Replicate Dropbox Transfer Functionality VIA API

Dropbox does not currently offer API functionality for Dropbox Transfer, but I'll pass this along as a feature request. I can't promise if or when that might be implemented though.

A) The Dropbox API does offer the ability to programmatically create shared links with passwords, via the /2/sharing/create_shared_link_with_settings endpoint. Click on "SharedLinkSettings" in the /2/sharing/create_shared_link_with_settings API documentation to see all of the settings that are available. Note that some settings are only available to some account types though.

B) Unfortunately the Dropbox API does not offer a way to be notified if/when the files are accessed/downloaded from shared links, but I'll pass this along as a feature request as well; likewise, I can't promise if or when that might be implemented. (If you're on a team however, you can monitor activity using /2/team_log/get_events[/continue], though that may be noisy.)

C) The /2/sharing/create_shared_link_with_settings endpoint also supports an 'expires' setting for configuring the expiration of the shared link.