Guardrails for AI media buying

Letting software change budgets is either reckless or the best decision you'll make this year, depending on the guardrails. We run every automated action through four: a hard ceiling per account, a maximum step size, a cooldown between steps, and an undo log with the evidence attached. This post explains each, shows a week of dry-run output from a real (anonymised) account, and argues that "explainable" matters more than "smart" when it's your money.