# Toast Notification V0 Template: Sonner Setup Guide (Replaces shadcn Toast) - Tool: V0 Templates - Last updated: July 2026 ## TL;DR The Toast Notification v0 template demonstrates Sonner — the library that replaced the deprecated shadcn/ui Toast component — with success, error, warning, info, and promise toast variants. Fork it to get a working Toaster wired to example trigger buttons, a position selector, and a rich custom toast with an Undo action. The prompt pack covers form-submit wiring, brand colors, async promise toasts, and undo-delete patterns. ## Frequently asked questions ### Is the Toast Notification v0 template free to fork? Yes. All V0 community templates are free to fork with any v0.dev account. Forking does not consume credits. Sonner is MIT-licensed — no restrictions on commercial use. ### Can I use Sonner toasts in a commercial product? Yes. Sonner is MIT-licensed and free for any use, commercial or otherwise. The generated V0 code is yours to own and ship without attribution requirements. ### Why did my V0 prompt add a shadcn toast that returns a registry 404 error? The shadcn/ui Toast component was removed from the shadcn v4 registry and replaced by Sonner. V0 may still generate import { toast } from '@/components/ui/toast' when you use generic language like 'add a toast notification' in a chat with older code context. Always use Sonner directly: import { toast } from 'sonner'. This template already handles this correctly. ### Why does my fork fire toasts but nothing appears on screen? The component needs to live in app/layout.tsx as a direct child of . If it's inside a page component, it unmounts when you navigate away and active toasts disappear. Move it to the root layout — that's the single most common integration mistake with Sonner in V0 projects. ### How do I wire a toast to a Server Action form submission? After your Server Action returns, check the result in the client component's onSubmit handler. Call toast.success('Message sent!') on success or toast.error('Something went wrong.') on failure. The quick prompt in the pack above gives you the exact implementation — including removing the demo UI. ### Why does my build fail with 'export const metadata conflicts with use client'? V0 sometimes adds an export const metadata = { generator: 'v0.dev' } export to the same file that uses 'use client'. Next.js App Router does not allow metadata exports in Client Components. Remove the metadata export from any file with 'use client' and move it to a Server Component parent. ### Can RapidDev integrate this toast system with a real-time notification backend? Yes. If you need toasts driven by WebSocket events, a notification queue, or a full error monitoring pipeline (like Sentry webhooks triggering in-app alerts), RapidDev can wire this Sonner setup into that infrastructure as part of a production engagement. ### Does this template work with Next.js Server Actions that cause full-page redirects? Standard toast() calls are lost on a full-page redirect because the component unmounts. Use the advanced prompt in the pack — it shows a localStorage queue pattern where you write the pending toast before the redirect and replay it after the new page mounts. This gives you post-redirect feedback without a WebSocket. --- Source: https://www.rapidevelopers.com/v0-template/toast © RapidDev — https://www.rapidevelopers.com/v0-template/toast