Worked on the ytsaurus/ytsaurus repository to enhance the compatibility-info tool, focusing on usability and startup robustness. Developed a feature allowing the tool to operate without a configuration file, supporting both plain text and YSON output formats to accommodate different user needs. Refactored the startup flow by moving flag handling into the TProgram component, ensuring the process exits cleanly before attempting config loading, which improved reliability and reduced operational friction. Leveraged C++ for command line interface development, error handling, and system programming, with careful attention to backward compatibility and automation readiness. Documented changes and contributed to the project’s changelog.