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Security · Backend / AGENT SKILL

clerk-auth

AxelMrak/ai
0 installs 5 GitHub stars
0

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

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The full skill.

Original instructions from the publisher’s SKILL.md

# 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


## ⚠️ Sharp Edges

| Issue | Severity | Solution |
|-------|----------|----------|
| Issue | critical | See docs |
| Issue | high | See docs |
| Issue | high | See docs |
| Issue | high | See docs |
| Issue | medium | See docs |
| Issue | medium | See docs |
| Issue | medium | See docs |
| Issue | medium | See docs |

Skill folder

Files included alongside SKILL.md in the publisher’s repository.