diff --git a/voicebot/bots/minimal.py b/voicebot/bots/minimal.py
index 68d9070..2401568 100644
--- a/voicebot/bots/minimal.py
+++ b/voicebot/bots/minimal.py
@@ -11,10 +11,14 @@ import time
 from av.audio.frame import AudioFrame
 from av import VideoFrame
 from aiortc import MediaStreamTrack
-from typing import Dict, Any, Optional, Tuple
+from typing import Dict, Optional, Tuple, Any
 from shared.logger import logger
 
 
+# Global registry to store active tracks by session
+_active_tracks: Dict[str, Dict[str, Any]] = {}
+
+
 class MediaClock:
     """Shared clock for media synchronization."""
 
@@ -47,13 +51,68 @@ class ConfigurableVideoTrack(MediaStreamTrack):
         self.frame_count = 0
         self._start_time = time.time()
 
-        # Mode-specific state
-        if self.mode == 'ball':
-            self.ball_x = self.width // 2
-            self.ball_y = self.height // 2
-            self.ball_dx = 2
-            self.ball_dy = 2
-            self.ball_radius = 20
+        # Initialize ball attributes (always, regardless of mode)
+        self.ball_x = self.width // 2
+        self.ball_y = self.height // 2
+        self.ball_dx = 2
+        self.ball_dy = 2
+        self.ball_radius = 20
+
+    def update_config(self, config_updates: Dict[str, Any]) -> bool:
+        """Update the video track configuration dynamically.
+
+        Args:
+            config_updates: Dictionary of configuration values to update
+
+        Returns:
+            bool: True if update was successful
+        """
+        try:
+            old_mode = self.mode
+            old_width = self.width
+            old_height = self.height
+
+            # Update configuration
+            self.config.update(config_updates)
+
+            # Update instance variables
+            if 'width' in config_updates:
+                self.width = config_updates['width']
+            if 'height' in config_updates:
+                self.height = config_updates['height']
+            if 'fps' in config_updates:
+                self.fps = config_updates['fps']
+            if 'visualization' in config_updates:
+                self.mode = config_updates['visualization']
+
+            # Reinitialize mode-specific state if mode changed
+            if self.mode != old_mode:
+                self._initialize_mode_state()
+                logger.info(f"Video mode changed from {old_mode} to {self.mode}")
+
+            # Reinitialize ball state if dimensions changed (for any mode, since ball is default)
+            if self.width != old_width or self.height != old_height:
+                self._initialize_ball_state()
+
+            logger.info(f"Video track configuration updated: {config_updates}")
+            return True
+
+        except Exception as e:
+            logger.error(f"Error updating video track configuration: {e}")
+            return False
+
+    def _initialize_mode_state(self):
+        """Initialize state specific to the current visualization mode."""
+        # Always initialize ball state since it's used as default
+        self._initialize_ball_state()
+
+    def _initialize_ball_state(self):
+        """Initialize bouncing ball state."""
+        self.ball_x = self.width // 2
+        self.ball_y = self.height // 2
+        self.ball_dx = 2
+        self.ball_dy = 2
+        self.ball_radius = min(self.width, self.height) * 0.06
 
     async def next_timestamp(self) -> Tuple[int, float]:
         pts = int(self.frame_count * (90000 / self.fps))
@@ -71,7 +130,8 @@ class ConfigurableVideoTrack(MediaStreamTrack):
         elif self.mode == 'static':
             frame_array = self._generate_static_frame()
         else:
-            frame_array = self._generate_ball_frame()  # default
+            # Default to ball mode if unknown mode
+            frame_array = self._generate_ball_frame()
 
         frame = VideoFrame.from_ndarray(frame_array, format="bgr24")  # type: ignore
         frame.pts = pts
@@ -144,7 +204,38 @@ class ConfigurableAudioTrack(MediaStreamTrack):
         self.mode = config.get('audio_mode', 'tone')
         self.frequency = config.get('frequency', 440.0)
         self.volume = config.get('volume', 0.5)
-        self._samples_generated = 0
+        self._samples_generated: int = 0
+    def update_config(self, config_updates: Dict[str, Any]) -> bool:
+        """Update the audio track configuration dynamically.
+
+        Args:
+            config_updates: Dictionary of configuration values to update
+
+        Returns:
+            bool: True if update was successful
+        """
+        try:
+            # Update configuration
+            self.config.update(config_updates)
+
+            # Update instance variables
+            if 'sample_rate' in config_updates:
+                self.sample_rate = config_updates['sample_rate']
+            if 'samples_per_frame' in config_updates:
+                self.samples_per_frame = config_updates['samples_per_frame']
+            if 'audio_mode' in config_updates:
+                self.mode = config_updates['audio_mode']
+            if 'frequency' in config_updates:
+                self.frequency = config_updates['frequency']
+            if 'volume' in config_updates:
+                self.volume = config_updates['volume']
+
+            logger.info(f"Audio track configuration updated: {config_updates}")
+            return True
+
+        except Exception as e:
+            logger.error(f"Error updating audio track configuration: {e}")
+            return False
 
     async def next_timestamp(self) -> Tuple[int, float]:
         pts = self._samples_generated
@@ -252,6 +343,9 @@ def create_minimal_bot_tracks(session_name: str, config: Optional[Dict[str, Any]
 
     logger.info(f"Created minimal bot tracks for {session_name} with config: {default_config}")
 
+    # Store tracks in global registry for dynamic updates
+    _active_tracks[session_name] = {"video": video_track, "audio": audio_track}
+
     return {"video": video_track, "audio": audio_track}
 
 
@@ -393,4 +487,85 @@ def get_config_schema() -> Dict[str, Any]:
                 "Advanced": ["static_color"]
             }
         ]
-    }
\ No newline at end of file
+    }
+
+
+def create_agent_tracks(session_name: str) -> Dict[str, MediaStreamTrack]:
+    """Factory wrapper used by the FastAPI service to instantiate tracks for an agent."""
+    return create_minimal_bot_tracks(session_name)
+
+
+def handle_config_update(lobby_id: str, config_values: Dict[str, Any]) -> bool:
+    """
+    Handle runtime configuration updates for the minimal bot.
+
+    Args:
+        lobby_id: ID of the lobby/bot instance
+        config_values: Dictionary of configuration values to update
+
+    Returns:
+        bool: True if update was successful, False otherwise
+    """
+    try:
+        # Validate configuration values
+        validated_config = {}
+
+        # Parse and validate static_color if provided
+        if 'static_color' in config_values:
+            color_value = config_values['static_color']
+            if isinstance(color_value, str):
+                try:
+                    r, g, b = map(int, color_value.split(','))  # type: ignore
+                    validated_config['static_color'] = (r, g, b)
+                except (ValueError, TypeError):
+                    logger.warning(f"Invalid static_color format: {color_value}, ignoring update")
+                    return False
+            elif isinstance(color_value, (tuple, list)) and len(color_value) == 3:  # type: ignore
+                validated_config['static_color'] = tuple(color_value)  # type: ignore
+            else:
+                logger.warning(f"Invalid static_color type: {type(color_value)}, ignoring update")  # type: ignore
+                return False
+
+        # Copy other valid configuration values
+        valid_keys = {'visualization', 'audio_mode', 'width', 'height', 'fps',
+                     'sample_rate', 'frequency', 'volume'}
+        for key in valid_keys:
+            if key in config_values:
+                validated_config[key] = config_values[key]
+
+        if validated_config:
+            logger.info(f"Configuration updated for {lobby_id}: {validated_config}")
+
+            # Update running tracks if they exist in the registry
+            if lobby_id in _active_tracks:
+                tracks = _active_tracks[lobby_id]
+                video_track = tracks.get("video")
+                audio_track = tracks.get("audio")
+
+                # Update video track configuration
+                if video_track and hasattr(video_track, 'update_config'):
+                    video_updated = video_track.update_config(validated_config)
+                    if video_updated:
+                        logger.info(f"Video track configuration updated for {lobby_id}")
+                    else:
+                        logger.warning(f"Failed to update video track configuration for {lobby_id}")
+
+                # Update audio track configuration
+                if audio_track and hasattr(audio_track, 'update_config'):
+                    audio_updated = audio_track.update_config(validated_config)
+                    if audio_updated:
+                        logger.info(f"Audio track configuration updated for {lobby_id}")
+                    else:
+                        logger.warning(f"Failed to update audio track configuration for {lobby_id}")
+
+                return True
+            else:
+                logger.warning(f"No active tracks found for session {lobby_id}")
+                return False
+        else:
+            logger.warning(f"No valid configuration values provided for {lobby_id}")
+            return False
+
+    except Exception as e:
+        logger.error(f"Error updating configuration for {lobby_id}: {e}")
+        return False
\ No newline at end of file
diff --git a/voicebot/webrtc_signaling.py b/voicebot/webrtc_signaling.py
index 6559cc1..f951305 100644
--- a/voicebot/webrtc_signaling.py
+++ b/voicebot/webrtc_signaling.py
@@ -473,7 +473,9 @@ class WebRTCSignalingClient:
         # Otherwise, use default synthetic tracks.
         try:
             if self.create_tracks:
-                tracks = self.create_tracks(self.session_name)
+                # Use lobby_id as the session identifier for track creation
+                # This ensures config updates can find the tracks using the same key
+                tracks = self.create_tracks(self.lobby_id)
                 self.local_tracks.update(tracks)
             else:
                 # Default fallback to synthetic tracks