I would like to see the capability of simulating webhook payloads within an active notebook session in order to customize the delivery of the contents to users.
We currently use a notebook webhook to watch a feature service for adds/updates/deletes and then translate that information into an html-formatted email to notify the recipients of all change details. In order to get to that point, we had to follow the breadcrumbs throughout the process, capture the json URLs, parse through them, and make additional calls to then retrieve the information we were looking to provide.
Although we were able to accomplish our task, it would be nice to simulate this by triggering the webhook and then have the notebook server add the payload to the top cells, and finish by saving the notebook in that current state.