Architecture Review

Design the smallest architecture that can survive the next real change.

Grok Build Mode

• Start in Plan Mode. Architecture work should not begin with edits.
• Use subagents for parallel discovery:
  • domain: core entities, use cases, invariants.
  • data: persistence, schemas, migrations, ownership.
  • interfaces: APIs, UI boundaries, jobs, integrations.
  • risk: coupling, circular dependencies, deployment constraints.
• Arena-style design: compare 2-3 architecture options and rank by reversibility, simplicity, and testability.
• Human-in-the-loop: ask for approval before introducing new layers, packages, services, or dependencies.

Workflow

1. Clarify the product/job-to-be-done.
2. Map current modules and data flow.
3. Identify constraints: runtime, team, deploy, scale, compliance.
4. Propose options:
   • minimal change;
   • modular boundary;
   • larger redesign if justified.
5. Recommend one path with migration steps.
6. Define tests and observability needed.

Architecture Rules

• Prefer modular boundaries over premature microservices.
• Keep dependency direction explicit.
• Put business rules where they can be tested without infrastructure.
• Avoid abstract factories/layers unless they remove real coupling.
• Write an ADR for major choices.

Example Prompts

Use architecture-review. Compare clean/hexagonal/modular approaches for this feature and recommend the smallest reversible plan.

Map the current data flow with subagents, identify coupling risks, and propose an ADR before edits.