During April 2025, this developer focused on stabilizing the DeepSeek integration within the cloudwego/eino-ext repository. They addressed a critical bug by ensuring that function call payloads included the necessary tool call IDs and details, which resolved persistent 422 errors from the DeepSeek server. Working primarily in Go, they applied strong backend development and API integration skills to improve the reliability of end-to-end function calls and downstream processing. Their work demonstrated careful debugging and error handling, resulting in a more robust integration. Although the period involved no new features, the targeted bug fix contributed to the overall stability of the system.