fastapi

Python Backend Plugins for Claude Code

A curated collection of Claude Code plugins for Python backend development with FastAPI, SQLAlchemy 2.0, and modern tooling.

Available Plugins

Plugin	Description	Key Commands
ruff-lint	Linting with ruff (ZERO noqa policy)	/lint:check, /lint:explain, /lint:config
pytest-assistant	TDD testing patterns	/test:first, /test:fixture, /test:mock
fastapi-scaffold	FastAPI boilerplate generation	/fastapi:module, /fastapi:dto, /fastapi:endpoint
python-typing	Type annotations (ZERO type:ignore)	/types:check, /types:explain
docker-backend	Docker for development	/docker:run, /docker:file
alembic-migrations	Database migrations with enum handling	/migrate:create, /migrate:check
clean-code	SOLID principles & code smells	/clean:review, /clean:refactor

Installation

From GitHub (recommended)

Inside Claude Code, run these slash commands:

# Add this marketplace
/plugin marketplace add ruslan-korneev/claude-plugins

# Install individual plugins
/plugin install ruff-lint@python-backend-plugins
/plugin install pytest-assistant@python-backend-plugins

# Or install all plugins at once
/plugin install ruff-lint pytest-assistant fastapi-scaffold python-typing docker-backend alembic-migrations clean-code@python-backend-plugins

From local clone

git clone https://github.com/ruslan-korneev/claude-plugins.git
cd claude-plugins

Then inside Claude Code:

# Add local marketplace
/plugin marketplace add ./

# Install plugins
/plugin install ruff-lint@python-backend-plugins

Core Principles

These plugins enforce best practices for Python backend development:

• ZERO noqa / ZERO type:ignore — Always fix properly, never suppress warnings
• TDD (Test-Driven Development) — Write tests first, then implementation
• docker run first — Use simple docker run before docker-compose
• TypedDict > dict[str, Any] — Strict dictionary typing with TypedDict
• Real test database — Never mock the database in tests
• Branch coverage — More important than line coverage

Plugin Structure

Each plugin follows a consistent structure:

plugin-name/
├── .claude-plugin/
│   └── plugin.json          # Plugin manifest
├── commands/
│   └── *.md                 # Slash commands
├── skills/
│   └── skill-name/
│       ├── SKILL.md         # Main skill entry point
│       └── references/
│           └── *.md         # Detailed documentation
├── agents/                  # (optional) Specialized agents
│   └── *.md
├── hooks/                   # (optional) Automation hooks
│   └── hooks.json
└── README.md

Usage Examples

Linting with ruff

/lint:check src/
/lint:explain E501
/lint:config fastapi

TDD Testing

/test:first UserService.create
/test:fixture async_session
/test:mock external_api

FastAPI Scaffolding

/fastapi:module users
/fastapi:dto User
/fastapi:endpoint GET /users/{id}

Type Checking

/types:check src/
/types:explain "Argument of type X is not assignable to parameter of type Y"

Docker

/docker:run postgres
/docker:file fastapi

Database Migrations

/migrate:create add_user_status
/migrate:check

Code Review

/clean:review src/services/
/clean:refactor extract_method

Contributing

See CONTRIBUTING.md for guidelines on:

• Adding new plugins
• Improving existing plugins
• Submitting bug reports

License

MIT License - see LICENSE for details.

Security

For security concerns, see SECURITY.md.