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OAuth2

Explain OAuth 2.0 authentication and authorization workflows with PKCE and OpenID Connect.

17|4|Updated Oct 21, 2025
Search Tags:#authorization#authentication#oauth2#pkce#token-management#security-best-practices#openid-connect
One-click install
npx skills add https://github.com/oriolrius/pki-manager-web --skill oauth2
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: OAuth2
Source: https://github.com/oriolrius/pki-manager-web/tree/main/.claude/skills/oauth2
Command: npx skills add https://github.com/oriolrius/pki-manager-web --skill oauth2

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Guides developers through implementing OAuth 2.0 authentication and authorization, including flows, token management, OpenID Connect, and security best practices.

Core Features & Use Cases

  • Authorization Code Flow with PKCE for public clients
  • Client Credentials for machine-to-machine APIs
  • OpenID Connect support with ID tokens and userinfo
  • Token validation, rotation, and secure storage best practices
  • Secure redirect URI handling and CSRF protection

Quick Start

Describe a concrete OAuth 2.0 integration scenario and outline the exact flow, tokens, and security safeguards required for a protected API.

Frequently Asked Questions about OAuth2

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

FAQPage Schema
How do I implement OAuth 2.0 authentication with PKCE for a single page application?▼

Implement OAuth 2.0 authentication for single page applications using the Authorization Code Flow with PKCE. This method secures public clients by requiring a code verifier and code challenge, preventing token interception during the exchange process.

What is the difference between OpenID Connect ID tokens and standard OAuth 2.0 access tokens?▼

OpenID Connect ID tokens contain user identity claims, while standard OAuth 2.0 access tokens authorize API access. Integrating OpenID Connect provides an ID token and userinfo endpoint alongside your authorization server's access token.

How do I secure machine-to-machine API communication with client credentials?▼

Secure machine-to-machine API communication using the OAuth 2.0 client credentials flow. This grants access tokens directly to your service without user intervention, requiring secure token validation on the protected API gateway.

What are the best practices for OAuth 2.0 token validation and secure storage?▼

OAuth 2.0 token validation and secure storage best practices include implementing token rotation, validating tokens server-side, and enforcing CSRF protection. Secure redirect URI handling is also critical to prevent authorization code injection.

Does this OAuth 2.0 workflow guide cover integration for both mobile apps and server-side apps?▼

Yes, this OAuth 2.0 workflow guide covers integration for server-side apps, mobile apps, single page applications, and API gateways. It outlines exact flows, token management, and security safeguards required for each protected environment.

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