SA_INIT_SCRIPT

What it does

The function you pass to SA_INIT_SCRIPT is cut out of your source and runs before the obfuscated part, unobfuscated. Use it to show a key input UI, or anything that must happen before the whitelist checks the key.

Rules

• Only one SA_INIT_SCRIPT per script.
• The argument must be an inline function — SA_INIT_SCRIPT(handler) fails obfuscation.
• No upvalues: the function runs in its own context, so keep every helper inside it.
• The code is readable by anyone — never put secrets there.
• If your UI is asynchronous, block at the end until a key is set. Otherwise the whitelist starts early and kicks with "No key found".

Example: key UI

SA_INIT_SCRIPT(function()
    local lib = loadstring(game:HttpGet("https://api.santiauth.com/api/loader/v4/library.lua"))()
    -- lib.service and lib.script_id are filled in for you inside SA_INIT_SCRIPT

    local gui = --[[ your ScreenGui with a TextBox and Submit / Get key buttons ]]

    gui.GetKey.Activated:Connect(function()
        setclipboard(lib.get_key_url()) -- https://santiauth.com/a/my-hub
    end)

    gui.Submit.Activated:Connect(function()
        local status = lib.check_key(gui.KeyBox.Text) -- never kicks
        gui.Status.Text = status.message
        -- on KEY_VALID the library sets getgenv().script_key for you
    end)

    repeat task.wait() until getgenv().script_key -- wait for a valid key
    gui:Destroy()
end)

-- Protected code below only runs after the built-in whitelist passes.
print("Welcome,", SA_LinkedDiscordID)

Inside SA_INIT_SCRIPT the library already knows your service slug and this script's ID — SantiAuth sets them when it builds the script. Set lib.service / lib.script_id yourself only to override them, or when you load the library from your own loader.