During October 2025, Ymx developed a Secure Sandbox Execution Environment for the eosphoros-ai/DB-GPT repository, focusing on enabling isolated, multi-language code execution for the DB-GPT Agent. Leveraging Python, Docker, and asynchronous programming, Ymx designed the system to support execution in Docker, Podman, or local processes, thereby enhancing security and reliability for plugin operations. The implementation established clear integration patterns for plugin developers and demonstrated cross-language execution capabilities, addressing the need for safer and more flexible plugin experimentation. This work laid a robust foundation for secure plugin interoperability and broader production deployment, reflecting thoughtful backend engineering within a short timeframe.