How do I add a chatbot to a v0 project?

Sign up at Asyntai and copy your snippet. Because v0 generates Next.js apps, there is no index.html file: open the built-in editor, find your root layout file at app/layout.tsx, and paste the snippet inside the body element, just before it closes. You can also paste the snippet into the v0 chat and ask for it to be added to the root layout. Then open the Publish menu and choose Publish to Production.

Where exactly does the snippet go in a Next.js app from v0?

In the root layout, so it is present on every route instead of a single page. Placing it at the end of the body element keeps it out of the critical rendering path. If your project uses a route group with its own layout, add it to the outermost layout that wraps the pages your visitors see.

Does the chatbot work on the vercel.app URL and on a custom domain?

Yes. Publishing from v0 creates a Vercel project with one production URL, and the widget runs there and on any custom domain you attach from the Publish menu or the Vercel dashboard. Preview deployments work too, which is useful for testing before you promote a change.

Will the chatbot survive a GitHub sync or a later v0 generation?

It lives in your repository like any other code, so it syncs both ways with GitHub and stays through ordinary edits. Only a prompt that rewrites the root layout can remove it, and re-adding it is one more message in the chat.

Is there a free plan I can test with?

Yes. The free plan includes 100 messages per month, which is enough to test the chatbot on a preview deployment and on your first days of live traffic. Paid plans raise the limit and add more features.

Works on v0.app projects deployed to Vercel

AI Chatbot for v0 — your app looks funded. Make it answer like it too

v0 turns a description into a real Next.js app, on real Vercel infrastructure, with a production URL and a design that would pass a review. Then a visitor asks something the interface does not cover, and the polish stops at the contact form. Asyntai closes that last gap with one script tag: a chatbot that answers using your own content, on every route, in the visitor's language.

Get Started Free See the 3-step install

Try the chatbot on your published v0 app first

Enter the production URL of your v0 project and see how the chatbot would answer real visitor questions on it.

A v0 app raises expectations it then has to meet

Design is a promise. When someone lands on something built in v0 — typed layout, consistent components, fast first paint on Vercel — they read it as a company with a team behind it. They do not think about the fact that the whole thing was described into existence on a Tuesday. They think: these people are serious, so they will know the answer to my question.

That expectation is an asset right up to the moment it is tested. A visitor who cannot find whether you serve their country, or whether the plan they want includes the feature they need, has one of two experiences. Either the site tells them, or the site quietly reveals that the polish was only skin deep and there is nobody home behind it.

The design earned their trust in two seconds. A silent contact form gives it back just as fast.

A chatbot is the cheapest way to keep the promise. It reads the pages you already shipped, replies in the same breath as the question, and passes anything genuinely new to you with the email attached. It also travels: because it sits in the root layout, it works on every route v0 generated, including the ones you added last night.

How to add a chatbot to a v0 app in three steps

Create your chatbot. Sign up free at Asyntai, point it at your production URL so it reads your pages, and copy the snippet from your dashboard.

Paste it into your root layout. Projects from v0 are Next.js, so there is no index.html. Open the built-in editor, go to app/layout.tsx, and paste the snippet inside <body>, just before it closes. Or ask in chat with the prompt below.

Publish to Production. Open the Publish menu and publish the change. The chat bubble goes live on your Vercel production URL and on any custom domain you have attached.

Add this script tag to app/layout.tsx, at the end of the body element, so it loads on every route. Do not change any other component: [paste your Asyntai snippet]

Prefer to work locally? The snippet is ordinary HTML, so it travels through the GitHub integration like any other commit and comes back into v0 on the next sync. Either way, the install is a single paste and one deploy.

What your v0 chatbot does for visitors

Answers using your own content

It works from the pages you published and the documents you upload, so replies match what your app actually offers.

Qualifies before you wake up

Serious visitors get their answer and leave an email. The full conversation, not just the address, waits in your dashboard.

Global from day one

A Vercel deploy is fast everywhere, so your traffic is not local. The chatbot detects and replies in 30+ languages automatically.

Fits the design you generated

Colour, placement, greeting, and tone are configured in the dashboard, so the widget looks deliberate rather than bolted on.

Chatbot questions v0 users ask

How do I install it in a v0 project?

Paste the snippet at the end of <body> in app/layout.tsx using the built-in editor, or ask in chat, then Publish to Production.

Why the layout file and not index.html?

Next.js has no index.html. The root layout wraps every route, so one paste covers the whole app instead of one page.

Does it run on the vercel.app URL and custom domains?

Yes, and on preview deployments too, which makes it easy to check the chatbot before you promote the change to production.

Does GitHub sync break it?

No. It is code in your repository, so it moves in both directions with the sync and only disappears if a prompt rewrites the root layout.

What does it cost?

The free plan includes 100 messages per month. Higher limits and additional features are listed on pricing.

Building on something else?

The same snippet, the same five minutes, whichever builder produced the site.

Match the support to the interface

One script tag in the root layout, one deploy, and your app answers for itself on every route. Free to start.

Get Started Free