Worked on the spring-projects/spring-ai repository to enhance reliability and integration quality by addressing a critical issue in the OpenAI API tool configuration. Focused on correcting the tool_choice parameter’s type from String to Object, this change enabled support for more complex tool configurations and prevented potential runtime errors in multi-tool workflows. The update involved modifying both the Java implementation and associated JSON structures, as well as revising unit tests to ensure the new behavior was robust and reliable. Emphasized traceability and maintainability by linking the fix to a specific issue and commit, supporting future auditing and ongoing integration stability.