At the time of writing this, Signal does not offer a public API for users. It only provides application links to
quickly access already existing chats. Until Signal provides a public API, the Add Chat
commands will serve for adding the chats to the extension so users can access them from the Open Chat
command.
When the API is available, the Add Chat
and Import Contacts
commands will be obsolete while
new commands such as Send Message
will become feasible.