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clerk-auth

tessl install github:sickn33/antigravity-awesome-skills --skill clerk-auth

github.com/sickn33/antigravity-awesome-skills

Expert patterns for Clerk auth implementation, middleware, organizations, webhooks, and user sync Use when: adding authentication, clerk auth, user authentication, sign in, sign up.

Review Score

56%

Validation Score

11/16

Implementation Score

27%

Activation Score

82%

Clerk Authentication

Patterns

Next.js App Router Setup

Complete Clerk setup for Next.js 14/15 App Router.

Includes ClerkProvider, environment variables, and basic sign-in/sign-up components.

Key components:

  • ClerkProvider: Wraps app for auth context
  • <SignIn />, <SignUp />: Pre-built auth forms
  • <UserButton />: User menu with session management

Middleware Route Protection

Protect routes using clerkMiddleware and createRouteMatcher.

Best practices:

  • Single middleware.ts file at project root
  • Use createRouteMatcher for route groups
  • auth.protect() for explicit protection
  • Centralize all auth logic in middleware

Server Component Authentication

Access auth state in Server Components using auth() and currentUser().

Key functions:

  • auth(): Returns userId, sessionId, orgId, claims
  • currentUser(): Returns full User object
  • Both require clerkMiddleware to be configured

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