clerk

Add a specific feature to an existing Clerk project. Features include mfa, oauth, organizations, webhooks, billing, supabase.

**Project Name:** `$0`

Setup backend API authentication with JWT middleware, protected routes, and API clients

Implement sign-in/sign-up flows, configure authentication providers, and generate auth components

Setup Clerk Billing, configure pricing plans, implement subscription flows with Stripe

Detect project framework (Next.js, React), analyze structure, and recommend Clerk integration patterns

Configure MFA with TOTP/SMS authentication, MFA UI components, and backup codes

Migrate from Auth0, Firebase, Supabase Auth, NextAuth to Clerk with data transformation

Integrate Clerk with Next.js App Router - middleware, server components, and route handlers

Implement Clerk in Next.js Pages Router with SSR auth and API route protection

Configure OAuth providers (19 total), setup redirect URLs, generate provider configs, test OAuth flows

Setup organization features, configure RBAC, implement org switching for multi-tenant apps

Install and configure Clerk SDK, generate environment files, and setup authentication provider

Sync Clerk users to Supabase, configure JWT verification, setup RLS with Clerk auth

Customize Clerk UI through theme configuration, component styling, and localization

Validate Clerk environment setup, check configuration, audit security, test auth flows

Setup Clerk authentication for Vercel AI SDK apps, protect AI routes, provide user context

Backend API authentication patterns with Clerk JWT middleware and route protection. Use when building REST APIs, GraphQL APIs, protecting backend routes, implementing JWT validation, setting up Express middleware, or when user mentions API authentication, backend security, JWT tokens, or protected endpoints.

Pre-built and custom Clerk authentication component templates with theming and customization patterns. Use when building authentication UI, creating sign-in/sign-up pages, customizing Clerk components, implementing user buttons, theming auth flows, or when user mentions Clerk components, SignIn, SignUp, UserButton, auth UI, appearance customization, or authentication theming.

Clerk Billing and Stripe subscription management setup. Use when implementing subscriptions, configuring pricing plans, setting up billing, adding payment flows, managing entitlements, or when user mentions Clerk Billing, Stripe integration, subscription management, pricing tables, payment processing, or monetization.

Route protection and authorization patterns for Clerk middleware. Use when implementing route guards, protecting API routes, configuring middleware matchers, setting up role-based access control, creating auth boundaries, or when user mentions middleware, route protection, auth guards, protected routes, public routes, matcher patterns, or authorization middleware.

Complete Next.js integration patterns for Clerk authentication with App Router and Pages Router. Use when setting up Clerk in Next.js, configuring authentication middleware, implementing protected routes, setting up server/client components with auth, or when user mentions Clerk Next.js setup, App Router auth, Pages Router auth, or Next.js authentication integration.

Configure OAuth authentication providers for Clerk (Google, GitHub, Discord, Apple, Microsoft, Facebook, LinkedIn, Twitter, and 11+ more). Use when setting up social login, configuring OAuth providers, implementing authentication flows, generating redirect URLs, testing OAuth connections, or when user mentions Clerk OAuth, social authentication, provider setup, or multi-provider auth.

Implement Clerk multi-tenant organization features with RBAC, role-based access control, organization switching, member management, and tenant isolation. Use when building multi-tenant SaaS applications, implementing organization hierarchies, configuring custom roles and permissions, setting up organization-scoped data isolation, or when user mentions organizations, RBAC, multi-tenancy, roles, permissions, organization switcher, member management, or tenant isolation.

Clerk session handling, JWT verification, token management, and multi-session workflows. Use when implementing session validation, JWT claims customization, token refresh patterns, session lifecycle management, or when user mentions session errors, authentication tokens, JWT verification, multi-device sessions, or session security.

Clerk and Supabase integration patterns for user sync, JWT authentication, and RLS policies. Use when integrating Clerk authentication with Supabase, syncing user data between platforms, configuring RLS with Clerk JWT tokens, setting up webhooks for user events, implementing secure database access with Clerk identity, or when user mentions Clerk Supabase sync, user synchronization, JWT RLS, authentication webhooks, or database user management.

Comprehensive testing and validation tools for Clerk authentication integrations. Includes E2E auth flow testing, security audits, configuration validation, unit testing patterns for sign-in/sign-up flows. Use when implementing Clerk tests, validating authentication setup, testing auth flows, running security audits, creating E2E tests for Clerk, or when user mentions Clerk testing, auth validation, E2E authentication tests, security audit, or test coverage.