Is it possible (and if so, how) to automatically approve Access Requests

Question

SharePoint 2013 (we are using SP 2013 On-Prem.) provides the ability for users to "request" access to a site, or for Site Members to "share" content with users outside of the current site users.  In both cases, however, the request
for access/sharing is added to the hidden list Access Requests, and a notification sent to the Site Collection Owner/Administrator, who must then "approve" the request before access is actually granted to the outside user.
We have a use case where we would like to have any access requests (specifically those initiated by Member users to share content with non-site users) automatically approved.  We still want the Access Request list to track all the requests, but we want
to somehow set all requests to Approved as soon as they come in, so that the Site Owners/Admins do not become a bottleneck where it takes time for access to be granted.
Is there any way to accomplish this without the need for custom code? 
I tried leveraging a SPD-based workflow, but there are not properties on Access Request that seem to represent the Approved/Declined selections available in the Request user interface, so there does not appear to be a way (at least via workflows) to set
a request  to approved.
Any ideas/thoughts on how to maybe accomplish this? 

Answer 1

Don't think there is a way to do this OOB.
--Cheers