No Agent Reviews Its Own Work

Description and use

Deploying four AI roles—executor, reviewer, test, visual regression—alongside human oversight enabled a zero‑downtime Angular migration, improving traceability and reliability of changes.

Problem

Migrating a critical enterprise healthcare platform from Angular 11 to 15 without downtime while ensuring AI-generated fixes are correct and traceable.

Outcome

Implemented a four‑role AI workflow that reduced manual effort, increased traceability, and prevented silent regressions during a critical, zero‑downtime Angular migration.

Workflow

• 1. Executor agent upgrades Angular and resolves build errors.
• 2. Reviewer agent examines executor’s changes for correctness, convention adherence, and root‑cause resolution.
• 3. Test agent runs the relevant verification suite (unit, integration, smoke).
• 4. Visual regression agent compares UI renders across versions and reports differences.
• 5. Human reviewer assesses all outputs, applies a checklist, and decides whether to advance to the next version.

Evidence

The hard part is different: how do you know the agent's fixes were correct?

Source

In one migration step, the reviewer flagged aspects of the executor's changes and gave reasons for its objections.

Source