Time Travel & Replay

Deterministic replay of past runs with side effects intercepted. Every run captures a complete snapshot — LLM I/O, tool call args/responses, and intermediate state.

Use cases

Debugging — inspect exact state at any step of a failed run
Compliance — prove what happened and when
Policy testing — replay under a new guardrail without real cloud actions
Training — team learning from real run traces

Using replay


# CLI
cendriix replay run_a1b2c3d4
cendriix replay run_a1b2c3d4 --step 5
cendriix replay run_a1b2c3d4 --policy new-guardrails.yaml
 
# API
curl -X POST https://api.cendriix.ai/v1/runs/run_a1b2c3d4/replay \
  -H "Authorization: Bearer <jwt>" \
  -d '{"step": 1}'

Safety

Replay runs are marked synthetic and do not: generate real audit events, execute cloud operations, affect billing cost meters, or trigger approval gates (auto-approved from original decisions).