Upload tool

tool.py

@@ -4,7 +4,7 @@ from typing import Optional
 class SimpleTool(Tool):
     name = "get_travel_duration"
     description = "Gets the travel time in car between two places."
-    inputs = {"start_location":{"type":"string","description":"the place from which you start your ride"},"destination_location":{"type":"string","description":"the place of arrival"},"departure_time":{"type":"integer","nullable":true,"description":"the departure time, provide only a `datetime.datetime` if you want to specify this"}}
+    inputs = {"start_location":{"type":"string","description":"the place from which you start your ride"},"destination_location":{"type":"string","description":"the place of arrival"},"departure_time":{"type":"integer","nullable":True,"description":"the departure time, provide only a `datetime.datetime` if you want to specify this"}}
     output_type = "string"
 
     def forward(self, start_location: str, destination_location: str, departure_time: Optional[int] = None) -> str: