Clerk Core Workflow A: Sign-Up & Sign-In

Overview

Implement comprehensive user authentication flows including email, OAuth, and custom UI.

Prerequisites

• Clerk SDK installed and configured
• OAuth providers configured in Clerk dashboard (if using social login)
• Sign-in/sign-up URLs configured in environment

Instructions

1. Step 1: Pre-built Components (Quick Start)
2. Step 2: Custom Sign-In Form
3. Step 3: OAuth Social Login
4. Step 4: Email Verification Flow

For full implementation details and code examples, load: Read(${CLAUDE_SKILL_DIR}/references/implementation-guide.md)

Output

• Working sign-in/sign-up pages
• OAuth social login configured
• Email verification flow
• Custom authentication UI

Error Handling

Error	Cause	Solution
form_identifier_not_found	Email not registered	Show sign-up prompt
form_password_incorrect	Wrong password	Show error, offer reset
session_exists	Already signed in	Redirect to dashboard
verification_failed	Wrong code	Allow retry, resend code

Resources

• Sign-In Component
• Custom Flows
• OAuth Configuration

Next Steps

Proceed to clerk-core-workflow-b for session management and middleware.

Examples

Basic usage: Apply clerk core workflow a to a standard project setup with default configuration options.

Advanced scenario: Customize clerk core workflow a for production environments with multiple constraints and team-specific requirements.