Update tool.py

tool.py

@@ -8,14 +8,15 @@ class TextToImageTool(Tool):
     description = "This tool creates an image according to a prompt, which is a text description."
     name = "image_generator"
     inputs = {"prompt": {"type": "string", "description": "The image generator prompt. Don't hesitate to add details in the prompt to make the image look better, like 'high-res, photorealistic', etc."},
-             "save_path": {"type": "string", "description": "A file path in `/tmp` to save the image to. The file path extenstion should be .png"}
+             "save_path": {"type": "string", "description": "A file path in `/tmp` to save the image to. The file path extenstion should be .png"., "nullable": True}
              }
     output_type = "image"
     model_sdxl = "black-forest-labs/FLUX.1-schnell"
     client = InferenceClient(model_sdxl, token=os.environ["HUB_TOKEN"])
 
 
-    def forward(self, prompt, save_path="/tmp/generated_image.png"):
+    def forward(self, prompt, save_path=None):
         image = self.client.text_to_image(prompt)
-        image.save(save_path)
+        if save_path is not None:
+            image.save(save_path)
         return image