Deliverr has a direct integration into GeekSeller, once connected, Walmart orders are passed from GeekSeller to Deliverr to fulfill. Inventory levels Inventory levels pass from Deliverr to GeekSeller, and then to Walmart.
How to set up Deliverr <> Geekseller:
Sign up with GeekSeller and Deliverr
The Geekseller Team will assist you with setting up and publishing your products on Walmart