Developed pickle support for the PDBTool class in the microsoft/debug-gym repository, enabling robust serialization and persistence of tool state using Python. Applied object-oriented programming principles to implement custom __getstate__ and __setstate__ methods, ensuring that non-serializable attributes such as _session and current_frame_file were properly excluded during serialization. Added comprehensive testing with test_pdbtool_pickle_roundtrip to verify that PDBTool instances could be reliably pickled and restored. This work improved the reliability and maintainability of PDBTool, supporting long-running or distributed workflows by reducing manual state management and enhancing debugging reproducibility through safe and consistent state persistence across sessions.