Worked on the modelcontextprotocol/go-sdk repository to address a critical bug affecting JSON serialization of the ElicitationCapabilities struct. Focused on backend development using Go, the work involved adding precise JSON struct tags to ensure all fields serialize with lowercase keys, fully aligning with MCP protocol requirements. This targeted fix resolved initialization failures and mitigated downstream interoperability risks, particularly those related to docker/cagent integration. The approach emphasized minimal code changes for maximum protocol compliance, maintaining code health and clear traceability. Leveraged skills in API design and Go to deliver a robust solution that improved reliability without introducing unnecessary complexity or feature changes.