameter(parse=False)],
 ):
     """Control the EQ Cell parameters.
 
@@ -74,7 +75,7 @@ def cell_launcher(
 def cell_on(
     new_state: Annotated[bool, Argument()] = None,
     *,
-    target: Annotated[object, Parameter(show=False)] = None,
+    target: Annotated[object, Parameter(parse=False)],
 ):
     """Get or set the on state of the specified EQ cell.
 
@@ -94,7 +95,7 @@ def cell_on(
 def cell_freq(
     new_freq: Annotated[float, Argument()] = None,
     *,
-    target: Annotated[object, Parameter(show=False)] = None,
+    target: Annotated[object, Parameter(parse=False)],
 ):
     """Get or set the frequency of the specified EQ cell.
 
@@ -114,7 +115,7 @@ def cell_freq(
 def cell_gain(
     new_gain: Annotated[float, Argument()] = None,
     *,
-    target: Annotated[object, Parameter(show=False)] = None,
+    target: Annotated[object, Parameter(parse=False)],
 ):
     """Get or set the gain of the specified EQ cell.
 
@@ -134,7 +135,7 @@ def cell_gain(
 def cell_q(
     new_q: Annotated[float, Argument()] = None,
     *,
-    target: Annotated[object, Parameter(show=False)] = None,
+    target: Annotated[object, Parameter(parse=False)],
 ):
     """Get or set the Q of the specified EQ cell.
 
@@ -154,7 +155,7 @@ def cell_q(
 def cell_type(
     new_type: Annotated[int, Argument()] = None,
     *,
-    target: Annotated[object, Parameter(show=False)] = None,
+    target: Annotated[object, Parameter(parse=False)],
 ):
     """Get or set the type of the specified EQ cell.
 
diff --git a/src/vban_cli/gainlayer.py b/src/vban_cli/gainlayer.py
index e425b22..3830080 100644
--- a/src/vban_cli/gainlayer.py
+++ b/src/vban_cli/gainlayer.py
@@ -11,21 +11,18 @@ app = App(name='gainlayer', help_formatter=GainlayerHelpFormatter())
 
 @app.meta.default
 def launcher(
-    gainlayer_index: Annotated[int, Argument()] = None,
+    gainlayer_index: Annotated[int, Argument()],
+    /,
     *tokens: Annotated[str, Parameter(show=False, allow_leading_hyphen=True)],
-    index: Annotated[int, Argument()] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Control the gainlayers."""
     additional_kwargs = {}
     command, bound, _ = app.parse_args(tokens)
-    if index is not None and gainlayer_index is not None:
-        additional_kwargs['strip_index'] = index
-        additional_kwargs['gainlayer_index'] = gainlayer_index
-    else:
-        raise ValueError('Both gainlayer_index and index must be provided.')
-    if ctx is not None:
-        additional_kwargs['ctx'] = ctx
+    additional_kwargs['strip_index'] = index
+    additional_kwargs['gainlayer_index'] = gainlayer_index
+    additional_kwargs['ctx'] = ctx
 
     return command(*bound.args, **bound.kwargs, **additional_kwargs)
 
@@ -34,9 +31,9 @@ def launcher(
 def level(
     new_level: Annotated[float, Argument()] = None,
     *,
-    strip_index: Annotated[int, Parameter(show=False)] = None,
-    gainlayer_index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    strip_index: Annotated[int, Parameter(parse=False)],
+    gainlayer_index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the level of the specified gainlayer.
 
diff --git a/src/vban_cli/gate.py b/src/vban_cli/gate.py
index ede7238..fbea466 100644
--- a/src/vban_cli/gate.py
+++ b/src/vban_cli/gate.py
@@ -11,16 +11,14 @@ app = App(name='gate', help_formatter=StripHelpFormatter())
 @app.meta.default
 def launcher(
     *tokens: Annotated[str, Parameter(show=False, allow_leading_hyphen=True)],
-    index: Annotated[int, Argument()] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Control the compressor parameters."""
     additional_kwargs = {}
     command, bound, _ = app.parse_args(tokens)
-    if index is not None:
-        additional_kwargs['index'] = index
-    if ctx is not None:
-        additional_kwargs['ctx'] = ctx
+    additional_kwargs['index'] = index
+    additional_kwargs['ctx'] = ctx
 
     return command(*bound.args, **bound.kwargs, **additional_kwargs)
 
@@ -29,8 +27,8 @@ def launcher(
 def knob(
     new_knob: Annotated[float, Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the knob of the specified gate.
 
@@ -50,8 +48,8 @@ def knob(
 def threshold(
     new_threshold: Annotated[float, Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the threshold of the specified gate.
 
diff --git a/src/vban_cli/recorder.py b/src/vban_cli/recorder.py
index d7f3d17..1cfb744 100644
--- a/src/vban_cli/recorder.py
+++ b/src/vban_cli/recorder.py
@@ -13,7 +13,7 @@ app = App(name='recorder', help_formatter=BaseHelpFormatter())
 @app.command(name='play')
 def play(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Start the recorder playback."""
     ctx.client.recorder.play()
@@ -23,7 +23,7 @@ def play(
 @app.command(name='pause')
 def pause(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Pause the recorder playback."""
     ctx.client.recorder.stop()
@@ -33,7 +33,7 @@ def pause(
 @app.command(name='stop')
 def stop(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Stop the recorder playback/recording and reset to the beginning."""
     ctx.client.recorder.stop()
@@ -46,7 +46,7 @@ def stop(
 @app.command(name='replay')
 def replay(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Replay the recorder playback."""
     ctx.client.recorder.replay()
@@ -56,7 +56,7 @@ def replay(
 @app.command(name='record')
 def record(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Start recording."""
     ctx.client.recorder.record()
@@ -66,7 +66,7 @@ def record(
 @app.command(name='pause-recording')
 def pause_recording(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Pause the recorder recording."""
     ctx.client.recorder.pause()
@@ -76,7 +76,7 @@ def pause_recording(
 @app.command(name='ff')
 def ff(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Fast forward the recorder playback."""
     ctx.client.recorder.ff()
@@ -86,7 +86,7 @@ def ff(
 @app.command(name='rew')
 def rew(
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Rewind the recorder playback."""
     ctx.client.recorder.rew()
@@ -104,7 +104,7 @@ def load(
     ],
     /,
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Load a file into the recorder.
 
@@ -124,7 +124,7 @@ def goto(
     ],
     /,
     *,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Go to a specific timestamp in the recorder playback."""
     ctx.client.recorder.goto(time_string)
diff --git a/src/vban_cli/strip.py b/src/vban_cli/strip.py
index 70cd0a7..d476ae5 100644
--- a/src/vban_cli/strip.py
+++ b/src/vban_cli/strip.py
@@ -16,19 +16,18 @@ app.command(gainlayer.app.meta, name='gainlayer')
 
 @app.meta.default
 def launcher(
-    index: Annotated[int, Argument()] = None,
+    index: Annotated[int, Argument()],
+    /,
     *tokens: Annotated[str, Parameter(show=False, allow_leading_hyphen=True)],
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Control the strip parameters."""
     additional_kwargs = {}
     command, bound, _ = app.parse_args(tokens)
     if tokens[0] == 'eq':
         additional_kwargs['eq_kind'] = app.name[0]
-    if index is not None:
-        additional_kwargs['index'] = index
-    if ctx is not None:
-        additional_kwargs['ctx'] = ctx
+    additional_kwargs['index'] = index
+    additional_kwargs['ctx'] = ctx
 
     return command(*bound.args, **bound.kwargs, **additional_kwargs)
 
@@ -37,8 +36,8 @@ def launcher(
 def mono(
     new_state: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the mono state of the specified strip.
 
@@ -57,8 +56,8 @@ def mono(
 def solo(
     new_state: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the solo state of the specified strip.
 
@@ -77,8 +76,8 @@ def solo(
 def mute(
     new_state: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the mute state of the specified strip.
 
@@ -97,8 +96,8 @@ def mute(
 def gain(
     new_value: Annotated[Optional[float], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the gain of the specified strip.
 
@@ -117,8 +116,8 @@ def gain(
 def a1(
     new_value: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the A1 state of the specified strip.
 
@@ -137,8 +136,8 @@ def a1(
 def a2(
     new_value: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the A2 state of the specified strip.
 
@@ -157,8 +156,8 @@ def a2(
 def a3(
     new_value: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the A3 state of the specified strip.
 
@@ -177,8 +176,8 @@ def a3(
 def a4(
     new_value: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the A4 state of the specified strip.
 
@@ -197,8 +196,8 @@ def a4(
 def a5(
     new_value: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the A5 state of the specified strip.
 
@@ -217,8 +216,8 @@ def a5(
 def b1(
     new_value: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the B1 state of the specified strip.
 
@@ -237,8 +236,8 @@ def b1(
 def b2(
     new_value: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the B2 state of the specified strip.
 
@@ -257,8 +256,8 @@ def b2(
 def b3(
     new_value: Annotated[Optional[bool], Argument()] = None,
     *,
-    index: Annotated[int, Parameter(show=False)] = None,
-    ctx: Annotated[Context, Parameter(show=False)] = None,
+    index: Annotated[int, Parameter(parse=False)],
+    ctx: Annotated[Context, Parameter(parse=False)],
 ):
     """Get or set the B3 state of the specified strip.