During March 2025, Mateng worked on the OpenManus repositories, focusing on backend development and code quality improvements using Python. In menloresearch/OpenManus, Mateng replaced string literals with Enum classes for Role and ToolChoice, enhancing type safety and code readability. For FoundationAgents/OpenManus, Mateng addressed a bug in temperature handling by ensuring that a value of zero is treated as valid, preventing unintended defaulting. Additionally, Mateng refactored the assignment of the LLM temperature parameter to improve maintainability without altering functionality. These contributions emphasized type hinting, refactoring, and code formatting, supporting more reliable and collaborative development across both repositories.