Agent mode means: A state of hyper-focused, autonomous hustle where someone is fully locked in, making moves independently and executing on a plan without needing direction or validation. Originally borrowed from AI. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.