Clerk Has a Free API: Add Authentication to Your App in 10 Minutes

What is Clerk? Clerk is a complete authentication and user management platform. Drop-in sign-up, sign-in, user profiles, organizations, and multi-factor auth — all with pre-built UI components that look professional out of the box. Why Clerk? Free tier — 10,000 monthly active users Pre-built UI — sign-in/sign-up components that work immediately 10 minutes setup — not 10 hours like Auth0/Cognito Multi-tenant — organizations with roles and permissions built in Session management — JWT tokens, middleware, server-side auth Social login — Google, GitHub, Apple, 20+ providers Quick Start (Next.js) npm install @clerk/nextjs // middleware.ts — protect your entire app import { clerkMiddleware } from ' @clerk/nextjs/server ' ; export default clerkMiddleware (); export const config = { matcher : [ ' /((?!.* \\ ..*|_next).*) ' , ' / ' , ' /(api|trpc)(.*) ' ] }; // app/layout.tsx — wrap your app import { ClerkProvider , SignInButton , SignedIn , SignedOut , UserButton } from ' @clerk/nextjs ' ; exp