Export Dropbox-Content to WordPress with list_folder

Yes — using the Dropbox API’s list_folder endpoint to enumerate a large folder and then feeding those file URLs into a bulk importer like WP All Import is a valid and achievable approach. The Dropbox API supports recursive listing and allows you to retrieve all image metadata via list_folder and list_folder/continue before you generate URLs for import. If existing plugins don’t meet your specific needs for automatically populating the WordPress Media Library with full-size images, building a custom integration around this API pattern is a reasonable solution many developers use for similar media ingestion tasks. 

Thanks Greg,
we'll look into this.

HuS If existing solutions don't address your use case, you can certainly build your own integration. To get the original/full size image data, you could use /2/files/download.

Thank you, kylea!
I wasn't notified that my question got an answer, hence my late reply. I am aware of these WordPress plugins – they, however don't do what we need. The WordPress plugins in this list which make Dropbox available in the Media Library context let you browse Dropbox from within WordPress as an additional image source. 

We want to automatically (and exclusively) populate our WordPress Media Library with assets stored on Dropbox, so that every published image originally comes from Dropbox. Thumbnails weren't  enough, we need the full-size images. Dropbox would work as a minimal DAM, connected to the WordPress Media Library.

Getting Dropbox files into Wordpress is certainly achievable with the API - there are several community built plugins to Wordpress that allow selection of Dropbox files, see here.  

If your goal is to get thumbnails of media files from Dropbox into WordPress, using get_thumbnail_batch using the output of list_folder may be the most efficient way to download the images.