Worked on the langgenius/dify repository to address a targeted bug affecting manual parameter configuration on the Agent Node. The solution restored explicit user control over tool parameters, replacing reliance on auto-generated defaults and reducing the risk of misconfiguration during deployment. This backend fix was implemented using Python and API development skills, with careful attention to configurability and reliability. The change was validated through continuous integration pipelines and peer review, involving collaboration with teammates and automated CI tools. Although the work focused on a single bug fix rather than new features, it demonstrated depth in backend development and cross-team communication practices.