oauth-expert

Implement OAuth 2.0 and OpenID Connect flows with PKCE and token lifecycle management.

Updated Mar 13, 2026

Search Tags:#authorization #security #authentication #oauth #token management #identity #openid connect

Ready to run

npx skills add https://github.com/bacoco/openfang-fork --skill oauth-expert-bacoco

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: oauth-expert
Source: https://github.com/bacoco/openfang-fork/tree/main/crates/openfang-skills/bundled/oauth-expert
Command: npx skills add https://github.com/bacoco/openfang-fork --skill oauth-expert-bacoco

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill provides expert guidance on implementing secure and robust authorization flows, managing tokens effectively, and ensuring identity federation across various application types.

Core Features & Use Cases

Secure Authorization: Implement OAuth 2.0 and OpenID Connect flows (e.g., Authorization Code with PKCE).
Token Management: Securely store, refresh, and validate access and refresh tokens.
Identity Federation: Configure multi-tenant identity solutions and step-up authentication.
Use Case: A developer needs to integrate a new Single Page Application (SPA) with an existing OAuth 2.0 provider and is unsure about the best practices for handling tokens securely. This Skill will guide them through setting up the Authorization Code flow with PKCE and managing tokens via a Backend-for-Frontend (BFF) pattern.

Quick Start

Guide me through implementing the Authorization Code flow with PKCE for a web 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 web application?▼

To implement OAuth 2.0 Authorization Code flow with PKCE for a web application, generate a code verifier and challenge, redirect users to the authorization server, and exchange the resulting code for tokens. This Skill guides you through securely setting up this flow.

What is the best way to manage access and refresh tokens in a Single Page Application?▼

The best way to manage access and refresh tokens in a Single Page Application is by using a Backend-for-Frontend (BFF) pattern. This approach securely handles token lifecycle management and prevents exposing tokens directly to client-side JavaScript.

Does OpenID Connect support multi-tenant identity federation and step-up authentication?▼

Yes, OpenID Connect supports multi-tenant identity federation and step-up authentication. You can configure these identity solutions to manage complex user directories and require additional authentication factors when accessing sensitive operations.

How do I securely validate access tokens for machine-to-machine services?▼

To securely validate access tokens for machine-to-machine services, verify the token signature, issuer, audience, and expiration claims. This Skill provides expert knowledge on best practices for robust token validation across various service architectures.

Why use a Backend-for-Frontend pattern for OAuth token storage in SPAs?▼

Use a Backend-for-Frontend pattern for OAuth token storage in SPAs to mitigate cross-site scripting risks. By keeping tokens securely stored in an intermediary backend, you prevent malicious scripts from accessing your authorization credentials.

Can I use OAuth 2.0 for both mobile apps and web applications?▼

Yes, you can use OAuth 2.0 for both mobile apps and web applications. This Skill addresses implementation scenarios across various platforms, focusing on best practices for adapting authorization flows and secure token storage to each environment.