Update tools/detect_elements.py

tools/detect_elements.py

@@ -8,7 +8,7 @@ class DetectElementsTool(Tool):
     name = "detect_elements"
     description = "Detects table-like structures or text boxes in a screenshot using OpenCV."
     inputs = {
-        "screenshot_path": {"type": "string", "nullable": False, "description": "Path to the screenshot"},
+        "screenshot_path": {"type": "string", "nullable": True, "description": "Path to the screenshot"},
         "element_type": {"type": "string", "default": "table", "nullable": False, "description": "Type: 'table' or 'textbox'"}
     }
     output_type = "string"