Codex High-Risk Change Governance — Advanced Controls for Critical Releases

Official References: Best Practices · Review · Sandboxing

Advanced mode is about failure containment

For high-risk surfaces (auth, billing, permissions, migration), speed is not the primary metric. The primary metric is predictable failure containment.

Required governance declarations

Before implementation starts, declare:

• risk class (medium/high/critical)
• final go/no-go owner
• rollback trigger conditions
• escalation channel and deadline policy

If these are missing, you are not in controlled execution.

Five mandatory gates

1. code-quality gate
2. security/behavior gate
3. operations-readiness gate
4. communication gate
5. final decision gate

All five gates need explicit pass/fail status.

Advanced decision record

### Critical Change Decision
 
- Scope:
- Risk class:
- Gate statuses:
- Residual risks:
- Rollback trigger:
- Rollback owner:
- Escalation channel:
- Final decision owner:
- GO/NO-GO + timestamp:

This record is your audit artifact when incidents happen.

Escalation rule

If a high-risk blocker survives two loops:

1. set status to blocked
2. attach command-level evidence
3. assign a new owner
4. set a hard deadline
5. re-run gate evaluation after fix

Rollback rehearsal requirement

For high/critical classes, rollback must be rehearsed in non-production. A theoretical rollback is not a valid rollback.

Advanced anti-patterns

Tests pass -> auto deploy

This ignores operational and communication gates.

No named final owner

Decision ambiguity causes incident-time paralysis.

Escalation without deadline

Risk remains open while everyone assumes someone else is handling it.

Quick checklist

Before production:

• governance declarations complete
• five gate statuses recorded
• rollback rehearsed
• final owner signed off
• escalation path active

Advanced Codex operation is governed execution under pressure, not just capable generation.