During December 2025, Thiago Paranhos focused on improving the reliability of metrics reporting in the newrelic/entity-definitions repository. He addressed a high-priority bug affecting Golden Metrics Calculation Accuracy by refining YAML configurations to switch HTTP server request aggregation from sum to count, closing gaps in throughput measurement. Thiago also resolved case-sensitivity issues in error rate calculations, ensuring consistent data analysis across environments. His work involved defining and validating metrics, running targeted tests, and aligning metric definitions with actual data semantics. These changes enhanced dashboard reliability and reduced metric drift, demonstrating depth in metrics definition and YAML configuration within operational monitoring systems.