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NeMo Relay traces agent runs across tools and model calls

developer.nvidia.com by William Markito Oliveira 13 min read Editor score 8/10

NeMo Relay captures ordered agent lifecycle events, structured trajectories and OpenTelemetry spans, with Hermes examples sending traces to Arize Phoenix. Such traces help teams inspect failures and evaluate whether harness changes improve task outcomes.

What: NeMo Relay provides an observability layer for agent runs, capturing ordered lifecycle events and structured trajectories.
How: Hermes Agent emits ATOF events, ATIF trajectories, and OpenTelemetry spans; traces can be inspected in Arize Phoenix.
Why it matters: Combining task verification with traces lets engineers assess agent outcomes alongside tool calls, retries, errors, duration, and token use.

NeMo Relay captures Hermes Agent run data for inspection in Arize Phoenix. Sketched from the article's own text.

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