clerk

name	clerk
description	Clerk authentication router. Use when user asks about adding authentication, setting up Clerk, custom sign-in flows, Swift or native iOS auth, native Android auth, Next.js patterns, React patterns, Vue patterns, Nuxt patterns, Astro patterns, TanStack Start patterns, Expo patterns, React Router patterns, Chrome Extension patterns, organizations, billing, subscriptions, payments, pricing, plans, seat-based pricing, feature entitlements, syncing users, or testing. Automatically routes to the specific skill based on their task.
license	MIT
metadata	{"version":"2.0.0"}

Clerk Skills Router

Version Detection

Check package.json to determine the Clerk SDK version. This determines which patterns to use:

Package	Core 2 (LTS until Jan 2027)	Current
@clerk/nextjs	v5–v6	v7+
@clerk/react or @clerk/clerk-react	v5–v6	v7+
@clerk/expo or @clerk/clerk-expo	v1–v2	v3+
@clerk/react-router	v1–v2	v3+
@clerk/tanstack-react-start	< v0.26.0	v0.26.0+

Default to current if the version is unclear or the project is new. Core 2 packages use @clerk/clerk-react and @clerk/clerk-expo (with clerk- prefix); current packages use @clerk/react and @clerk/expo.

All skills are written for the current SDK. When something differs in Core 2, it's noted inline with > **Core 2 ONLY (skip if current SDK):** callouts. The exception is clerk-custom-ui, which has separate core-2/ and core-3/ directories for custom flow hooks since those APIs are entirely different between versions.

---

By Task

Adding Clerk to your project → Use clerk-setup

• Framework detection and quickstart
• Environment setup, API keys, Keyless flow
• Migration from other auth providers

Custom sign-in/sign-up UI → Use clerk-custom-ui

• Custom authentication flows with useSignIn / useSignUp hooks
• Appearance and styling (themes, colors, layout)
• <Show> component for conditional rendering

Advanced Next.js patterns → Use clerk-nextjs-patterns

• Server vs Client auth APIs
• Middleware strategies
• Server Actions, caching
• API route protection

React patterns → Use clerk-react-patterns

• Hooks (useAuth, useUser, useClerk)
• Protected routes, auth guards
• Router integration

React Router patterns → Use clerk-react-router-patterns

• Loaders & actions with auth
• Route protection
• SSR auth

Vue patterns → Use clerk-vue-patterns

• Composables (useAuth, useUser, useClerk)
• Vue Router guards
• Pinia auth store integration

Nuxt patterns → Use clerk-nuxt-patterns

• Server middleware auth
• SSR auth with composables
• Server API routes

Astro patterns → Use clerk-astro-patterns

• SSR auth pages
• Island components with React
• Middleware & API routes

TanStack Start patterns → Use clerk-tanstack-patterns

• Server functions with auth
• Route protection via loaders
• Vinxi server integration

Expo patterns → Use clerk-expo-patterns

• Secure token storage
• OAuth deep linking
• Push notifications with auth

Chrome Extension patterns → Use clerk-chrome-extension-patterns

• Background scripts auth
• Popup auth flows
• Content scripts with sync host

B2B / Organizations → Use clerk-orgs

• Multi-tenant apps
• Organization slugs in URLs
• Roles, permissions, RBAC
• Member management

Billing & Subscriptions → Use clerk-billing

• <PricingTable /> component
• Plan and feature gating with has()
• Seat-based B2B billing with organizations
• Subscription lifecycle webhooks
• Free trials, invoicing

Webhooks → Use clerk-webhooks

• Real-time events
• Data syncing
• Notifications & integrations

E2E Testing → Use clerk-testing

• Playwright/Cypress setup
• Auth flow testing
• Test utilities

Swift / native iOS auth → Use clerk-swift

• Native iOS Swift and SwiftUI projects
• ClerkKit and ClerkKitUI implementation guidance
• Source-driven patterns from clerk-ios

Android / native mobile auth → Use clerk-android

• Native Android Kotlin and Jetpack Compose projects
• clerk-android-api and clerk-android-ui implementation guidance
• Source-driven patterns from clerk-android
• Do not use for Expo or React Native projects

Backend REST API → Use clerk-backend-api

• Browse API tags and endpoints
• Inspect endpoint schemas
• Execute API requests with scope enforcement

Quick Navigation

If you know your task, you can directly access:

• /clerk-setup - Framework setup
• /clerk-custom-ui - Custom flows & appearance
• /clerk-nextjs-patterns - Next.js patterns
• /clerk-react-patterns - React patterns
• /clerk-react-router-patterns - React Router patterns
• /clerk-vue-patterns - Vue patterns
• /clerk-nuxt-patterns - Nuxt patterns
• /clerk-astro-patterns - Astro patterns
• /clerk-tanstack-patterns - TanStack Start patterns
• /clerk-expo-patterns - Expo patterns
• /clerk-chrome-extension-patterns - Chrome Extension patterns
• /clerk-orgs - Organizations
• /clerk-billing - Billing & subscriptions
• /clerk-webhooks - Webhooks
• /clerk-testing - Testing
• /clerk-swift - Swift/native iOS
• /clerk-android - Native Android
• /clerk-backend-api - Backend REST API

Or describe what you need and I'll recommend the right one.