Python Backend Architecture Review — Claude Code skill: backend

What Python Backend Architecture Review does

The skill activates when you ask the agent to review a Python application's architecture or a system design document. It then works through sections: architectural style and service boundaries, database, API, security, scalability, observability.

Inside is a review framework with clarifying questions. The agent asks about expected scale, latency requirements, security and compliance needs, and team size, then analyses the diagram: component relationships, data flows, external dependencies, stack choices, deployment topology. Python specifics get their own treatment — ASGI versus WSGI, async/await, the GIL, multiprocessing against threading, ORM and drivers, background jobs.

Feedback comes as specific points rather than general impressions: where coupling is too tight, where the load bottleneck sits, which caching layers are missing, what the index and migration strategy looks like. The skill does not read your code on its own — it needs a document or a written description of the system, otherwise there is nothing to review. Security notes stay within what you describe: authentication mechanisms, authorization model, encryption, secrets handling.