neon-auth-react

name	neon-auth-react
description	Sets up Neon Auth in React applications (Vite, CRA). Configures authentication adapters, creates auth client, and sets up UI components. Use when adding auth-only to React apps (no database needed).
allowed-tools	["Bash","Write","Read","Edit","Glob","Grep"]

Neon Auth for React

Help developers set up @neondatabase/auth (authentication only, no database) in React applications with Vite, Create React App, or similar bundlers.

When to Use

Use this skill when:

• Setting up auth-only in React (no database needed)
• User already has a database solution
• User mentions "@neondatabase/auth" without "neon-js"
• User is NOT using Next.js (use neon-auth-nextjs skill for Next.js)

Critical Rules

1. Adapter Factory Pattern: Always call adapters with () - they are factory functions
2. React Adapter Import: Use subpath @neondatabase/auth/react/adapters
3. createAuthClient takes URL as first arg: createAuthClient(url, config)
4. CSS Import: Choose ONE - either /ui/css OR /ui/tailwind, never both

Setup

1. Install

npm install @neondatabase/auth

2. Create Client (src/auth-client.ts)

import { createAuthClient } from '@neondatabase/auth';
import { BetterAuthReactAdapter } from '@neondatabase/auth/react/adapters';

export const authClient = createAuthClient(
  import.meta.env.VITE_AUTH_URL,
  {
    adapter: BetterAuthReactAdapter(),
    // allowAnonymous: true, // Enable for RLS access without login
  }
);

3. Create Provider (src/providers.tsx)

import { NeonAuthUIProvider } from '@neondatabase/auth/react/ui';
import { useNavigate } from 'react-router-dom';
import { Link } from 'react-router-dom';
import { authClient } from './auth-client';

// Import CSS (choose one)
import '@neondatabase/auth/ui/css';

export function Providers({ children }: { children: React.ReactNode }) {
  const navigate = useNavigate();

  return (
    <NeonAuthUIProvider
      authClient={authClient}
      navigate={navigate}
      redirectTo="/dashboard"
      Link={({ children, href }) => <Link to={href}>{children}</Link>}
    >
      {children}
    </NeonAuthUIProvider>
  );
}

4. Wrap App (src/main.tsx)

import { BrowserRouter } from 'react-router-dom';
import { Providers } from './providers';
import App from './App';

ReactDOM.createRoot(document.getElementById('root')!).render(
  <BrowserRouter>
    <Providers>
      <App />
    </Providers>
  </BrowserRouter>
);

---

CSS & Styling

Import Options

Without Tailwind (pre-built CSS bundle ~47KB):

/* In your main CSS file or import in provider */
@import '@neondatabase/auth/ui/css';

With Tailwind CSS v4:

@import 'tailwindcss';
@import '@neondatabase/auth/ui/tailwind';

IMPORTANT: Never import both - causes duplicate styles.

Dark Mode

The provider includes next-themes for dark mode. Control via defaultTheme prop:

<NeonAuthUIProvider
  authClient={authClient}
  defaultTheme="system" // 'light' | 'dark' | 'system'
  // ...
>

Custom Theming

Override CSS variables in your stylesheet:

:root {
  --primary: oklch(0.7 0.15 250);
  --primary-foreground: oklch(0.98 0 0);
  --background: oklch(1 0 0);
  --foreground: oklch(0.1 0 0);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.1 0 0);
  --border: oklch(0.9 0 0);
  --input: oklch(0.9 0 0);
  --ring: oklch(0.7 0 0);
  --radius: 0.5rem;
  /* See theme.css for full list */
}

.dark {
  --background: oklch(0.15 0 0);
  --foreground: oklch(0.98 0 0);
  /* Dark mode overrides */
}

---

NeonAuthUIProvider Props

Full configuration options:

<NeonAuthUIProvider
  // Required
  authClient={authClient}

  // Navigation (required for React Router)
  navigate={navigate}           // Router's navigate function
  Link={({href, children}) => <Link to={href}>{children}</Link>}                   // Router's Link component
  redirectTo="/dashboard"       // Where to redirect after auth

  // Social/OAuth Providers
  social={{
    providers: ['google'],
  }}

  // Feature Flags
  emailOTP={true}               // Enable email OTP sign-in
  emailVerification={true}      // Require email verification
  magicLink={false}             // Magic link (disabled by default)
  multiSession={false}          // Multiple sessions (disabled)

  // Credentials Configuration
  credentials={{
    forgotPassword: true,       // Show forgot password link
  }}

  // Sign Up Fields
  signUp={{
    fields: ['name'],           // Additional fields: 'name', 'username', etc.
  }}

  // Account Settings Fields
  account={{
    fields: ['image', 'name', 'company', 'age', 'newsletter'],
  }}

  // Avatar Configuration
  avatar={{
    size: 256,
    extension: 'webp',
  }}

  // Organization Features
  organization={{}}             // Enable org features

  // Dark Mode
  defaultTheme="system"         // 'light' | 'dark' | 'system'

  // Custom Labels
  localization={{
    SIGN_IN: 'Welcome Back',
    SIGN_IN_DESCRIPTION: 'Sign in to your account',
    SIGN_UP: 'Create Account',
    SIGN_UP_DESCRIPTION: 'Join us today',
    FORGOT_PASSWORD: 'Forgot Password?',
    OR_CONTINUE_WITH: 'or continue with',
    // See better-auth-ui docs for full list
  }}
>
  {children}
</NeonAuthUIProvider>

---

UI Components

AuthView - Main Auth Interface

Handles sign-in, sign-up, forgot password, and callback routes:

import { AuthView } from '@neondatabase/auth/react/ui';

// Route: /auth/:pathname
function AuthPage() {
  const { pathname } = useParams(); // 'sign-in', 'sign-up', 'forgot-password', etc.

  return <AuthView pathname={pathname} />;
}

Supported pathnames: sign-in, sign-up, forgot-password, reset-password, callback, sign-out

Conditional Rendering

import {
  SignedIn,
  SignedOut,
  AuthLoading,
  RedirectToSignIn
} from '@neondatabase/auth/react/ui';

function MyPage() {
  return (
    <>
      {/* Show while checking auth state */}
      <AuthLoading>
        <LoadingSpinner />
      </AuthLoading>

      {/* Show only when authenticated */}
      <SignedIn>
        <Dashboard />
      </SignedIn>

      {/* Show only when NOT authenticated */}
      <SignedOut>
        <LandingPage />
      </SignedOut>

      {/* Redirect to sign-in if not authenticated */}
      <RedirectToSignIn />
    </>
  );
}

UserButton

Dropdown menu with user avatar, name, and sign-out:

import { UserButton } from '@neondatabase/auth/react/ui';

function Header() {
  return (
    <header>
      <nav>...</nav>
      <UserButton />
    </header>
  );
}

Account Management Components

import {
  AccountSettingsCards,   // Profile info (avatar, name, email)
  SecuritySettingsCards,  // Security options (linked accounts)
  SessionsCard,           // Active sessions management
  ChangePasswordCard,     // Password change form
  ChangeEmailCard,        // Email change form
  DeleteAccountCard,      // Account deletion
  ProvidersCard,          // Linked OAuth providers
} from '@neondatabase/auth/react/ui';

function AccountPage() {
  const { view } = useParams(); // 'settings', 'security', 'sessions'

  return (
    <>
      <RedirectToSignIn />
      <SignedIn>
        {view === 'settings' && <AccountSettingsCards />}
        {view === 'security' && (
          <>
            <ChangePasswordCard />
            <SecuritySettingsCards />
          </>
        )}
        {view === 'sessions' && <SessionsCard />}
      </SignedIn>
    </>
  );
}

Organization Components

import {
  OrganizationSwitcher,       // Switch between orgs
  OrganizationSettingsCards,  // Org settings
  OrganizationMembersCard,    // Member management
  AcceptInvitationCard,       // Accept org invite
} from '@neondatabase/auth/react/ui';

---

Adapter Options

BetterAuthReactAdapter (Recommended for React)

Native Better Auth API with React hooks:

import { BetterAuthReactAdapter } from '@neondatabase/auth/react/adapters';

const authClient = createAuthClient(url, {
  adapter: BetterAuthReactAdapter(),
});

// Methods
await authClient.signIn.email({ email, password });
await authClient.signUp.email({ email, password, name });
await authClient.signIn.social({ provider: 'google', callbackURL: '/dashboard' });
await authClient.signOut();
const session = await authClient.getSession();

// React Hook
const { data, isPending, error } = authClient.useSession();

SupabaseAuthAdapter (Supabase-compatible API)

For migrating from Supabase or familiar API:

import { SupabaseAuthAdapter } from '@neondatabase/auth/vanilla/adapters';

const authClient = createAuthClient(url, {
  adapter: SupabaseAuthAdapter(),
});

// Supabase-style methods
await authClient.signUp({ email, password, options: { data: { name } } });
await authClient.signInWithPassword({ email, password });
await authClient.signInWithOAuth({ provider: 'google', options: { redirectTo } });
await authClient.signOut();
const { data: session } = await authClient.getSession();

// Event listener
authClient.onAuthStateChange((event, session) => {
  console.log(event); // 'SIGNED_IN', 'SIGNED_OUT', 'TOKEN_REFRESHED', 'USER_UPDATED'
});

BetterAuthVanillaAdapter (Non-React)

For vanilla JS/TS without React hooks:

import { BetterAuthVanillaAdapter } from '@neondatabase/auth/vanilla/adapters';

const authClient = createAuthClient(url, {
  adapter: BetterAuthVanillaAdapter(),
});

// Same API as BetterAuthReactAdapter, but no useSession() hook

---

Social/OAuth Providers

Configuration

Enable providers in NeonAuthUIProvider:

<NeonAuthUIProvider
  social={{
    providers: ['google'],
  }}
>

Programmatic OAuth Sign-In

// BetterAuth API
await authClient.signIn.social({
  provider: 'google',
  callbackURL: '/dashboard',
  scopes: ['email', 'profile'], // Optional
});

// Supabase API
await authClient.signInWithOAuth({
  provider: 'google',
  options: {
    redirectTo: '/dashboard',
    scopes: 'email profile',
  },
});

Supported Providers

google, github, twitter, discord, apple, microsoft, facebook, linkedin, spotify, twitch, gitlab, bitbucket

OAuth in Iframes

OAuth automatically uses popup flow when running in iframes (due to X-Frame-Options restrictions). No configuration needed.

---

Session Hook