The correct security pattern is:
A common mistake is placing ServerScripts inside StarterGui objects. These scripts won't execute properly and can cause confusion. Always use LocalScripts for GUI-related code.
The item spawns twice. Check: Did you accidentally put the Server Script inside a Tool or a GUI? Move it to ServerScriptService . roblox fe gui script better
Place this script inside your buy button component. It manages visual behavior and sends a request to the server.
Let's build a "Buy Health Potion" button. We want low latency, server authority, and protection against spamming. The correct security pattern is: A common mistake
This script creates a new GUI with a single button that prints a message to the console when clicked.
local player = game.Players.LocalPlayer local remote = game.ReplicatedStorage:WaitForChild("PurchaseRemote") The item spawns twice
When you need to request data from the server and wait for a response, use RemoteFunctions. This is ideal for loading player stats, inventory data, or any information needed before displaying a GUI.
remote.OnServerEvent:Connect(function(player, requestedItem) -- VALIDATION LAYER (The "Better" part)
If your GUI moves too fast or clicks too fast, the server might think you are an auto-farmer. Add random delays. Use task.wait(math.random(0.05, 0.15)) instead of task.wait() .