I'm in Make's Technology Partner team and can advise here. You haven't said, but I'm guessing you're using the Make scenario as a Tool in Vapi. There's a new easier way to do that (more later) but I'm guessing you're doing it the old way, using the

Custom webhook

and

Webhook response

modules in Make. Can you post screenshots of your Make scenario, including a view of the Webhook response module parameters in detail? The new, much easier way of building Tools in Make for Vapi uses the new

Watch Tool Call Request

and

Respond to a Tool Call

modules - details [here](https://www.make.com/en/blog/make-vapi-powerful-combination-for-conversational-ai).