Developed and integrated a dynamic tool retrieval mechanism for the vllm-project/semantic-router repository, enabling the router to select external processing tools based on contextual queries rather than static configurations. This feature enhanced the semantic router’s ability to perform context-aware tool selection, reducing manual intervention and improving routing accuracy for external processing tasks. The implementation focused on backend development and API design, leveraging Go and Python to ensure maintainability and extensibility. Emphasis was placed on observability and testing, laying a foundation for future optimization and easier extension to additional tools within the external processing path, while maintaining disciplined code integration practices.