FastAPI Intro 101: Getting Started With Your First FastAPI Application

FastAPI is a modern, high-performance Python framework for building APIs. It is easy to learn, extremely fast, and automatically generates interactive API documentation.

In this tutorial, you'll create your first FastAPI application using uv, run the development server, and explore the built-in documentation.

Before starting, ensure you have:

• Python 3.10 or newer
• uv installed
• VS Code or another editor
• Basic Python knowledge

The uv init command creates a new Python project and generates a pyproject.toml file.

Install FastAPI together with its recommended standard dependencies.

This installs FastAPI, Uvicorn, and other recommended packages required for development.