A webhook always needs a receiving URL where the call will end. In a production system, this URL will be yours, but for testing purposes, you can use 3rd-party services like WebHook.Site
This service will give you a URL that you can put into your webhook registration, and then you can see calls from the webhook.
Be aware that this URL is one-time and will be destroyed as soon as you leave the site.
For testing calls, you can use the Test WebHook Registration call. With the ID of your webhook registration, you will receive a callback to your system (or to the testing site).
Updated about 2 months ago