diff --git a/functions.lua b/functions.lua
index a3b1619..1dc7ca0 100644
--- a/functions.lua
+++ b/functions.lua
@@ -148,3 +148,45 @@ function emeraldbank.transfer_emeralds(player1, player2, num)
         core.chat_send_player(name1, S("Invalid pay"))
     end
 end
+
+
+
+-- Shops API
+
+function emeraldbank.inv_emeralds_to_stonks(pos)
+	local meta = core.get_meta(pos)
+	local inv = meta:get_inventory()
+	local stonks = meta:get_int("stonks")
+	local fancy_inv = inv:get_list("main")
+	if not fancy_inv then return end
+	local has_emerald = inv:contains_item("main", "mcl_core:emerald 1", true)
+	if has_emerald then
+		meta:set_int("stonks", stonks+1)
+		inv:remove_item("main", "mcl_core:emerald 1")
+		emeraldbank.inv_emeralds_to_stonks(pos)
+		return true
+	else
+		return false
+	end
+end
+
+function emeraldbank.get_stonks(pos)
+	local meta = core.get_meta(pos)
+	local owner = meta:get_string("owner")
+	local player = core.get_player_by_name(owner)
+	local is_online = core.player_exists(owner)
+	emeraldbank.inv_emeralds_to_stonks(pos)
+	local stonks = meta:get_int("stonks")
+	if not player or player.is_fake_player then return end
+	if is_online and stonks > 0 then
+		core.sound_play("cash", {
+			to_player = owner,
+			gain = 1.0,
+			fade = 0.0,
+			pitch = 1.0,
+		})
+		emeraldbank.add_emeralds(player, stonks)
+		meta:set_int("stonks", 0)
+		core.chat_send_player(owner, S("You've earned @1 Emeralds with your shops.", stonks))
+	end
+end