Webhooks and notifications are tools that allow developers to track events that occur between their apps and Salla stores, Webhooks can be created in the Apps using Salla CLI. More information on creating webhooks can be found here.
The developer can list the Apps created and get details about the app. This article gives complete information for listing and gives more information about the Apps.
The developer can test the App and view certain details, such as remote URL, local URL, and other app's attributes. More information is available here.