For when you intend to complete a requirement for a user programmatically.
Intended uses
When you are dealing with a requirement that can only be completed by your system, and not ChainVine's, some examples can include, but are not limited to:
a user interacts with a chain that ChainVine does not support
a user replies to a message on your app
a user signs up for an off-chain feature on your app
Before implementing this approach, be sure to have whitelisted your domain.