firebase-auth

SKILL.md

Email/password, OAuth, phone auth, and custom tokens for user authentication and session management.

Supports email/password sign-up and sign-in with password reset, plus OAuth providers (Google, GitHub, Microsoft, Apple) with popup and redirect flows

Includes client-side auth state management via listeners and React hooks, plus server-side token verification and session cookies for SSR applications

Provides custom claims and roles, phone authentication with reCAPTCHA, and multi-factor authentication enrollment and verification

Prevents 12 documented errors including invalid credentials, popup blocking, token expiration, and custom claims caching issues through proper error handling and token refresh patterns

Firebase Authentication

Status: Production Ready
Last Updated: 2026-01-25
Dependencies: None (standalone skill)
Latest Versions: firebase@12.8.0, firebase-admin@13.6.0

Quick Start (5 Minutes)

1. Enable Auth Providers in Firebase Console

Go to Firebase Console > Authentication > Sign-in method

Enable desired providers (Email/Password, Google, etc.)

Configure OAuth providers with client ID/secret

2. Initialize Firebase Auth (Client)