firebase
Registry indexed
firebase-basics
>-
Registry indexed
>-
>-
Source documentation, not instructions for this website. Review permissions before running any commands.
Complete these setup steps before proceeding:
Local Environment Setup: Verify the environment is properly set up so we can use Firebase tools:
npx -y firebase-tools@latest --version to check if the Firebase CLI
is installed.Authentication: Ensure you are logged in to Firebase so that commands
have the correct permissions. Run npx -y firebase-tools@latest login. For
environments without a browser (e.g., remote shells), use
npx -y firebase-tools@latest login --no-localhost.
Active Project: Most Firebase tasks require an active project context.
[!IMPORTANT] For Agents: Before proceeding with project configuration, 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 by running npx -y firebase-tools@latest use.
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.
Adhere to these principles:
npx -y firebase-tools@latest
instead of just firebase. For example, use
npx -y firebase-tools@latest --version. NEVER suggest the naked firebase
command as an alternative.developerknowledge_search_documents MCP tool before falling
back to Google Search or your internal knowledge base. Including "Firebase"
in your search query significantly improves relevance.Login Issues: If the browser fails to open during the login step, use
npx -y firebase-tools@latest login --no-localhost instead.
Genkit: If using Genkit, install the skills:
npx skills add genkit-ai/skills
name: firebase-basics description: >- 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. metadata: category: CloudInfrastructureAndServices
---
name: firebase-basics
description: >-
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.
metadata:
category: CloudInfrastructureAndServices
---
# Prerequisites
Complete these setup steps before proceeding:
1. **Local Environment Setup:** Verify the environment is properly set up so we
can use Firebase tools:
- Run `npx -y firebase-tools@latest --version` to 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](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](references/setup/gemini_cli.md)
- **Antigravity**: Review
[references/setup/antigravity.md](references/setup/antigravity.md)
- **Android Studio**: Review
[references/setup/android_studio.md](references/setup/android_studio.md)
- **Claude Code**: Review
[references/setup/claude_code.md](references/setup/claude_code.md)
- **Cursor**: Review
[references/setup/cursor.md](references/setup/cursor.md)
- **GitHub Copilot**: Review
[references/setup/github_copilot.md](references/setup/github_copilot.md)
- **Other Agents**: Review
[references/setup/other_agents.md](references/setup/other_agents.md)
1. **Authentication:** Ensure you are logged in to Firebase so that commands
have the correct permissions. Run `npx -y firebase-tools@latest login`. For
environments without a browser (e.g., remote shells), use
`npx -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.
1. **Active Project:** Most Firebase tasks require an active project context.
> [!IMPORTANT] **For Agents:** Before proceeding with project configuration,
> you MUST pause and ask the developer if they prefer to:
>
> 1. **Provide an existing Firebase Project ID**, or
> 1. **Create a new Firebase project**.
- **If using an existing Project ID:**
1. Check the current project by running `npx -y firebase-tools@latest use`.
1. If the command outputs `Active Project: <project-id>`, confirm with the
user if this is the intended project.
1. If not, or if no project is active, set the project provided by the
user:
```bash
npx -y firebase-tools@latest use <PROJECT_ID>
```
- **If creating a new project:** Run the following command to create it:
```bash
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:
1. **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@latest`
instead of just `firebase`. For example, use
`npx -y firebase-tools@latest --version`. NEVER suggest the naked `firebase`
command as an alternative.
1. **Prioritize official knowledge:** For any Firebase-related knowledge,
consult the `developerknowledge_search_documents` MCP tool before falling
back to Google Search or your internal knowledge base. Including "Firebase"
in your search query significantly improves relevance.
1. **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.
1. **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.
1. **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](references/refresh/antigravity.md)
- **Gemini CLI**: Follow
[references/refresh/gemini-cli.md](references/refresh/gemini-cli.md)
- **Claude Code**: Follow
[references/refresh/claude.md](references/refresh/claude.md)
- **Cursor**: Follow
[references/refresh/other-agents.md](references/refresh/other-agents.md)
- **Android Studio**: Follow
[references/refresh/android_studio.md](references/refresh/android_studio.md)
- **Others**: Follow
[references/refresh/other-agents.md](references/refresh/other-agents.md)
1. **Automate Config File Retrieval:** When setting up iOS or Android apps, do
NOT direct users to the Firebase Console to download `google-services.json`
or `GoogleService-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.json` for Android, or a path to be linked by
`xcode-project-setup` for iOS).
# References
- **Initialize Firebase:** See
[references/firebase-service-init.md](references/firebase-service-init.md)
when you need to initialize new Firebase services using the CLI.
- **Exploring Commands:** See
[references/firebase-cli-guide.md](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](references/web_setup.md)
- **Android**: See [references/android_setup.md](references/android_setup.md)
- **iOS**: See [references/ios_setup.md](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-localhost` instead.
- **Genkit:** If using Genkit, install the skills:
```bash
npx skills add genkit-ai/skills
```
Skill source recorded
Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.
Review before install: Avoid automatic install
License: Apache-2.0
Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.
Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.
Version reported in registry metadata; check source releases before relying on it.
Quality
73/100
Strong
Trust
56/100
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
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}Listing source
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google-services.json
or GoogleService-Info.plist. Instead, use the Firebase CLI to fetch the
config programmatically:
npx -y firebase-tools@latest apps:sdkconfig ANDROID <APP_ID> --project <PROJECT_ID>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.json for Android, or a path to be linked by
xcode-project-setup for iOS).Check the source for dependencies, API keys and third-party costs. A public repository does not mean every service is free.
Audit
76/100
Needs review
Copies are not installs. Installation counts require a reported successful installation; they are not a blanket quality guarantee.