CustomWebhook block type not found on Automation action about prefect HOT 2 OPEN

@robfreedy at the moment only known system block types (like Webhook) can be used in Automation actions.

We don't have any way to instantiate CustomWebhookNotificationBlock server side, only metadata about the block definition.

Happy to chat through a feature request if you think there's value.

Seems like at minimum we could explain the above in our Automations action error message.

from prefect.

Gotcha, that makes sense. I could see this experience being confusing based on what is exposed in the Cloud UI just because there could be any number of custom blocks with the "notify" tag on them when setting the block for the "Send a Notifaction" action that would not be valid since there is no way to instantiate the CustomWebhookNotificationBlock or any custom block type.

I would maybe propose we either:

• Have a set list of "notification" block types that can be set on the Automation Action for sending a notification.
• Support any block type (including custom block types) in the automation action (larger feature request/discussion)

cc: @masonmenges

from prefect.