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clean-architecture-checker

Testing & Quality
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Verifies code follows Clean Architecture principles in Polibase. Activates when creating or modifying src/domain, src/application, src/infrastructure, or src/interfaces files. Checks dependency rules, entity independence, repository patterns, DTO usage, and type safety.

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How to use this skill

Bring this guide into your coding agent with a prompt tailored to the tool you use.

  1. Open your project in Codex.
  2. Copy the prompt below and paste it into your agent.
  3. Review the proposed files and risks before you approve installation.
Prompt to paste
I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/devops/clean-architecture-checker-trust-chain-organiza-sagebase/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/clean-architecture-checker/. Do not write files or run scripts until I approve.

After I approve, install the complete skill folder, including required referenced files, into that project location. Verify it is discoverable, then tell me its actual invocation name and how to use it. Do not claim it is installed until you have verified it.

Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Clean Architecture Checker

Purpose

Verify that new code follows Clean Architecture principles as defined in the Polibase project.

When to Activate

This skill activates automatically when:

  • Creating or modifying files in src/domain/, src/application/, src/infrastructure/, or src/interfaces/
  • Reviewing code changes across multiple layers
  • Adding entities, repositories, use cases, or services

Quick Checklist

Before approving code, verify:

  • Dependency Rule: Dependencies point inward (Domain ← Application ← Infrastructure ← Interfaces)
  • Entity Independence: Domain entities have no framework dependencies (no SQLAlchemy, Streamlit, etc.)
  • Repository Pattern: All repos inherit from BaseRepository[T] and use async/await
  • DTO Usage: DTOs used for layer boundaries, not raw entities
  • Type Safety: Complete type hints with proper Optional handling
  • Tests: Unit tests for domain services and use cases

Core Principles

1. Dependency Rule

Dependencies must point inward: Domain ← Application ← Infrastructure ← Interfaces

✅ Domain imports nothing from outer layers ✅ Application only imports Domain ✅ Infrastructure imports Domain and Application ✅ Interfaces imports all inner layers (but not other Interface modules)

2. Entity Independence

Domain entities must not depend on external frameworks

✅ Use @dataclass or Pydantic BaseModel ❌ No SQLAlchemy models in Domain ❌ No UI framework imports in Domain

3. Repository Pattern

All repositories follow async/await with ISessionAdapter

✅ Interfaces in Domain: class IRepo(BaseRepository[T]) ✅ Implementations in Infrastructure: class RepoImpl(BaseRepositoryImpl[T], IRepo) ✅ All methods are async def

4. DTO Pattern

Always use DTOs between layers

✅ DTOs in src/application/dto/ ✅ Input DTO → Use Case → Output DTO ❌ Never expose domain entities directly to outer layers

5. Type Safety

Leverage Python 3.11+ type hints

✅ All public methods have type hints ✅ Use T | None for nullable types ✅ Explicit None checks for Optional values

Common Violations

See examples.md for detailed good/bad code examples.

Detailed Reference

For comprehensive architecture guidelines, see reference.md.

Templates

Use templates in templates/ directory for creating new:

  • Domain entities
  • Repository interfaces and implementations
  • Use cases with DTOs
  • Domain services

References