Developed and delivered role-based access control (RBAC) validation for service access within namespaces in the opendatahub-io/model-registry repository. Focused on secure-by-default access, the work enabled both global listing of services and targeted access to specific service names, integrating tightly with Kubernetes authorization to enforce organizational policies. Leveraged Go for backend and API development, ensuring namespace-scoped access controls that reduce the risk of unauthorized exposure and support compliance requirements. No major bugs were reported during this period, reflecting a focus on robust, auditable security features. The implementation enhanced the security posture of the system while maintaining flexibility for service management.