Iowa HF 2507 establishes requirements for operators of conversational AI services — defined as publicly accessible AI systems whose primary purpose is simulating human conversation. The bill imposes heightened obligations when users are minors, including mandatory AI identity disclosure via persistent or recurring disclaimers, prohibitions on addictive reward mechanisms, and reasonable measures to prevent sexually explicit content, emotional dependency simulations, and deceptive human-like interactions. For all users, operators must disclose AI identity when a reasonable person could be misled, adopt suicide and self-harm response protocols with crisis referrals, and refrain from representing the service as providing licensed psychology or behavioral health services. Enforcement is exclusively through the attorney general, with civil penalties up to $1,000 per violation and a $500,000 cap per operator. No private right of action is created.