Clerk Core Workflow B: Session & Middleware

Overview

Implement session management and route protection with Clerk middleware. Covers clerkMiddleware() configuration, auth() patterns, custom session claims, JWT templates for external services, organization-scoped sessions, and session token v2.

Use when managing user sessions, configuring route protection, or implementing token refresh and custom JWT templates.

Prerequisites

• @clerk/nextjs installed with ClerkProvider wrapping the app
• Next.js 14+ with App Router (or adapt patterns for your stack)
• Working publishable + secret Clerk keys in env

Instructions