@auth0/nextjs-auth0
v4.0.1
Published
Auth0 Next.js SDK
Downloads
932,346
Maintainers
Readme
The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications.
📚 Documentation - 🚀 Getting Started - 💬 Feedback
Documentation
- QuickStart- our guide for adding Auth0 to your Next.js app.
- Examples - lots of examples for your different use cases.
- Security - Some important security notices that you should check.
- Docs Site - explore our docs site and learn more about Auth0.
Getting Started
1. Install the SDK
npm i @auth0/nextjs-auth0
This library requires Node.js 20 LTS and newer LTS versions.
2. Add the environment variables
Add the following environment variables to your .env.local
file:
AUTH0_DOMAIN=
AUTH0_CLIENT_ID=
AUTH0_CLIENT_SECRET=
AUTH0_SECRET=
APP_BASE_URL=
The AUTH0_DOMAIN
, AUTH0_CLIENT_ID
, and AUTH0_CLIENT_SECRET
can be obtained from the Auth0 Dashboard once you've created an application. This application must be a Regular Web Application
.
The AUTH0_SECRET
is the key used to encrypt the session and transaction cookies. You can generate a secret using openssl
:
openssl rand -hex 32
The APP_BASE_URL
is the URL that your application is running on. When developing locally, this is most commonly http://localhost:3000
.
[!IMPORTANT]
You will need to register the follwing URLs in your Auth0 Application via the Auth0 Dashboard:
- Add
http://localhost:3000/auth/callback
to the list of Allowed Callback URLs- Add
http://localhost:3000
to the list of Allowed Logout URLs
3. Create the Auth0 SDK client
Create an instance of the Auth0 client. This instance will be imported and used in anywhere we need access to the authentication methods on the server.
Add the following contents to a file named lib/auth0.ts
:
import { Auth0Client } from "@auth0/nextjs-auth0/server"
export const auth0 = new Auth0Client()
4. Add the authentication middleware
Create a middleware.ts
file in the root of your project's directory:
import type { NextRequest } from "next/server"
import { auth0 } from "./lib/auth0"
export async function middleware(request: NextRequest) {
return await auth0.middleware(request)
}
export const config = {
matcher: [
/*
* Match all request paths except for the ones starting with:
* - _next/static (static files)
* - _next/image (image optimization files)
* - favicon.ico, sitemap.xml, robots.txt (metadata files)
*/
"/((?!_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt).*)",
],
}
[!NOTE]
If you're using asrc/
directory, themiddleware.ts
file must be created inside thesrc/
directory.
You can now begin to authenticate your users by redirecting them to your application's /auth/login
route:
import { auth0 } from "@/lib/auth0"
export default async function Home() {
const session = await auth0.getSession()
if (!session) {
return (
<main>
<a href="/auth/login?screen_hint=signup">Sign up</a>
<a href="/auth/login">Log in</a>
</main>
)
}
return (
<main>
<h1>Welcome, {session.user.name}!</h1>
</main>
)
}
[!IMPORTANT]
You must use<a>
tags instead of the<Link>
component to ensure that the routing is not done client-side as that may result in some unexpected behavior.
Customizing the client
You can customize the client by using the options below:
| Option | Type | Description |
| --------------------------- | ------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| domain | string
| The Auth0 domain for the tenant (e.g.: example.us.auth0.com
or https://example.us.auth0.com
). If it's not specified, it will be loaded from the AUTH0_DOMAIN
environment variable. |
| clientId | string
| The Auth0 client ID. If it's not specified, it will be loaded from the AUTH0_CLIENT_ID
environment variable. |
| clientSecret | string
| The Auth0 client secret. If it's not specified, it will be loaded from the AUTH0_CLIENT_SECRET
environment variable. |
| authorizationParameters | AuthorizationParameters
| The authorization parameters to pass to the /authorize
endpoint. See Passing authorization parameters for more details. |
| clientAssertionSigningKey | string
or CryptoKey
| Private key for use with private_key_jwt
clients. This can also be specified via the AUTH0_CLIENT_ASSERTION_SIGNING_KEY
environment variable. |
| clientAssertionSigningAlg | string
| The algorithm used to sign the client assertion JWT. This can also be provided via the AUTH0_CLIENT_ASSERTION_SIGNING_ALG
environment variable. |
| appBaseUrl | string
| The URL of your application (e.g.: http://localhost:3000
). If it's not specified, it will be loaded from the APP_BASE_URL
environment variable. |
| secret | string
| A 32-byte, hex-encoded secret used for encrypting cookies. If it's not specified, it will be loaded from the AUTH0_SECRET
environment variable. |
| signInReturnToPath | string
| The path to redirect the user to after successfully authenticating. Defaults to /
. |
| session | SessionConfiguration
| Configure the session timeouts and whether to use rolling sessions or not. See Session configuration for additional details. |
| beforeSessionSaved | BeforeSessionSavedHook
| A method to manipulate the session before persisting it. See beforeSessionSaved for additional details. |
| onCallback | OnCallbackHook
| A method to handle errors or manage redirects after attempting to authenticate. See onCallback for additional details. |
| sessionStore | SessionStore
| A custom session store implementation used to persist sessions to a data store. See Database sessions for additional details. |
| pushedAuthorizationRequests | boolean
| Configure the SDK to use the Pushed Authorization Requests (PAR) protocol when communicating with the authorization server. |
| routes | Routes
| Configure the paths for the authentication routes. See Custom routes for additional details. |
| allowInsecureRequests | boolean
| Allow insecure requests to be made to the authorization server. This can be useful when testing with a mock OIDC provider that does not support TLS, locally. This option can only be used when NODE_ENV
is not set to production
. |
| httpTimeout | number
| Integer value for the HTTP timeout in milliseconds for authentication requests. Defaults to 5000
milliseconds |
| enableTelemetry | boolean
| Boolean value to opt-out of sending the library name and version to your authorization server via the Auth0-Client
header. Defaults to true
. |
Routes
The SDK mounts 6 routes:
/auth/login
: the login route that the user will be redirected to to start a initiate an authentication transaction/auth/logout
: the logout route that must be addedto your Auth0 application's Allowed Logout URLs/auth/callback
: the callback route that must be addedto your Auth0 application's Allowed Callback URLs/auth/profile
: the route to check the user's session and return their attributes/auth/access-token
: the route to check the user's session and return an access token (which will be automatically refreshed if a refresh token is available)/auth/backchannel-logout
: the route that will receive alogout_token
when a configured Back-Channel Logout initiator occurs
Feedback
Contributing
We appreciate feedback and contribution to this repo! Before you get started, please read the following:
- Auth0's general contribution guidelines
- Auth0's code of conduct guidelines
- This repo's contribution guide
Raise an issue
To provide feedback or report a bug, please raise an issue on our issue tracker.
Vulnerability Reporting
Please do not report security vulnerabilities on the public GitHub issue tracker. The Responsible Disclosure Program details the procedure for disclosing security issues.