The description names specific architectural concepts (separation of concerns, dependency inversion, resilience patterns) and some actions (designing features, evaluating module boundaries), but these are more abstract principles than concrete actions. It doesn't list specific deliverables or outputs like 'generate architecture diagrams' or 'refactor modules'.

Clearly answers both 'what' (enforce separation of concerns, dependency inversion, resilience patterns across layered/distributed architectures) and 'when' with an explicit 'Use when...' clause covering four trigger scenarios (designing features, evaluating module boundaries, selecting patterns, resolving scalability bottlenecks).

Includes some relevant terms like 'architectural patterns', 'scalability bottlenecks', 'module boundaries', and 'dependency inversion', but these lean toward technical jargon. Missing more natural user phrases like 'how should I structure my code', 'microservices', 'clean architecture', 'layered architecture', or 'system design'.

The scope is somewhat specific to software architecture, but terms like 'designing new features' and 'selecting architectural patterns' are broad enough to overlap with general software design or code review skills. The focus on 'layered and distributed architectures' helps narrow it, but could still conflict with microservices-specific or general design pattern skills.

The content is lean and efficient, using bullet points and brief definitions without explaining concepts Claude already knows. Every section is tightly written with no unnecessary padding or verbose explanations.

The content is almost entirely abstract principles and definitions with no concrete code, commands, or executable examples. Guidance like 'Use interfaces for communication' and 'Inject dependencies, don't hardcode' describes rather than instructs — there are no specific implementation patterns, code snippets, or copy-paste ready artifacts.

The workflow section lists 5 steps in sequence, but lacks validation checkpoints or feedback loops. There's no guidance on what to do if bounded contexts are wrong, if CAP trade-offs reveal conflicts, or how to verify the architecture is sound before proceeding to documentation.

The skill provides a clear overview with well-signaled one-level-deep references to specific topics (distributed-systems.md, resilience-patterns.md, implementation.md). Content is appropriately split between the overview and reference files with clear navigation.