Backend Code Review (Python/FastAPI)

Analyze Python FastAPI backends for async performance and concurrency risks.

1|1|Updated Jan 16, 2026
One-click install
npx skills add https://github.com/Bambibanners/master_of_puppets --skill backend-code-review-python-fastapi
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: Backend Code Review (Python/FastAPI)
Source: https://github.com/Bambibanners/master_of_puppets/tree/main/.agent/skills/review-backend
Command: npx skills add https://github.com/Bambibanners/master_of_puppets --skill backend-code-review-python-fastapi

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) components.

What problem does it solve?

Analyzes Python FastAPI backends to identify architectural issues, async performance bottlenecks, and logic quality gaps.

Core Features & Use Cases

  • Static AST-based review to detect blocking I/O in async functions.
  • Identifies long-running async functions and potential concurrency hazards.
  • Highlights common architectural anti-patterns like global DB sessions and improper DI usage.
  • Use case: audit a FastAPI service to improve throughput and reliability.

Quick Start

Run the analyse_ast tool against your Python FastAPI project to identify async performance hotspots.

Frequently Asked Questions about Backend Code Review (Python/FastAPI)

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I find blocking calls in async FastAPI routes?▼

Finding blocking calls in async FastAPI routes requires static AST analysis to scan data access patterns and dependencies, surfacing synchronous I/O operations that degrade throughput in a structured report.

What causes concurrency hazards in Python FastAPI backends?▼

Concurrency hazards in Python FastAPI backends stem from architectural anti-patterns like global DB sessions and improper dependency injection, creating shared state risks and long-running async bottlenecks.

How do I audit a FastAPI service for async performance bottlenecks?▼

Auditing a FastAPI service for async performance bottlenecks involves analyzing routes and data access patterns to identify long-running async functions and inefficiencies, producing a structured remediation report.

Can static analysis detect improper dependency injection in FastAPI?▼

Static analysis detects improper dependency injection in FastAPI by scanning the abstract syntax tree to highlight architectural anti-patterns and improper DI usage within your backend codebase.

Does AST analysis work with Async SQLAlchemy and HTTP clients?▼

AST analysis works with Async SQLAlchemy and HTTP clients by scanning codebases leveraging these libraries to surface blocking calls and architectural issues across data access patterns.

When should I review my FastAPI backend architecture for logic quality gaps?▼

Review your FastAPI backend architecture for logic quality gaps when preparing to improve throughput and reliability, ensuring no long-running async functions or concurrency risks impact performance.