This may include chats, projects, and any future structures. So the format should be extensible and backward-compatible, and documented.

For example, you allow importing ChatGPT chats, why not your own?

Several use cases:

* User's right to have their data available, even if no longer using the service.

* If Merlin gets bigger, interop is a value-add.

* A user may want to create a new Merlin account for business use or some other, and migrate their data across.