Webhooks are one of the more powerful ways to extend GitHub. They allow internal tools and third-party integrations to subscribe to specific activity on GitHub and receive notifications (via an HTTP POST) to an external web server when those events happen. They are often used to trigger CI builds, deploy applications, or update external bug trackers.
Based on your feedback, we’ve expanded the kinds of events to which you can subscribe. New events include:
When the action in question was an edit, the webhook’s payload will helpfully point out what changed.