NVIDIA turns agent failure traces into executable evaluations

Focus: Technical AI Engineering
Date: November 4, 2026
Topics: Trace evaluation, Harness repair, Held-out tests
Evidence: Publisher Authored
Availability: Available

Recorded request, draft, tool-call and unwanted-send states become a reproducible failure test, requirement review and replaced harness layer.

Summary: NVIDIA describes a NeMo Compass workflow that converts failed agent traces into Harbor or NeMo Gym evaluations, repairs the harness, and reruns development plus held-out tests. Its vendor case study reports fewer malformed tool calls, better scores, and lower tool use across six scenarios; those results require independent reproduction.

Why it matters: The useful pattern is trace-to-test discipline, not the reported uplift. Teams can preserve a failure, generate a minimal evaluation, fix the harness, and verify both development and held-out cases before promoting an agent update.

Source: Use NVIDIA NeMo to Turn Agent Failures Into Tests and Harness Fixes

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