clerk-auth

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

Install with Tessl CLI

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

What are skills?

0.98x

Quality

48%

Does it follow best practices?

Impact

98%

0.98x

Average score across 6 eval scenarios

Optimize this skill with Tessl

npx tessl skill review --optimize ./skills/clerk-auth/SKILL.md

SKILL.md

Review

Evals

Evaluation results

100%

Add Authentication to a Next.js 14 SaaS Starter

Next.js Clerk app bootstrap

Criteria

Without context

With context

ClerkProvider wraps app

100%

SignIn component used

100%

SignUp component used

100%

UserButton component used

100%

NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY referenced

100%

CLERK_SECRET_KEY referenced

100%

@clerk/nextjs import

100%

clerkMiddleware export

100%

No custom auth forms

100%

App Router structure

100%

Without context: $0.3152 · 1m 26s · 21 turns · 28 in / 4,968 out tokens

With context: $0.5032 · 1m 31s · 30 turns · 34 in / 6,000 out tokens

95%

-5%

Secure a Multi-Section Next.js Application with Route-Level Access Control

Middleware route protection

Criteria

Without context

With context

Single middleware.ts at root

100%

createRouteMatcher used

100%

auth.protect() called

100%

clerkMiddleware export

100%

All auth logic in middleware

100%

Public routes defined

100%

50%

Protected routes defined

100%

matcher config present

100%

No page-level auth duplication

100%

Without context: $0.1724 · 48s · 13 turns · 20 in / 2,684 out tokens

With context: $0.3892 · 1m 17s · 26 turns · 357 in / 4,126 out tokens

100%

Build a Personalized Server-Rendered Dashboard for a Project Management App

Server component auth access

Criteria

Without context

With context

auth() used for userId/session

100%

currentUser() used for profile data

100%

auth() and currentUser() not swapped

100%

clerkMiddleware prerequisite noted

100%

Server Component import path

100%

No client-side auth in server files

100%

Unauthenticated case handled

100%

middleware.ts present

100%

async/await on currentUser

100%

Without context: $0.5793 · 2m 36s · 28 turns · 33 in / 9,110 out tokens

With context: $0.5181 · 1m 42s · 30 turns · 146 in / 6,860 out tokens

Evaluated: 3 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Add Authentication to a Next.js 14 SaaS Starter Secure a Multi-Section Next.js Application with Route-Level Access Control Build a Personalized Server-Rendered Dashboard for a Project Management App

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