How can I tunnel https callbacks from paypal to my local dev in a serverless way

I'm trying to develop against PayPal but I don't get any callbacks because I'm on my local dev computer. Stripe has a CLI that tunnels callbacks to your local env but PayPal does not. Is there an easy way to run a serverless tunnel e.g ngrok using an azure function or similar?

Using ngrok is indeed one way to achieve this and should be fairly straightforward. But if the free tier doesn't work for you, here is another way you can work with callbacks

• Use an Azure Event Grid Topic as the endpoint for your callbacks (configure this in PayPal)
• Setup a subscription to send events to a service bus queue / topic.
• Instead of a HTTP Triggered Function, use a Service Bus Triggered Function which will process messages in the queue