Manuel Ibar focused on backend development in Go, addressing a critical race condition in the modelcontextprotocol/go-sdk repository. He improved the StreamableClientTransport component by refining context propagation, ensuring that request-scoped values such as authentication tokens and trace IDs were reliably passed to background HTTP operations. His approach involved using the parent context in Connect() and reordering the cleanup sequence in Close() to perform DELETE requests before canceling the context, which eliminated premature cancellations during shutdown. This work enhanced the reliability of long-running API interactions and demonstrated a deep understanding of Go’s context semantics and robust API development practices.