Meta has released its Muse AI agent, which is actively compiling detailed dossiers on users across platforms. The company has also open-sourced code enabling developers to build third-party Muse gadgets, accelerating ecosystem expansion. For healthcare AI implementations, this raises critical questions about data aggregation across vendor platforms and the privacy guardrails required when deploying agent-based systems in clinical environments. Healthcare organizations integrating AI agents into EHR workflows must now evaluate whether third-party agent ecosystems can meet HIPAA compliance requirements and audit standards. The velocity and breadth of Muse adoption signals that agent-based architectures are moving rapidly into production, making privacy-by-design and data governance non-negotiable for healthcare vendors and providers.