The era of the passive digital tool is ending. Software is becoming an active partner capable of autonomy, thanks to Agentic Artificial Intelligence (AI). This evolution presents User Experience (UX) professionals with new challenges and demands a fundamental change in UX design. UX must evolve from designing screens to choreographing relationships. Designing Agentic AI Experiences provides a practical framework for building AI partners that users trust. This book bridges the gap between psychological theory and interface practice. It empowers UX designers and researchers to lead the integration of AI into products that respect human dignity and build trust between user and system. Readers of this book will learn to:Design Trust: Use the Trust Battery model to measure and maintain user confidence over timeDefine Personality: Craft Agent Personas and Relationship Archetypes that align with user expectationsStructure Delegation: Implement the Ladder of Autonomy to guide users from simple suggestions to fully automated actionsEnsure Safety: Deploy Circuit Breakers and feedback loops that prevent errors and keep the human in controlScale Strategy: Establish an Agentic Center of Excellence to govern multi-agent ecosystems across the enterpriseThe technology is ready. The challenge is no longer building intelligence behind the interface but designing the partnership. This book shows you how.