Developed and delivered a core feature for the MichaelCade/mcp-go repository, enabling server sessions to persist client information throughout the session lifecycle. This work introduced a new Go interface, SessionWithClientInfo, and applied it across multiple session types to support consistent storage and retrieval of client details. The implementation focused on interface-driven design and backend development, allowing for enhanced auditing, improved personalization, and more reliable security decisions based on persistent client data. By establishing a foundation for policy-based access controls and user-centric workflows, this feature improved governance and observability within the system, demonstrating strong skills in Go and API design.