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Firebase Auth Basics

Official
firebase·vlatest·backend·Apache-2.0

Official firebase skill covering Firebase, authentication for implementing security and authentication.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add firebase/agent-skills --skill firebase-auth-basics -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

firebase

Matched to the vendor's own GitHub organisation.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned firebase/agent-skills at 306cc1844c.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
306cc1844c
Manifest
skills/firebase-auth-basics/SKILL.md
Scanned
6 files, 849 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

The Firebase Auth Basics skill enables AI agents to manage user authentication and authorization using Firebase Authentication. It supports common tasks like signing in users with email/password, handling tokens, and verifying identities securely.

When to use it

  • Setting up a web or mobile app that requires user login functionality
  • Implementing secure access control for protected resources
  • Integrating Firebase into an AI agent workflow that needs identity verification

Key capabilities

  • Email and password authentication
  • Token-based user identification
  • Secure session management
  • Integration with Firebase SDKs

Example prompts

  • "Set up email/password login using Firebase Auth"
  • "Verify a user's ID token in the backend"
  • "Handle user sign-in errors securely"

Tips & gotchas

  • Ensure your Firebase project is configured correctly and the agent has access to the necessary API keys.
  • Always validate tokens on the server side for secure authentication, even if they are obtained client-side.