oauth-expert

Guide OAuth 2.0 and OpenID Connect authorization flows with PKCE and JWT validation.

1|Updated Mar 2, 2026
One-click install
npx skills add https://github.com/0xMerl99/FangAI --skill oauth-expert
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: oauth-expert
Source: https://github.com/0xMerl99/FangAI/tree/main/crates/openfang-skills/bundled/oauth-expert
Command: npx skills add https://github.com/0xMerl99/FangAI --skill oauth-expert

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill provides expert guidance on implementing secure authorization flows, managing tokens, and ensuring identity federation for applications.

Core Features & Use Cases

  • OAuth 2.0 & OIDC Expertise: Offers best practices for authorization code flow with PKCE, client credentials flow, and OpenID Connect integration.
  • Token Management: Guides on secure token storage, refresh strategies, and validation of JWTs.
  • Use Case: A developer building a new web application needs to integrate user authentication using OAuth 2.0. This Skill can provide step-by-step advice on setting up the authorization server, handling redirects, and securely managing access and refresh tokens.

Quick Start

Consult the oauth-expert skill for best practices on implementing the Authorization Code flow with PKCE for a single-page application.

Frequently Asked Questions about oauth-expert

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

FAQPage Schema
How do I implement OAuth 2.0 authorization code flow with PKCE for a single-page application?

To implement OAuth 2.0 authorization code flow with PKCE for a single-page application, you need to generate a code verifier and challenge, redirect users for authorization, and securely exchange the code for tokens. This approach prevents interception attacks in public clients.

What is the best way to manage JWT validation and secure token storage in web applications?

The best way to manage JWT validation and secure token storage involves verifying signatures, checking expiration claims, and storing tokens securely using patterns like the Backend-for-Frontend (BFF) to prevent exposure to client-side scripts.

When do I need OpenID Connect integration instead of standard OAuth 2.0?

You need OpenID Connect integration when your application requires user authentication and identity details, whereas standard OAuth 2.0 only handles delegated authorization for API access without providing user profile information.

Can I use client credentials flow for machine-to-machine (M2M) services?

Yes, you can use the OAuth 2.0 client credentials flow for machine-to-machine (M2M) services. It allows autonomous servers to securely request access tokens directly without user context for API authentication.

How does step-up authentication work with identity federation patterns?

Step-up authentication works with identity federation patterns by requiring users to perform a stronger authentication factor when accessing sensitive resources, dynamically adjusting based on the current session's assurance level.