Next.js + FastAPI Starter

Next.js + FastAPI

This example shows a monorepo using Vercel Services with a Next.js frontend and a public FastAPI backend.

Demo

https://nextjs-fastapi-services.vercel.app/

How it works

The project is structured as a monorepo:

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nextjs-fastapi/
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├── backend/
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├── frontend/
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└── vercel.json

Services are configured in vercel.json:

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{
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  "services": {
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    "frontend": { "root": "frontend/", "framework": "nextjs" },
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    "backend": { "root": "backend/", "entrypoint": "main:app" }
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  },
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  "rewrites": [
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    {
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      "source": "/svc/api/:path*",
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      "destination": { "type": "service", "service": "backend" }
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    },
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    {
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      "source": "/(.*)",
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      "destination": { "type": "service", "service": "frontend" }
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    }
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  ]
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}

Vercel will route requests to the backend service for URL with paths starting with /svc/api/ and to frontend for all other URLs.

Running Locally

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vercel dev

Open http://localhost:3000 and try:

• /api/hello (Next.js API route)
• /svc/api/status (FastAPI route)

Learn More

• Vercel Services - learn how services work on Vercel.
• Next.js Documentation - learn about Next.js features and API.
• FastAPI Documentation - learn about FastAPI features and API.