During January 2025, Song contributed to the rancher/calico repository by implementing a default configuration improvement for endpoint status reporting. Song updated the EndpointStatusPathPrefix to '/var/run/calico', ensuring that endpoint status files are consistently written to the intended directory. This change, developed using Go and YAML, enhanced monitoring reliability and reduced the risk of misconfiguration in system administration workflows. The update was carefully scoped to minimize surface-area changes while aligning default behavior with operational expectations. Song also updated documentation and issue tracking to reflect the new default, demonstrating a methodical approach to configuration management and system reliability within the project.