clerk-install-auth

Install and configure Clerk SDK/CLI authentication. Use when setting up a new Clerk integration, configuring API keys, or initializing Clerk in your project. Trigger with phrases like "install clerk", "setup clerk", "clerk auth", "configure clerk API key", "add clerk to project".

Zur Installation springen

Repository: jeremylongshore/tons-of-skills-marketplace
Letzte Quellaktivität: 19. August 2026 um 12:13
Erkannte Sprache von SKILL.md: Englisch
Sterne: 2.677
Forks: 392

Installationsoptionen

Standardmäßig ist der Prompt ausgewählt, der zuerst die Quelle prüft. Sie können zu einem direkten Befehl wechseln oder eine lokale Kopie herunterladen.

Quelldateien prüfen

Lesen Sie SKILL.md und alle von SkillsMP angezeigten Begleitdateien, bevor Sie sich für eine Installation entscheiden.

Zurück zur Suche Zurück zur Installation

name	clerk-install-auth
description	Install and configure Clerk SDK/CLI authentication. Use when setting up a new Clerk integration, configuring API keys, or initializing Clerk in your project. Trigger with phrases like "install clerk", "setup clerk", "clerk auth", "configure clerk API key", "add clerk to project".
allowed-tools	Read, Write, Edit, Bash(npm:), Bash(pnpm:), Grep
version	1.14.0
license	MIT
author	Jeremy Longshore <jeremy@intentsolutions.io>
tags	["saas","clerk","api","authentication"]
compatibility	Designed for Claude Code

Clerk Install & Auth

Overview

Set up Clerk SDK and configure authentication for Next.js, React, or Express. This skill covers SDK installation, environment variables, ClerkProvider, middleware, and initial auth verification.

Prerequisites

Node.js 18+
Package manager (npm, pnpm, or yarn)
Clerk account at dashboard.clerk.com
Publishable Key (pk_test_*) and Secret Key (sk_test_*) from Clerk Dashboard > API Keys

Instructions

Step 1: Install SDK for Your Framework

set -euo pipefail
# Next.js (App Router or Pages Router)
npm install @clerk/nextjs

# React SPA (Vite, CRA, etc.)
npm install @clerk/clerk-react

# Express / Node.js backend
npm install @clerk/express

# Backend-only (Cloudflare Workers, serverless, etc.)
npm install @clerk/backend

Step 2: Configure Environment Variables

# .env.local — never commit this file
NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY=pk_test_...
CLERK_SECRET_KEY=sk_test_...

# Optional: routing URLs
NEXT_PUBLIC_CLERK_SIGN_IN_URL=/sign-in
NEXT_PUBLIC_CLERK_SIGN_UP_URL=/sign-up
NEXT_PUBLIC_CLERK_AFTER_SIGN_IN_URL=/dashboard
NEXT_PUBLIC_CLERK_AFTER_SIGN_UP_URL=/onboarding

Ensure .env.local is in .gitignore:

echo ".env.local" >> .gitignore

Step 3: Add ClerkProvider (Next.js App Router)

// app/layout.tsx
import { ClerkProvider, SignInButton, SignedIn, SignedOut, UserButton } from '@clerk/nextjs'
import './globals.css'

export default function RootLayout() {
   (
    
  )
}

// middleware.ts (project root, NOT inside app/ or src/app/)
import { clerkMiddleware, createRouteMatcher } from '@clerk/nextjs/server'

// Define which routes should be publicly accessible
const isPublicRoute = createRouteMatcher([
  '/',
  '/sign-in(.*)',
  '/sign-up(.*)',
  '/api/webhooks(.*)',
])

export default clerkMiddleware(async (auth, req) => {
  if (!isPublicRoute(req)) {
    await auth.protect()
  }
})

export const config = {
  matcher: [
    // Skip Next.js internals and static files
    '/((?!_next|[^?]*\\.(?:html?|css|js(?!on)|jpe?g|webp|png|gif|svg|ttf|woff2?|ico|csv|docx?|xlsx?|zip|webmanifest)).*)',
    // Always run for API routes
    '/(api|trpc)(.*)',
  ],
}

// app/sign-in/[[...sign-in]]/page.tsx
import { SignIn } from '@clerk/nextjs'

export default function SignInPage() {
  return (
    <div className="flex min-h-screen items-center justify-center">
      <SignIn />
    </div>
  )
}

// app/sign-up/[[...sign-up]]/page.tsx
import { SignUp } from '@clerk/nextjs'

export default function SignUpPage() {
  return (
    <div className="flex min-h-screen items-center justify-center">
      <SignUp />
    </div>
  )
}

// app/api/health/route.ts
import { auth } from '@clerk/nextjs/server'

export async function GET() {
  const { userId } = await auth()
  return Response.json({
    clerkConnected: true,
    authenticated: !!userId,
    userId: userId || null,
  })
}

// src/main.tsx
import { ClerkProvider } from '@clerk/clerk-react'
import App from './App'

const PUBLISHABLE_KEY = import.meta.env.VITE_CLERK_PUBLISHABLE_KEY

if (!PUBLISHABLE_KEY) {
  throw new Error('Missing VITE_CLERK_PUBLISHABLE_KEY in .env')
}

ReactDOM.createRoot(document.getElementById('root')!).render(
  <ClerkProvider publishableKey={PUBLISHABLE_KEY}>
    <App />
  </ClerkProvider>
)

// server.ts
import express from 'express'
import { clerkMiddleware, requireAuth, getAuth } from '@clerk/express'

const app = express()

// Apply Clerk middleware globally — attaches auth to all requests
app.use(clerkMiddleware())

// Public route
app.get('/api/health', (req, res) => {
  res.json({ status: 'ok' })
})

// Protected route — redirects unauthenticated requests
app.get('/api/profile', requireAuth(), (req, res) => {
  const { userId } = getAuth(req)
  res.json({ userId })
})

app.listen(3001, () => console.log('Server running on :3001'))

Error	Cause	Solution
`Missing publishableKey`	Env var not set	Add `NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY` to `.env.local`
`ClerkProvider must wrap your application`	Hook used outside provider	Ensure `ClerkProvider` wraps root layout
`auth() was called but Clerk can't detect clerkMiddleware()`	Middleware not running	Place `middleware.ts` at project root, check matcher
`Module not found: @clerk/nextjs`	Package not installed	Run `npm install @clerk/nextjs`
500 error on all pages	`CLERK_SECRET_KEY` missing or wrong	Verify key prefix matches environment (`sk_test_` for dev)

User: Install Clerk auth from zero on this Next.js repo.
Skill: adds dependencies, env template, middleware, and a protected smoke route.

User: Clerk packages are present but middleware never runs.
Skill: fixes matcher config, provider placement, and env loading order.