I am working on a marketplace site which have multiple sellers. While implementing paypal integration, seller grant their permissions to third party which includes the scope of express checkout. I have implemented this successfully
Though one of the following post I come to know that it is possible through NVP/SOAP API, but it is deprecated.
LINK: Rails with Paypal Permissions and Paypal Express Checkout
Is there any way available for it or need to integrate this only?