Does this skill support multi-factor authentication?

Yes, it provides implementation patterns for Passkeys, TOTP, and SMS-based multi-factor authentication (MFA), prioritizing biometric standards for higher security.

Can I use these patterns with any web framework?

Yes. While the skill provides specific examples for frameworks like FastAPI and Flask, the underlying logic for JWTs, hashing, and OAuth flows is based on industry standards applicable to any stack.

Why is OAuth 2.1 with PKCE emphasized over other methods?

OAuth 2.1 deprecates the implicit grant due to security vulnerabilities. PKCE (Proof Key for Code Exchange) provides a more secure authorization flow for both SPAs and mobile applications.

Does it include protection against common auth attacks?

Absolutely. The skill enforces rate limiting, generic error messages to prevent account enumeration, and strict session cookie attributes to mitigate XSS and CSRF risks.

Authentication Patterns

Name: Authentication Patterns
Author: yonatangross

byyonatangross

•

Security & Testing

Implements secure, industry-standard authentication and authorization patterns including OAuth 2.1, Passkeys, and JWT management.

The Authentication Patterns skill provides a robust framework for integrating production-ready security into Claude Code development workflows. It streamlines the implementation of complex authentication flows like OAuth 2.1 with PKCE, modern biometric Passkeys (WebAuthn), and secure password hashing using Argon2id. By enforcing security best practices and prohibiting common anti-patterns—such as implicit grants or plaintext storage—this skill ensures that applications are built with a security-first mindset, making it indispensable for developers building scalable and secure web services.

Key Features

01JWT access and refresh token management with rotation guidelines

02OAuth 2.1 implementation with mandatory PKCE support

03Passkeys and WebAuthn integration for biometric passwordless security

04Hardened session security using HTTPOnly, Secure, and SameSite cookies

0569 GitHub stars

06Secure password hashing utilizing Argon2id and bcrypt

Use Cases

01Building a secure login and registration system for FastAPI or React applications

02Implementing role-based access control (RBAC) for complex user permission hierarchies

03Upgrading legacy authentication systems to modern biometric Passkey standards

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add yonatangross/orchestkit auth-patterns

For use in Claude.ai and ChatGPT

Download Skill