Authentication Patterns

Comprehensive guidance for implementing secure authentication systems, covering JWT, OAuth 2.0, OIDC, Passkeys, MFA, and session management.

When to Use This Skill

Use this skill when:

• Implementing JWT-based authentication
• Setting up OAuth 2.0 or OpenID Connect flows
• Implementing passwordless authentication (Passkeys/FIDO2)
• Adding multi-factor authentication (MFA/2FA)
• Designing session management and secure cookies
• Implementing SSO (Single Sign-On)
• Reviewing authentication security
• Choosing between authentication approaches

Authentication Method Selection