Complete guide to creating and configuring a Dropbox OAuth application
https://api.klavis.ai/oauth/dropbox/callback
account_info.read files.metadata.read files.metadata.write files.content.read files.content.write file_requests.read file_requests.write sharing.read sharing.write contacts.read contacts.write
https://api.klavis.ai/oauth/dropbox/callback
or your custom callback URL