During September 2025, Misaka Zhou enhanced the envoyproxy/ai-gateway repository by implementing a configurable gRPC MaxRecvMsgSize flag, enabling support for larger data transfers within the AI gateway stack. This backend development work, written in Go, involved integrating the new configuration option into both the controller and external processor components, allowing for more reliable and higher-throughput message handling in high-volume environments. Misaka demonstrated a disciplined approach to configuration management, aligning changes with existing CI and review processes. The work laid a technical foundation for future large-message workflows, reflecting a focused and well-integrated engineering contribution over the month.