Update app.py

app.py

@@ -35,6 +35,28 @@ def get_current_time_in_timezone(timezone: str) -> str:
 
 @tool
 def image_generation_tool():
+    """Construct a pure image generation Tool derivation.
+    
+    Returns a Tool instance configured for the FLUX.1-schnell image generation model,
+    maintaining referential transparency through immutable configuration.
+    The resulting Tool acts as a pure function from prompts to images.
+    
+    Tool Configuration:
+        space: "black-forest-labs/FLUX.1-schnell"
+        name: "image_generator" 
+        description: "Generate an image from a prompt"
+    
+    Returns:
+        Tool: An immutable Tool instance that maps text prompts to generated images.
+            The returned Tool maintains purity by producing deterministic outputs
+            for given inputs within the constraints of the underlying model.
+    
+    Note:
+        While the Tool construction is pure, the actual image generation may involve
+        non-deterministic elements from the underlying model. The function itself
+        remains referentially transparent as it consistently returns the same Tool
+        configuration.
+    """
     return Tool.from_space(
         "black-forest-labs/FLUX.1-schnell",
         name="image_generator",