can't find "File Requests API"

Steven, are you saying there's no server-side component to this app? (You're distributing apps that get installed on people's computers?) If so, you're right that you shouldn't embed an access token in that app, just as you wouldn't want to embed S3 or FTP credentials in the app.

I was assuming some server-side component that accepts the file upload and sends it along to Dropbox. E.g., in Python:

DropboxClient("<access token for the account>").put_file('/path/to/shared_folder/' + filename, file_to_upload)

If there's no server-side component, I guess you were hoping to create the file request once by hand, and then embed the file request URL in the app. Is that right?