Dmitri worked on enhancing score management capabilities in the MuseScore repository, focusing on the Plugin API. He partially restored and improved the readScore, closeScore, and writeScore functions, enabling more robust programmatic control over musical scores. Using C++ and leveraging his skills in API development and error handling, Dmitri introduced score validity checks and expanded format support, ensuring that the API could handle a wider range of scenarios reliably. His work also improved error feedback for API consumers, contributing to a more maintainable and user-friendly interface. The depth of his contributions addressed both functionality and reliability within the API layer.