FastKit — open-source toolkit for FastAPI: repository pattern, service layer, CLI scaffolding, and more

Radomir Brkovic — Tue, 24 Mar 2026 17:46:33 +0000

If you've built more than one FastAPI project, you've probably written the same boilerplate more than once — repository classes, service layers, consistent API response formatting, and database migrations setup. FastKit is our attempt to solve that once, properly.

What is FastKit?

FastKit is an open-source ecosystem of packages built on top of FastAPI. The goal is simple: when you start a new project with FastKit, the first thing you write is business logic — not infrastructure.

It currently consists of two packages:

fastkit-core — the foundation layer:

Repository pattern for database operations (sync + async)
Service layer with lifecycle hooks (before_create, after_update, etc.)
TranslatableMixin — multi-language support built directly into SQLAlchemy models
Validation with structured, translated error messages
HTTP utilities for consistent API responses across services

fastkit-cli — scaffolding tool:

fastkit make module Invoice

This single command generates a complete module — model, schemas, repository, service, and router with all five CRUD endpoints wired up and ready to go. Six files, zero boilerplate.

fastkit migrate make -m "create_invoices"   # alembic revision --autogenerate
fastkit migrate run                          # alembic upgrade head
fastkit db seed                              # run all seeders
fastkit server                               # uvicorn with sane defaults

Why we built it?

FastAPI is intentionally unopinionated about structure. That's a feature — but it means every team rebuilds the same patterns from scratch. FastKit standardizes the parts that rarely need to vary, so you can focus on what actually makes your product different.

Where to find it?

📖 Full docs: fastkit.org
⭐ GitHub: fastkit-org/fastkit-core · fastkit-org/fastkit-cli

It's early, MIT licensed, and we'd genuinely appreciate feedback — what's missing, what's confusing, what you'd use in a real project. Stars on GitHub also help a lot with visibility.

A Python library that lets you switch email providers without changing your code

Radomir Brkovic — Sat, 25 Oct 2025 10:03:56 +0000

Hey everyone 👋

I’ve recently released Mailbrig, a lightweight Python library that provides a unified interface for sending emails through multiple providers — including SMTP, SendGrid, Mailgun, Brevo (Sendinblue), and Amazon SES.

The main goal was to simplify provider integration — you can switch between them just by changing the configuration, without modifying your code.
It also comes with a small CLI tool for quick testing and setup.

📦 PyPI: Mailbridge
💻 GitHub: Mailbridge

Everything’s open source and tested.
I’d love to hear feedback or suggestions for new providers/features. 🙌

Example:

from mailbridge.mail import Mail

Mail.send(
    to="user@example.com",
    subject="Welcome!",
    body="<h1>Hello from MailBridge!</h1>",
    from_email="no-reply@example.com"
)

DEV Community: Radomir Brkovic

FastKit — open-source toolkit for FastAPI: repository pattern, service layer, CLI scaffolding, and more

What is FastKit?

Why we built it?

Where to find it?

A Python library that lets you switch email providers without changing your code