Next.js Authentication

Login, middleware route protection, sessions, and user management in your Next.js app. Paste one prompt into your AI agent, or wire it yourself with one middleware export and one provider component.

Quickstart in minutes

Enterprise-grade & compliant by default

Add auth to my Next.js app using The Bridge.

Your Next.js app, wired in

Middleware wiredwithBridgeAuth in middleware.ts guards every route; you list what is public.
Routes locked by defaultdefaultAccess: 'protected' means new routes are born protected.
Sessions handledSigned tokens issued, verified, and renewed for you.
One clean user objectPlan, roles, and feature flags ride the same user.

The fastest way to integrate

Auth by asking.

The Bridge is agent-native. Install the Bridge CLI, paste one prompt, and your coding agent wires authentication into your Next.js app.

✦ CLI-nativeClaude CodeCursorAny coding agent

Your agent does the wiring, you ship the product

Install the Bridge CLI, then paste the prompt below into your agent. It authorizes the CLI in your browser (creating your account right there if you are new), detects Next.js, installs the SDK, wires the middleware, and registers the settings your app needs.

Prefer to wire it yourself? See the SDK and CLI paths below.

Why The Bridge for Next.js

Everything after login, already there

The login form is the visible part. The wins are everything you no longer have to build behind it.

Every sign-in method

Email, passkeys, magic link, and Google, toggled from the Control Center with no redeploy.
UX
Routes locked by default

Public routes are declared in your middleware rules; everything else needs a session first.
Security
Enterprise SSO ready

When the security questionnaire arrives, connect their identity provider and keep your architecture.
Enterprise
Authorization built in

Roles, plan, and feature flags ride the same user object, and middleware rules can gate routes by feature flag.
RBAC
Built for teams

Multi-tenant user management out of the box: workspaces, invites, and roles included.
B2B
Session management

Sessions issued, renewed, and revoked centrally. Block a user and they are out on the next request.
Control
MFA included

Multi-factor authentication ships with the platform, no extra vendor to integrate.
Trust
API tokens for machines

External services and scripted callers authenticate with API tokens you can revoke at any time.
M2M

Prefer to wire it yourself?

Pick the workflow that matches how you build.

SDK

// middleware.ts
import { withBridgeAuth } from '@nebulr-group/bridge-nextjs/server';

export default withBridgeAuth({
  rules: [{ match: '/', public: true }],
  defaultAccess: 'protected',
});

// app/layout.tsx
import { BridgeProvider } from '@nebulr-group/bridge-nextjs/client';

Read the full quickstart in the docs →

And of course

First-class SDKs for every stack

Type-safe, batteries-included SDKs with drop-in components, and the same clean user object everywhere.

Next.js

Svelte

Astro

Node

FastAPI

Laravel

Flutter

React

Angular

Nuxt

Deno

Python

Rust

Ruby

Kotlin

Vue

SolidJS

Remix

Bun

Django

PHP

.NET

NestJS

…and 24+ frameworks & languages supported. Hover to pause, drag or swipe to explore.

Check out our Next.js SDK on GitHub

Hand-Rolled Next.js Authentication vs. The Bridge

What a hand-built Next.js auth stack actually costs you, versus one middleware export.

Building it yourself

Write middleware, session cookies, and a token refresh flow yourself
Implement providers, callbacks, and session storage for every sign-in method
Store tokens safely and handle renewal and revocation
Add SSO, more sign-in methods, and user management when customers ask

With The Bridge

One middleware export, routes locked by default
Login hosted for you or dropped into your UI, no provider config
Sessions issued, verified, and renewed for you
SSO and multi-tenant user management on the same user object

Common questions

How do I protect routes with Next.js middleware?

With The Bridge your middleware file exports one call from the SDK with a short list of public routes; everything else requires login by default. Every route you add after that is born protected, so nobody can forget to guard one. The route guards docs show the exact setup.

Does this work with the App Router?

Yes, the SDK is built for the App Router: the provider wraps your root layout, and the OAuth callback is a route handler you create with one SDK helper. The Next.js quickstart walks through both files.

Does this use JWT authentication?

Yes. Sessions are standard signed JSON Web Tokens issued by The Bridge and verified against published public keys, so your own backend can verify them too. In the hosted flow the callback stores them in cookies that your middleware reads on every request. To see what lives inside a token, read JWT authentication explained.

Can I use this instead of building on NextAuth (Auth.js)?

Yes. The Bridge moves the machinery out of your repo: sign-in methods, session issuing, and user management run on the platform, so there are no provider configs, callback implementations, or session adapters to write. Your app keeps one middleware export and one provider component, and the login can be hosted or built into your own UI with the SDK components.

How do I add OAuth and social login to my Next.js app?

With The Bridge it is a click away: turn providers on in the Control Center and the hosted login shows them immediately, with no code changes or redeploys in your Next.js app. The OpenID Connect flow runs on the hosted side, so your code never touches the handshake.

How do I add enterprise SSO to a Next.js app?

The same way you add social login: enable the customer's identity provider in the Control Center, per customer, and the hosted login handles the rest. Your Next.js code does not change; the user comes back with the same session and user object. Full walkthroughs: Microsoft Entra ID SSO and SAML SSO.

How do I handle authorization and roles in Next.js?

This is where The Bridge does the heavy lifting: authorization is embedded in the platform. Configure roles and permissions in the Control Center and they arrive inside the signed token, as claims on the same user object your login returns. Middleware rules can also gate whole routes by feature flag, so plan-based access lives in the same file as auth. The roles docs cover the setup end to end.

Which Next.js versions does the SDK support?

The published @nebulr-group/bridge-nextjs 0.4.x line supports Next.js 15 and 16. Check the Next.js quickstart for the currently supported range before adding it to a newer project.

Does my Next.js app need its own auth backend?

No, you do not need to build one. The Bridge hosts the login, issues the session, and manages users. Your middleware and route handlers only verify the signed token they receive, which is the part Next.js is already good at.