Clerk Has a Free API — Drop-in Authentication with User Management for React

What if adding authentication to your React app took 5 minutes — with sign-up, login, user profiles, organizations, and MFA all included? Clerk is a complete user management platform with embeddable UI components and a powerful backend API. Why Clerk Pre-built components — SignIn, SignUp, UserProfile, OrganizationSwitcher Multiple auth methods — email, social OAuth, passkeys, MFA Organizations — multi-tenant support with roles and permissions Webhooks — sync user data to your database automatically Session management — JWT-based, works with any backend Free tier — 10,000 monthly active users Quick Start with Next.js npm install @clerk/nextjs // app/layout.tsx import { ClerkProvider } from " @clerk/nextjs " ; export default function RootLayout ({ children }) { return ( < ClerkProvider > < html >< body > { children } </ body ></ html > </ ClerkProvider > ); } // app/page.tsx import { SignedIn , SignedOut , SignInButton , UserButton } from " @clerk/nextjs " ; export default function Home