Developed a robust Read-Only Network Metrics API for the unraid/api repository, focusing on delivering expanded per-interface data and real-time monitoring capabilities. Leveraged JavaScript and TypeScript to implement 2-second polling of network metrics, reading Linux counters directly from /sys/class/net to ensure high data fidelity. Extended the GraphQL schema to expose detailed interface attributes and enabled real-time subscriptions for live metrics. Emphasized code quality through comprehensive unit and integration testing, linting, and type-checks, resulting in a reliable and observable API. This work improved operational insight and anomaly detection by mapping system network statistics to GraphQL-friendly fields for enhanced monitoring.