# Use Managed Better Auth with TanStack Router

:::callout{intent="note" title="Using an AI coding tool?"}
Run `npx neon@latest init` to connect the [Neon MCP server](/guides/postgres-ai-neon-mcp-server) and [Agent Skills](/guides/ai-agents-on-neon-ai-agent-skills) for Managed Better Auth. See [Set up with your AI editor](/guides/auth-index#set-up-with-your-ai-editor) for MCP tools, example prompts, and how skills help wire auth into your app.
:::

:::::steps
:::step{title="Create a Neon project with Auth enabled"}
If you don't have a Neon project yet, create one at [console.neon.tech](https://console.neon.tech/).

Go to the **Auth** page in your project dashboard and click **Enable Auth**.

You can then find your Auth URL on the Configuration tab. Copy this URL - you'll need it in the next step.

Console

<img src="../img/site-assets/neon.com/docs/auth/neon-auth-base-url-wmtmo7.png" alt="Managed Better Auth Base URL">
:::

:::step{title="Create a TanStack Router app"}
Create a new TanStack Router app using the file-router template.

```bash
npx create-tsrouter-app@latest my-app --template file-router --tailwind
```
:::

:::step{title="Install the Managed Better Auth SDK"}
Install the Managed Better Auth SDK and UI library:

```bash
cd my-app && npm install @neondatabase/neon-js@latest @neondatabase/auth-ui
```
:::

::::step{title="Set up environment variables"}
Create a `.env` file in your project root and add your Auth URL:

:::callout{intent="note"}
Replace the URL with your actual Auth URL from the Neon Console.
:::

```bash title=".env"
VITE_NEON_AUTH_URL=https://ep-xxx.neonauth.us-east-1.aws.neon.tech/neondb/auth
```
::::

::::step{title="Add Managed Better Auth styles"}
Open your existing `src/styles.css` file and add this import at the **top**, right after the Tailwind import:

:::callout{intent="note" title="Not using Tailwind?"}
See [UI Component Styles](/guides/auth-reference-ui-components#styling) for alternative setup options.
:::

```css title="Add to src/styles.css"
@import '@neondatabase/auth-ui/tailwind';
```
::::

::::step{title="Configure the auth client"}
Create a `src/auth.ts` file to initialize the auth client:

:::callout{intent="note" title="Using Auth and Data API together?"}
This quick start uses the standalone Auth client. For one `createClient()` instance that derives both Auth and Data API URLs from a single Neon URL, see [`createClient()` initialization](/guides/postgres-reference-javascript-sdk#initializing).
:::

```typescript title="src/auth.ts"
import { createAuthClient } from '@neondatabase/neon-js/auth';
import { BetterAuthReactAdapter } from '@neondatabase/neon-js/auth/react/adapters';

// credentials: 'include' sends the session cookie on cross-origin requests.
// Required if you later call authClient.token() from an origin other than your Managed Better Auth URL.
export const authClient = createAuthClient(import.meta.env.VITE_NEON_AUTH_URL, {
  adapter: BetterAuthReactAdapter(),
  fetchOptions: { credentials: 'include' },
});
```
::::

::::step{title="Create the Auth Provider"}
Wrap your application with the `NeonAuthUIProvider` in `src/routes/__root.tsx`. This makes the auth state available to the UI components used throughout your app.

Pass props to `NeonAuthUIProvider` for any features you want to use. Only the `authClient` prop is required.

:::accordion{title="Example: Adding optional props"}
```tsx
<NeonAuthUIProvider
  authClient={authClient}
  social={{ providers: ['google', 'github', 'vercel'] }}
  navigate={navigate}
  credentials={{ forgotPassword: true }}
>
  {children}
</NeonAuthUIProvider>
```
:::

```tsx title="src/routes/__root.tsx"
import { Outlet, createRootRoute } from '@tanstack/react-router';
import { TanStackRouterDevtoolsPanel } from '@tanstack/react-router-devtools';
import { TanStackDevtools } from '@tanstack/react-devtools';
import { NeonAuthUIProvider } from '@neondatabase/auth-ui';
import { authClient } from '../auth';

export const Route = createRootRoute({
  component: () => (
    <NeonAuthUIProvider authClient={authClient}>
      <Outlet />
      <TanStackDevtools
        config={{
          position: 'bottom-right',
        }}
        plugins={[
          {
            name: 'Tanstack Router',
            render: <TanStackRouterDevtoolsPanel />,
          },
        ]}
      />
    </NeonAuthUIProvider>
  ),
});
```
::::

:::step{title="Create the Auth page"}
Create a route to handle authentication views (sign in, sign up, etc.). Create `src/routes/auth.$pathname.tsx`:

```tsx title="src/routes/auth.$pathname.tsx"
import { createFileRoute } from '@tanstack/react-router';
import { AuthView } from '@neondatabase/auth-ui';

export const Route = createFileRoute('/auth/$pathname')({
  component: Auth,
});

function Auth() {
  const { pathname } = Route.useParams();
  return (
    <div
      style={{
        display: 'flex',
        justifyContent: 'center',
        alignItems: 'center',
        minHeight: '100vh',
      }}
    >
      <AuthView pathname={pathname} />
    </div>
  );
}
```
:::

:::step{title="Create the Account page"}
Create a route to handle account management views. Create `src/routes/account.$pathname.tsx`:

```tsx title="src/routes/account.$pathname.tsx"
import { createFileRoute } from '@tanstack/react-router';
import { AccountView } from '@neondatabase/auth-ui';

export const Route = createFileRoute('/account/$pathname')({
  component: Account,
});

function Account() {
  const { pathname } = Route.useParams();
  return (
    <div
      style={{
        display: 'flex',
        justifyContent: 'center',
        alignItems: 'center',
        minHeight: '100vh',
      }}
    >
      <AccountView pathname={pathname} />
    </div>
  );
}
```
:::

:::step{title="Protect your routes"}
You can protect your routes using the `SignedIn` and `RedirectToSignIn` components. Access the user's session and profile data using the `useSession` hook.

Update `src/routes/index.tsx` to protect the home page:

```tsx title="src/routes/index.tsx"
import { createFileRoute } from '@tanstack/react-router';
import { SignedIn, UserButton, RedirectToSignIn } from '@neondatabase/auth-ui';
import { authClient } from '@/auth';

export const Route = createFileRoute('/')({
  component: Home,
});

function Home() {
  const { data } = authClient.useSession();

  return (
    <>
      <SignedIn>
        <div
          style={{
            display: 'flex',
            flexDirection: 'column',
            justifyContent: 'center',
            alignItems: 'center',
            minHeight: '100vh',
            gap: '2rem',
          }}
        >
          <div style={{ textAlign: 'center' }}>
            <h1>Welcome!</h1>
            <p>You're successfully authenticated.</p>
            <UserButton />
            <p className="font-medium text-gray-700 dark:text-gray-200 mt-4">
              Session and User Data:
            </p>
            <pre className="bg-gray-900 text-gray-100 p-4 rounded-lg text-sm overflow-x-auto whitespace-pre-wrap break-words w-full max-w-full sm:max-w-2xl mx-auto text-left">
              <code>
                {JSON.stringify({ session: data?.session, user: data?.user }, null, 2)}
              </code>
            </pre>
          </div>
        </div>
      </SignedIn>
      <RedirectToSignIn />
    </>
  );
}
```
:::

:::step{title="Start your app"}
Start the development server, then open [http://localhost:3000](http://localhost:3000/). You'll be redirected to the sign-in page.

```bash
npm run dev
```
:::

:::step{title="See your users in the database"}
As users sign up, their profiles are stored in your Neon database in the `neon_auth.user` table.

Query your users table in the SQL Editor to see your new users:

```sql title="SQL Editor"
SELECT * FROM neon_auth.user;
```
:::
:::::

## Next steps

- [Add email verification](/guides/auth-guides-email-verification)
- [Learn how to branch your auth](/guides/postgres-auth-branching-authentication)
- [More example apps](/guides/auth-index#example-applications) in the **neon-js** `examples/` directory

## Related pages

- [Use Managed Better Auth with Next.js (API methods)](./auth-quick-start-nextjs-api-only.md)
- [Use Managed Better Auth with React (API methods)](./auth-quick-start-react.md)

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