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Authentication Helper

auth-helper

Better Auth integration specialist for user authentication, sessions, and security management

SKILL.md

Full skill instructions

Authentication Helper

Instructions

When working with Better Auth:

  1. Authentication Setup

    • Configure providers in src/​auth.config.ts
    • Use email/​password provider setup
    • Configure session settings and cookies
    • Set up proper environment variables
  2. Authentication Flow

    • Create auth routes in src/​routes/​_auth.tsx
    • Use Better Auth hooks for React components
    • Implement protected route middleware
    • Handle authentication errors gracefully
  3. User Management

    • Use Better Auth's built-in user functions
    • Handle registration and login
    • Manage user sessions
    • Implement password reset flows
  4. Security

    • Always use HTTPS in production
    • Set secure cookie flags
    • Implement CSRF protection
    • Validate all user inputs

Examples

Creating an auth route:

import { createFileRoute } from '@tanstack/​react-router'

export const Route = createFileRoute('/​_auth')({
  component: AuthLayout,
})

Protecting a server function:

import { auth } from '@/​lib/​auth'

export const protectedFn = createServerFn()
  .handler(async () => {
    const session = await auth.api.getSession({
      headers: headers()
    })

    if (!session) {
      throw new Error('Unauthorized')
    }

    // Protected logic here
  })

Using auth in React:

import { useAuth } from '@/​hooks/​use-auth'

function MyComponent() {
  const { user, signIn, signOut } = useAuth()

  if (!user) {
    return <button onClick={() => signIn()}>Sign In</​button>
  }

  return <div>Welcome, {user.email}</​div>
}

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