Problem
In long-horizon agentic workflows, the most expensive failures are not the
visible ones. They are the ones that look like normal operation.
Expected steps get skipped without triggering an error. Repairs accumulate
across cycles without being recognized as a pattern. Handoffs introduce
noise that compounds quietly. Outputs remain plausible while the workflow
drifts further from the intended behavior — and the system continues to run,
producing results that pass surface-level checks, until the degradation is
significant enough to become undeniable.
By that point, you have already run the affected workflow many times. You
have no structured record of when the drift began, what changed, or what
intervention would address it.
Existing observability tools give you the raw evidence — traces, events,
costs, errors. What they do not give you is an interpretation of how the
workflow is degrading across cycles. That gap is what SDVM is designed
to close.