NVIDIA NeMo Relay offers a common layer to observe agent behavior during runs. It captures ordered lifecycle events and structured trajectories.
Hermes Agent integrates NeMo Relay natively, generating event streams, step-by-step trajectories, and OpenTelemetry spans. These help inspect model and tool calls, errors, retries, and timing.
A simple task runs a script inside an isolated Docker container, printing a fixed value. This confirms the setup works and produces trace files.
A more complex research task involves web searches, verification, and report writing. All steps are traced and sent to Phoenix for analysis.
A case study compared baseline and fixed revisions over 108 runs. It showed that a model called Qwen Coder 30B recovered more tasks but increased calls and latency.
Using these traces, developers can evaluate harness changes, identify inefficiencies, and improve agent safety and performance.
Why it matters
Structured traces help understand agent behavior, improve reliability, and reduce errors.
What to do
Set up NeMo Relay with Hermes Agent. Run simple and complex tasks, then review the traces to analyze performance.
Source: https://developer.nvidia.com/blog/tracing-agent-harness-behavior-with-nvidia-nemo-relay/