Subscription topics

Is there a list of topics that can be used when creating notification subscriptions for endpoints?

In short, no. There are a few examples in the Notification API Guide, but given the number of different applications and platforms connected through CloudLink, it can be difficult to keep a record. The best way is to start with a broad filter, carry out the desired action, and see what the resulting notifications look like. You can then filter down further from there with your subscription.