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clerk-auth

Diagnose Clerk v6+ authentication issues in Next.js and Cloudflare Workers.

961|99|Updated Oct 20, 2025
Search Tags:#testing#authentication#jwt#error prevention#nextjs#clerk
One-click install
npx skills add https://github.com/jezweb/claude-skills --skill clerk-auth
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: clerk-auth
Source: https://github.com/jezweb/claude-skills/tree/main/skills/clerk-auth
Command: npx skills add https://github.com/jezweb/claude-skills --skill clerk-auth

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires @clerk/nextjs, @clerk/backend, @clerk/clerk-react, and includes scripts (resource) and references (resource) and templates (resource) components.

What problem does it solve?

This Skill eliminates the frustration of Clerk authentication configuration errors and breaking changes, saving developers hours of debugging and research time.

Core Features & Use Cases

  • Breaking Change Prevention: Stay current with API version 2025-11-10 changes and Next.js v6 async patterns.
  • Error Resolution: Automatically prevent 12 common Clerk authentication issues with proven solutions.
  • Use Case: Imagine you're upgrading to Next.js v6 and Clerk's latest API. Use this Skill to handle billing endpoint migrations, async auth() helpers, and JWT size limitations automatically.

Quick Start

Use the clerk-auth skill to help me set up Clerk authentication in my Next.js application and prevent common errors.

Frequently Asked Questions about clerk-auth

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I set up Clerk authentication in Next.js v6?▼

Set up Clerk authentication in Next.js v6 by installing @clerk/nextjs, configuring async auth() helpers, and applying PKCE flow. This Skill automates the configuration and prevents common breaking changes between API versions.

What are common Clerk authentication errors and how do I fix them?▼

Common Clerk errors include token verification failures, CSRF protection gaps via authorizedParties, and 431 header issues in Vite dev environments. This Skill diagnoses and resolves these 12 frequent issues automatically.

How do I migrate Clerk endpoints and field names when upgrading?▼

Migrate Clerk endpoints by updating commerce to billing paths and renaming fields like payment_source to payment_method. This Skill handles API 2025-11-10 migrations and prevents breaking changes during upgrades.

Can I use Clerk authentication with Cloudflare Workers and frontend-backend stacks?▼

Yes, Clerk v6+ supports Cloudflare Workers and frontend-backend architectures with async auth patterns and PKCE protection. This Skill applies to all three environments with compatible token verification.

How do I generate and integrate JWT tokens with Clerk?▼

Generate JWT tokens using Clerk's session token generation and JWT templates. This Skill handles template configuration and addresses JWT size limitations within Clerk's token system.

Why should I prevent Clerk authentication errors before deployment?▼

Authentication errors cause failed logins, security gaps, and downtime. This Skill prevents 12 common issues proactively, saving debugging hours and ensuring secure token verification across upgrades.

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