Backend Bugfix & Testing

About

The Backend Bugfix skill provides a standardized framework for Claude to diagnose and repair server-side issues. It utilizes a comprehensive error classification system covering database integrity, Pydantic validation, API routing, and asynchronous programming. By implementing a confidence-scored workflow and Test-Driven Development (TDD) best practices, this skill ensures that backend fixes are not only correct but also verified through automated testing, linting, and type checking.

Key Features

• Pre-configured Pytest patterns for fixtures, async tests, and parametrization
• Error classification system for DB, Validation, API, Auth, and Async issues
• Quality gate enforcement for coverage, linting (flake8), and typing (mypy)
• Confidence scoring system (0-100) to guide automated vs. human-led fixes
• 1 GitHub stars
• Integrated TDD workflow including Red-Green-Refactor phases

Use Cases

• Debugging complex SQLAlchemy transaction and database integrity errors
• Resolving Pydantic schema validation and 422 Unprocessable Entity errors
• Fixing failing Pytest suites in FastAPI and Python backend projects