diff --git a/config/settings.py b/config/settings.py
index debd2a4..e83ecae 100644
--- a/config/settings.py
+++ b/config/settings.py
@@ -49,12 +49,20 @@ class Settings(BaseSettings):
         default=2, description="Maximum number of models to keep loaded"
     )
 
-    # API Authentication
+    # API Configuration
+    api_enabled: bool = Field(default=True, description="Enable REST API")
     api_key: Optional[str] = Field(default=None, description="API key for authentication")
+    api_key_required: bool = Field(default=False, description="Require API key for requests")
+    api_rate_limit: int = Field(default=10, description="API rate limit per minute")
     cors_origins: list[str] = Field(
         default=["*"], description="Allowed CORS origins"
     )
 
+    # Audio Output
+    default_format: str = Field(default="wav", description="Default audio format (wav, mp3, flac)")
+    sample_rate: int = Field(default=32000, description="Output sample rate")
+    normalize_audio: bool = Field(default=True, description="Normalize audio output")
+
     # Generation Defaults
     default_duration: float = Field(default=10.0, description="Default generation duration")
     max_duration: float = Field(default=300.0, description="Maximum generation duration")
@@ -70,6 +78,10 @@ class Settings(BaseSettings):
 
     # Logging
     log_level: str = Field(default="INFO", description="Logging level")
+    debug: bool = Field(default=False, description="Enable debug mode")
+
+    # Model Management
+    max_loaded_models: int = Field(default=2, description="Maximum models loaded simultaneously")
 
     def ensure_directories(self) -> None:
         """Create required directories if they don't exist."""