nats-tui is an interactive front-end to nats(1), the NATS command-line
tool. It shows the server a nats context points at as a tree: the
JetStream streams with their consumers, the key-value buckets, the object
stores and the micro services answering discovery, each opening in a
dialog editor for its configuration. Messages are published, requested
and watched live from the same screens.

Nothing is written except through nats itself. Every change is first
diffed into a plan of the exact nats commands it needs, shown with the
same quoting a shell would need, confirmed, and only then run, followed
by a re-read of the server.