diff --git a/inventoryWebBridge.lua b/inventoryWebBridge.lua
index 2c34a11..cbb3919 100644
--- a/inventoryWebBridge.lua
+++ b/inventoryWebBridge.lua
@@ -196,17 +196,27 @@ local function stateForwarder()
 end
 
 -- Task 3: Poll web server for commands
+local lastProcessedId = 0  -- track highest processed command ID for dedup
+
 local function commandPoller()
     while running do
         local ok, err = pcall(function()
             local result = httpGet("/api/bridge/commands")
             if result and result.commands and #result.commands > 0 then
-                -- Process each command
+                local maxId = lastProcessedId
+                -- Process each command, skipping already-processed ones
                 for _, cmd in ipairs(result.commands) do
-                    pcall(processCommand, cmd)
+                    local cmdId = cmd.id or 0
+                    if cmdId > lastProcessedId then
+                        pcall(processCommand, cmd)
+                        if cmdId > maxId then maxId = cmdId end
+                    end
+                end
+                -- Acknowledge up to the highest processed ID
+                if maxId > lastProcessedId then
+                    lastProcessedId = maxId
+                    httpPost("/api/bridge/commands/ack", { lastProcessedId = lastProcessedId })
                 end
-                -- Acknowledge
-                httpPost("/api/bridge/commands/ack", {})
             end
         end)
         sleep(POLL_INTERVAL)