Worked on stabilizing image data handling within the Agentloop component of the volcengine/verl repository, focusing on backend reliability and data integrity. Addressed a bug that previously caused duplication and errors when appending images during multi-round tool calls, ensuring that image data is now correctly managed within the agent’s data structure. Utilized Python for backend development and API integration, aligning documentation and commit messages with the implemented changes to support maintainability and auditability. The work emphasized careful debugging and precise logic correction, resulting in improved downstream processing and a more robust multi-round tool call flow for the project.