Assembling...
Clerk provides a complete authentication and user management solution with prebuilt React components for sign-in, sign-up, and user profiles. It supports social OAuth, passwordless login, multi-factor authentication, and organization management. Clerk handles session management, JWT tokens, and middleware integration for Next.js, Remix, and other frameworks.
Add complete sign-in, sign-up, and user profile management to a SaaS application in under an hour with Clerk's prebuilt React components and Next.js middleware.
Implement organization-based access control with Clerk Organizations, allowing users to create teams, invite members, and assign roles with built-in UI.
Secure API routes and server-side data fetching using Clerk's auth() helper and middleware, with automatic JWT verification and user context injection.
import { auth, currentUser } from "@clerk/nextjs/server";import { NextResponse } from "next/server";export async function GET() {const { userId } = await auth();if (!userId) {return NextResponse.json({ error: "Unauthorized" }, { status: 401 });}const user = await currentUser();return NextResponse.json({id: userId,email: user?.emailAddresses[0]?.emailAddress,name: user?.firstName,org: user?.organizationMemberships?.[0]?.organization.name,});}
Seamless integration, great documentation. Set up in under 10 minutes.
2 days ago
Works well for our use case. Would love to see more webhook event types.
1 week ago
Excellent compliance coverage. HIPAA audit trail works perfectly.
2 weeks ago
| Key | Description | Example |
|---|---|---|
| NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY | Publishable key for client-side Clerk components | pk_test_your_key_here |
| CLERK_SECRET_KEY | Secret key for server-side Clerk API calls | sk_test_your_key_here |
Clerk is a drop-in authentication platform that provides prebuilt UI components, session management, and user administration for modern web applications. It dramatically reduces auth implementation time with React components for sign-in/sign-up, built-in organization management, and deep Next.js integration. The best choice when you want production auth without building it from scratch.