Jackson Sun developed a new API endpoint for the Autodesk/hydra-viewport-toolbox repository, focusing on enabling dynamic material updates within the SceneDataSource component. Using C++ and leveraging his skills in API development and scene management, he implemented the updateMaterial endpoint as a stub that logs a runtime error, establishing a clear API contract and a safe extension point for future enhancements. This initial scaffold did not include the full update logic but laid the groundwork for runtime material property changes, improving the extensibility of the viewport toolbox and providing a traceable foundation for future material-driven workflows within the codebase.