For the Caper Cream Cheese: In a bowl, combine the 4 oz softened cream cheese, 2 Tbsp chopped capers, and 1 Tbsp chopped fresh chives. Mix until the mixture is creamy and well combined.
To Assemble: On a fresh bagel, spread a generous amount of your prepared caper cream cheese. Arrange thinly sliced cucumber and smoked salmon on top. Cut the bagel in half and enjoy immediately!