diff --git a/UI/QuestItemBarClassicAPI.lua b/UI/QuestItemBarClassicAPI.lua
new file mode 100644
index 0000000..8648be5
--- /dev/null
+++ b/UI/QuestItemBarClassicAPI.lua
@@ -0,0 +1,37 @@
+-- Guda ClassicAPI Quest Item Bar fast path
+-- Keeps the upstream UI/flyout logic but reuses BagScanner item data so the
+-- quest detector does not perform a second container scan for each item.
+
+local addon = Guda
+local QuestItemBar = addon.Modules.QuestItemBar
+if not QuestItemBar then return end
+
+function QuestItemBar:CheckQuestItemUsable(bagID, slotID)
+    if not bagID or not slotID then return false, false, false end
+
+    local itemData = nil
+    if addon.Modules.BagScanner and addon.Modules.BagScanner.GetBagData then
+        local bagData = addon.Modules.BagScanner:GetBagData()
+        local bag = bagData and bagData[bagID]
+        itemData = bag and bag.slots and bag.slots[slotID]
+    end
+
+    if addon.Modules.ItemDetection and itemData then
+        local props = addon.Modules.ItemDetection:GetItemProperties(itemData, bagID, slotID)
+        if props then
+            return props.isQuestItem, props.isQuestStarter, props.isQuestUsable
+        end
+    end
+
+    -- Preserve the upstream fallback if the slot is not represented in the
+    -- shared snapshot for any reason.
+    if addon.Modules.Utils and addon.Modules.Utils.IsQuestItem then
+        local isQuestItem, isQuestStarter =
+            addon.Modules.Utils:IsQuestItem(bagID, slotID, itemData and itemData.link, false, false)
+        return isQuestItem, isQuestStarter, isQuestItem
+    end
+
+    return false, false, false
+end
+
+addon:Debug("QuestItemBar ClassicAPI snapshot detector loaded")