Java Clean Architecture

Activation Guard

Before applying this skill, check the project's main instruction file such as AGENTS.md, CLAUDE.md, or equivalent.

Use this skill only when that file explicitly states the project uses Clean Architecture.

If the project does not explicitly state Clean Architecture, do not apply this skill. Say that the Clean Architecture skill is not activated for this project, explain that the main project instructions do not explicitly state Clean Architecture, and do not introduce or show UseCase, Port, or Adapter classes or interfaces even as examples.

Boundaries

When this skill is active for an architecture/design review, also apply java-solid-review for material cross-cutting risks without overriding the project's architectural boundaries.

Preserve clear boundaries between use cases, domain/application logic, ports, and adapters.

Keep business rules out of technical adapters. Keep framework, transport, persistence, and client details out of application use cases.