Your inventory is public at the moment. Your friends can browse your inventory from the Inventory link on your profile page or from
this link: https://deckbox.org/sets/700284?s=i&o=d.
If you add cards from your inventory to your tradelist then your friends that use Deckbox will see the matches from their wishlist and your tradelist when visiting your profile. Note that when you go to complete a trade with cards that are in your inventory, but not on your tradelist, you will have to add those cards to your tradelist in order for either trader to be able to accept the trade.