firebase-auth-basics

Guide for setting up and using Firebase Authentication. Use this skill when the user's app requires user sign-in, user management, or secure data access using auth rules.

215stars28forksUpdated 4/12/2026

Security Web Development #security #authentication #firebase #firebase-cli #web #user-management

Security Assessment

Low Risk(70/100)

Detected risks:

Secret Exposure([references/client_sdk_web.md] token =, [references/client_sdk_web.md] Token =, [references/client_sdk_web.md] secret =)

Security Score70/100

About firebase-auth-basics

The 'firebase-auth-basics' skill provides a guide for setting up and using Firebase Authentication, which allows you to implement secure and scalable user authentication in your application. This skill helps in managing user sign-in, user data, and enforcing secure access rules for your app's data. Firebase Authentication can integrate with a variety of identity providers such as Google, Facebook, Twitter, and more, offering users a smooth authentication experience. It also supports email/password-based sign-in and phone number authentication, allowing for a wide range of options based on your app's needs.

FAQ

What authentication methods are supported?

This skill supports multiple authentication methods including email/password, federated identity providers (Google, Facebook, Twitter, GitHub, Microsoft, Apple), phone number authentication, anonymous authentication, and custom authentication systems.

Can I use Firebase Authentication without the Firebase CLI?

Yes, the Firebase CLI is not required to use Firebase Authentication, though it is recommended for easier configuration and management.

What are the security rules for Firebase Authentication?

Firebase Authentication can be integrated with Firebase Firestore and Storage using security rules. You can use the `request.auth` object to secure data access based on the user's authentication state.

Can I enable authentication providers through the CLI?

Yes, you can enable Google Sign-In, anonymous auth, and email/password auth via the Firebase CLI. For other providers, such as Facebook or Twitter, you'll need to enable them through the Firebase Console.

What is the expiration time of ID tokens?

ID tokens in Firebase Authentication are short-lived, typically expiring after 1 hour. To maintain a session, a refresh token can be used to obtain new ID tokens.