auth-billing-guide

Name: auth-billing-guide
Author: alirezarezvani

Authentication & Billing Implementation Guide

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# Authentication & Billing Implementation Guide

## Overview

Authentication and billing are foundational SaaS capabilities that affect every user interaction. This guide covers implementation patterns, security best practices, and common pitfalls for both systems.

## Authentication

### OAuth2 / OpenID Connect (OIDC) Flows

#### Authorization Code Flow (Recommended for Web Apps)
1. Redirect user to authorization server (`/authorize`)
2. User authenticates and consents
3. Authorization server r

How to Use

Recommended: Install to project (local)

mkdir -p .claude/skills
curl -o .claude/skills/auth-billing-guide.md \
  https://raw.githubusercontent.com/alirezarezvani/claude-skills/main/product-team/saas-scaffolder/references/auth-billing-guide.md

Skill is scoped to this project only. Add .claude/skills/ to your .gitignoreif you don't want to commit it.

Alternative: Clone full repo

git clone https://github.com/alirezarezvani/claude-skills

Then reference at product-team/saas-scaffolder/references/auth-billing-guide.md