You Recorded the Incident. Now Prove Your Fix Actually Works.

Short summary

A technique called cut-point replay lets teams verify agent fixes against frozen production incidents without re-running the model. You stub everything upstream of your change (serving recorded inputs byte-for-byte) and run only your new code live downstream. This proves the fix works against the exact conditions that caused the original failure, with no API cost or flakiness.

• •Cut-point replay freezes an incident and runs only your changed code live against recorded inputs
• •Eliminates non-determinism: no model calls, no fresh sampling, no retrieval drift
• •Demonstrated with a deletion-agent guardrail test using the Chronicle library

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