You might want to take a look at using Make instead of Zapier. We've made a bunch of updates to the Vapi app in Make so that Tool building is now WAY easier. Take a look at [my recent blog post](https://www.make.com/en/blog/make-vapi-powerful-combination-for-conversational-ai) for more details. PS - extra bonus is that Make almost always works out more cost effective than Zapier