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

• Step 1: Pre-built Components (Quick Start)

• Step 2: Custom Sign-In Form

• Step 3: OAuth Social Login

• 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.