
firebase-basics
Provides foundational Firebase CLI setup, CLI installation, version checks (firebase-tools@latest --version), CLI login (including --no-localhost), project creation, project selection (firebase use), and app config file downloads (google-services.json, GoogleService-Info.plist). Use ONLY for CLI login, project creation/switching, or downloading app config files. Don't use for Firebase Hosting deploy, Firestore, Auth, App Hosting, Data Connect, Crashlytics, or Remote Config.
- Installs
- 176.3K
- Last 24h
- +532
- Trending rank
- #641
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/firebase/agent-skills --skill firebase-basics- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads firebase-basics automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
Security audits
Independent scans of the skill's instructions and bundled files.
SKILL.md
The instructions your agent reads when the skill is triggered.
Prerequisites
Complete these setup steps before proceeding:
-
Local Environment Setup: Verify the environment is properly set up so we can use Firebase tools:
- Run
npx -y firebase-tools@latest --versionto check if the Firebase CLI is installed. - Verify if the Firebase MCP server is installed using your existing tools.
- CRITICAL: Before configuring any extensions or agent environments below, you MUST read references/local-env-setup.md.
- DO NOT SKIP this step: if 'firebase-basics' is the only Firebase skill
available to you, you must follow the reference for your agent environment
to set up the full suite of Firebase skills:
- Gemini CLI: Review references/setup/gemini_cli.md
- Antigravity: Review references/setup/antigravity.md
- Android Studio: Review references/setup/android_studio.md
- Claude Code: Review references/setup/claude_code.md
- Cursor: Review references/setup/cursor.md
- GitHub Copilot: Review references/setup/github_copilot.md
- Other Agents: Review references/setup/other_agents.md
- Run
-
Authentication: Ensure you are logged in to Firebase so that commands have the correct permissions. Run
npx -y firebase-tools@latest login:listfirst; if not logged in, runnpx -y firebase-tools@latest login. For environments without a browser (e.g., remote shells), usenpx -y firebase-tools@latest login --no-localhost.- The command should output the current user.
- If you are not logged in, follow the interactive instructions from this command to authenticate.
-
Active Project: Most Firebase tasks require an active project context.
[!IMPORTANT] For Agents: If no Project ID was provided, you MUST pause and ask the developer if they prefer to:
- Provide an existing Firebase Project ID, or
- Create a new Firebase project.
-
If using an existing Project ID:
-
Check the current project with
npx -y firebase-tools@latest use(iffirebase.jsonis missing at the project root, create{}first). -
If the command outputs
Active Project: <project-id>, confirm with the user if this is the intended project. -
If not, or if no project is active, set the project provided by the user:
npx -y firebase-tools@latest use <PROJECT_ID>
-
-
If creating a new project: Run the following command to create it:
npx -y firebase-tools@latest projects:create <project-id> --display-name "<display-name>"Note: The
<project-id>must be 6-30 characters, lowercase, and can contain digits and hyphens. It must be globally unique.
Firebase Usage Principles
Adhere to these principles:
- Use npx for CLI commands: To ensure you always use the latest version of
the Firebase CLI, always prepend commands with
npx -y firebase-tools@latestinstead of justfirebase. For example, usenpx -y firebase-tools@latest --version. NEVER suggest the nakedfirebasecommand as an alternative. - Prioritize official knowledge: For any Firebase-related knowledge,
consult the
developerknowledge_search_documentsMCP tool before falling back to Google Search or your internal knowledge base. Including "Firebase" in your search query significantly improves relevance. - Follow Agent Skills for implementation guidance: Skills provide opinionated workflows (CUJs), security rules, and best practices. Always consult them to understand how to implement Firebase features correctly instead of relying on general knowledge.
- Use Firebase MCP Server tools instead of direct API calls: Whenever you need to interact with remote Firebase APIs (such as fetching Crashlytics logs or executing Data Connect queries), use the tools provided by the Firebase MCP Server instead of attempting manual API calls.
- Keep Plugin / Agent Skills updated: Since Firebase best practices evolve
quickly, regularly check for and install updates to their Firebase plugin or
Agent Skills. Similarly, if you encounter issues with outdated tools or
commands, follow the steps below based on your agent environment:
- Antigravity: Follow references/refresh/antigravity.md
- Gemini CLI: Follow references/refresh/gemini-cli.md
- Claude Code: Follow references/refresh/claude.md
- Cursor: Follow references/refresh/other-agents.md
- Android Studio: Follow references/refresh/android_studio.md
- Others: Follow references/refresh/other-agents.md
- Automate Config File Retrieval: When setting up iOS or Android apps, do
NOT direct users to the Firebase Console to download
google-services.jsonorGoogleService-Info.plist. Instead, use the Firebase CLI to fetch the config programmatically:- For Android:
npx -y firebase-tools@latest apps:sdkconfig ANDROID <APP_ID> --project <PROJECT_ID> - For iOS:
npx -y firebase-tools@latest apps:sdkconfig IOS <APP_ID> --project <PROJECT_ID>Save the output to the appropriate location (e.g.,app/google-services.jsonfor Android, or a path to be linked byxcode-project-setupfor iOS).
- For Android:
References
- Initialize Firebase: See references/firebase-service-init.md when you need to initialize new Firebase services using the CLI.
- Exploring Commands: See references/firebase-cli-guide.md to discover and understand CLI functionality.
- SDK Setup: For detailed guides on adding Firebase to your app:
- Web: See references/web_setup.md
- Android: See references/android_setup.md
- iOS: See references/ios_setup.md
Common Issues
-
Login Issues: If the browser fails to open during the login step, use
npx -y firebase-tools@latest login --no-localhostinstead. -
Genkit: If using Genkit, install the skills:
npx skills add genkit-ai/skills
FAQ
What does the firebase-basics skill do?
Provides foundational Firebase CLI setup, CLI installation, version checks (firebase-tools@latest --version), CLI login (including --no-localhost), project creation, project selection (firebase use), and app config file downloads (google-services.json, GoogleService-Info.plist). Use ONLY for CLI login, project creation/switching, or downloading app config files. Don't use for Firebase Hosting deploy, Firestore, Auth, App Hosting, Data Connect, Crashlytics, or Remote Config.
How do I install firebase-basics?
Run npx skills add https://github.com/firebase/agent-skills --skill firebase-basics in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/firebase-basics/ (personal) or .claude/skills/firebase-basics/ (project).
Which AI agents can use firebase-basics?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is firebase-basics safe to install?
Security partners have reviewed it: Gen Agent Trust Hub passed; Socket flagged items to review; Snyk passed; Runlayer passed; ZeroLeaks flagged items to review. As with any skill, read the SKILL.md and bundled scripts before installing.
Who maintains firebase-basics?
It is published by firebase in firebase/agent-skills, and it is an official skill from the maker of the technology it covers. It has 176,350 recorded installs.
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