Tracing Agent Harness Behavior with NVIDIA NeMo Relay | NVIDIA Technical Blog

This post introduces NVIDIA NeMo Relay as a common observability layer for agent harnesses, enabling detailed tracing of agent behavior. It demonstrates how NeMo Relay integrates with Hermes Agent to produce ATOF event streams, ATIF trajectories, and OpenTelemetry spans. The post provides a practical example of using these traces to debug agent inefficiencies, compare harness revisions (e.g., Hermes ToolPerf case study), and verify task outcomes. It highlights the value of structured traces for understanding model and tool interactions, token usage, and error recovery, contributing to the development of more robust and auditable AI agents.