Developed and integrated a sandbox mode for the LiveAvatar plugin in the livekit/agents repository, enabling isolated testing and development workflows without impacting production environments. The implementation introduced an is_sandbox parameter within both the API and avatar session classes, allowing developers to toggle sandbox functionality as needed. This approach supported safer and more efficient iteration on plugin features by providing a clear separation between test and live sessions. The work focused on backend development using Python and API design principles, enhancing collaboration and quality assurance by establishing a reliable boundary for experimentation and validation of new features within the LiveAvatar system.