Tool to create or patch FastAPI project with a Vue frontend, with integrated build and development systems. The Python package will not need any JS runtime because it includes a prebuilt Vue frontend in it. For development (Vite and FastAPI auto reloads) and building the package one of npm, deno or bun is required (npm recommended due to bugs in deno and bun).

Features

No JavaScript: Your Python package can be installed and used without any JS runtime
Integrated build system: Vue frontend builds into Python package during uv build
Development server: Single command runs Vite + FastAPI with hot-reload
Optimized static serving: Caching, zstd compression and SPA support

Installation

Install uv, then:

uv tool install fastapi-vue-setup
fastapi-vue-setup --help

Or run directly:

uvx fastapi-vue-setup my-app

Usage

The script may be used to create an all new project folder or to patch or update an existing project to use this framework. It autodetects the project folder given and performs the appropriate actions.

Create a new project

fastapi-vue-setup my-app

This will:

Run uv init my-app
Run create-vue frontend (interactive - choose your Vue options)
Patch the project with FastAPI integration
Install dependencies via uv add

Patch an existing project

You should have your pyproject.toml at the current working directory, and Vue with its package.json under frontend/. If either one is missing, new applications will be initialised. Otherwise we only patch what can be patched without breaking your existing projects.

fastapi-vue-setup .

CLI Options

fastapi-vue-setup [project-dir] [options]

Options:
  --module-name NAME    Python module name (auto-detected from pyproject.toml)
  --dry-run             Preview changes without modifying files

Port Configuration

The tool uses three distinct ports:

Port	Purpose	Used by
5173	Vite dev server (HMR)	`npm run dev` via devserver.py
5180	FastAPI in dev mode	uvicorn via devserver.py
5080	Production server	`uv run my-app`

In development, you access the app at http://localhost:5173. Vite proxies /api/* requests to FastAPI at port 5180. Configurable with devserver.py arguments.

In production, FastAPI serves both the API and static files at http://localhost:5080. Configurable by host:port argument.

Vite Plugin Configuration

The fastapiVue() plugin in vite.config.ts accepts options to customize proxy behavior:

import fastapiVue from "./vite-plugin-fastapi.js";

export default defineConfig({
  plugins: [
    vue(),
    // Default: proxies only /api
    fastapiVue(),

    // Or specify custom paths to proxy to backend
    fastapiVue({ paths: ["/api", "/auth", "/ws"] }),
  ],
});

The plugin reads environment FASTAPI_VUE_BACKEND_URL (default: http://localhost:5180) to determine where to proxy requests. This is set automatically by devserver.py.

Project Structure

After patching, your project will have:

my-app/
├── frontend/                # Vue application
│   ├── src/
│   ├── vite.config.ts       # Builds to ../my_app/frontend-build
│   └── package.json
├── my_app/                  # Python package
│   ├── __init__.py
│   ├── __main__.py          # CLI entry point
│   ├── app.py               # FastAPI application
│   └── frontend-build/      # Built frontend (gitignored)
├── scripts/
│   ├── devserver.py         # Development server
│   └── fastapi-vue/         # Build utilities
└── pyproject.toml           # Project configuration

The script finds your existing fastpi app module and other files and patches them with minimal changes to enable the Vue-FastAPI interconnection.

Development Workflow

# Start dev server (runs both Vite and FastAPI)
uv run scripts/devserver.py

# Build for production
uv build

# Run production server
uv run my-app

Frontend serving

Your FastAPI app will use fastapi-vue to serve the frontend file. Refer to that package's documentation for further configuration.