Worked on the harness-go-sdk repository to deliver a targeted feature enhancement for AWS Manual Config, introducing SessionTokenRef to improve credential management security and flexibility. The approach involved updating Go data models to support the new SessionTokenRef field, ensuring that session tokens could be referenced securely rather than stored directly. Comprehensive documentation updates in Markdown accompanied the code changes, clarifying usage and integration details for users. The work was validated with a fix-tagged commit to ensure proper integration and adherence to security standards. This contribution focused on Go development and documentation, addressing operational needs for secure AWS manual configuration workflows.