Firebase MCP Server

Official Firebase MCP server built into the Firebase CLI. Covers Firestore, Auth, Cloud Functions, Realtime Database, Remote Config, Crashlytics, and more.

Developer Tools by Google (Firebase) OAuth2 (via Firebase CLI login) or Application Default Credentials active

GitHub Docs npm: firebase-tools

Overview

The Firebase MCP server is the official Model Context Protocol server maintained by Google as part of the Firebase CLI (firebase-tools). It lets AI assistants like Claude Desktop, Cursor, Gemini CLI, VS Code Copilot, Cline, and Windsurf manage Firebase projects directly: querying Firestore documents, retrieving Crashlytics issues, listing Cloud Functions, inspecting Auth users, generating security rules, and deploying resources.

Unlike many community MCP servers, this one ships inside the CLI itself. You launch it with npx firebase-tools@latest mcp, and it reuses your existing Firebase CLI credentials, so no separate API key is required. Tool surface is broad: project and app management, Firestore CRUD plus index/database administration, Realtime Database read/write, Data Connect (GraphQL/PostgreSQL), App Hosting logs, Cloud Messaging, Storage, Remote Config templates, Crashlytics issues and notes, and a developer knowledge search for Firebase/Google documentation.

The server also exposes prebuilt slash command prompts (/firebase:deploy, /firebase:init, /firestore:generate_security_rules, /crashlytics:connect, etc.) and documentation resources. You can scope which features are active via the --only flag, which is useful for keeping the tool list focused for the model.

Tools

Tool	Description
`firebase_login / firebase_logout`	Sign in or out of the Firebase CLI from within the MCP session.
`firebase_list_projects / firebase_get_project / firebase_create_project`	Discover, inspect, and create Firebase projects.
`firebase_list_apps / firebase_create_app / firebase_get_sdk_config / firebase_create_android_sha`	Manage iOS, Android, and Web apps registered to a Firebase project, including SHA cert hashes and SDK config retrieval.
`firestore_query_collection / get_document / add_document / update_document / delete_document / list_documents / list_collections`	Full CRUD plus listing against Firestore documents and collections.
`firestore_create_database / get_database / list_databases / update_database / delete_database`	Manage Firestore database instances.
`firestore_create_index / get_index / list_indexes / delete_index`	Manage Firestore composite indexes.
`realtimedatabase_get_data / realtimedatabase_set_data`	Read and write data at a Realtime Database location.
`auth_get_users / auth_update_user / auth_set_sms_region_policy`	Retrieve Firebase Auth users by UID or email, disable/enable accounts, set custom claims, and configure SMS region allow/deny lists.
`functions_list_functions / functions_get_logs`	List deployed Cloud Functions and fetch their logs with advanced filters.
`storage_get_object_download_url`	Get a download URL for a Cloud Storage object.
`messaging_send_message`	Send a Firebase Cloud Messaging message to device tokens or topics.
`remoteconfig_get_template / remoteconfig_update_template`	Retrieve, publish, or roll back Remote Config templates.
`crashlytics_get_issue / list_events / batch_get_events / list_notes / create_note / delete_note / get_report / update_issue`	Inspect Crashlytics issues and events, generate reports, and manage issue notes and state.
`apphosting_list_backends / apphosting_fetch_logs`	List App Hosting backends and fetch backend/build logs.
`dataconnect_build / dataconnect_list_services / dataconnect_execute`	Compile schemas, list services, and execute GraphQL operations against Firebase Data Connect (PostgreSQL).
`firebase_get_security_rules / firebase_validate_security_rules`	Retrieve and syntactically validate security rules for Firestore, Storage, and Realtime Database.
`firebase_init`	Initialize Firebase services (Firestore, Data Connect, Realtime Database, AI Logic) in a project.
`firebase_get_environment / firebase_update_environment`	Inspect and update the current CLI environment (active project, account).
`developerknowledge_search_documents / answer_query / get_documents`	Search and retrieve Google/Firebase developer documentation, with grounded answer generation (quota limited).

Setup Guide

Prerequisites

Node.js and npm installed
A Google account with access to one or more Firebase projects
Firebase CLI authentication (run firebase login once, or use Application Default Credentials for service accounts)

Install / Run

The server runs from the firebase-tools npm package. No separate install is needed if you use npx:

npx -y firebase-tools@latest mcp

Claude Desktop

Edit claude_desktop_config.json (Settings > Developer):

{
  "mcpServers": {
    "firebase": {
      "command": "npx",
      "args": ["-y", "firebase-tools@latest", "mcp"]
    }
  }
}

Cursor

Add to .cursor/mcp.json or ~/.cursor/mcp.json:

{
  "firebase": {
    "command": "npx",
    "args": ["-y", "firebase-tools@latest", "mcp"]
  }
}

VS Code Copilot

Add to .vscode/mcp.json:

{
  "servers": {
    "firebase": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "firebase-tools@latest", "mcp"]
    }
  }
}

Claude Code

claude mcp add firebase npx -- -y firebase-tools@latest mcp

Optional flags

--dir ABSOLUTE_PATH points to a directory containing firebase.json
--only feature1,feature2 restricts which tool groups load (e.g. auth,firestore,storage)

Example:

{
  "firebase": {
    "command": "npx",
    "args": [
      "-y",
      "firebase-tools@latest",
      "mcp",
      "--dir", "/Users/you/my-project",
      "--only", "auth,firestore,crashlytics"
    ]
  }
}

Inspecting capabilities

npx firebase-tools@latest mcp --generate-tool-list
npx firebase-tools@latest mcp --generate-prompt-list
npx firebase-tools@latest mcp --generate-resource-list

Use Cases

Query and mutate Firestore documents from a chat session: pull a user record by email, update a custom claim, or add a new entry without writing CRUD boilerplate
Investigate Crashlytics issues conversationally: list top events for an app, fetch a specific issue, generate a report, and annotate it with notes
Tail Cloud Functions logs and App Hosting build logs while debugging a failing deploy
Generate and validate Firestore or Cloud Storage security rules, then deploy them via /firebase:deploy
Bootstrap a new project end to end: create the project, register a web app, retrieve SDK config, and initialize Firestore, Auth, and AI Logic

Example Prompts

"List all Firestore documents in the orders collection where status == 'pending' and were created in the last 24 hours."
"Show the top Crashlytics issues for my Android app this week and summarize the stack traces."
"Find the Firebase Auth user with email alice@example.com and set a custom claim role: admin."
"Fetch the last 200 log entries from the sendWelcomeEmail Cloud Function and tell me why it's failing."
"Generate Firestore security rules so only authenticated users can read their own /users/{uid} document, then validate them."

Pros

Official, maintained by the Firebase team and shipped inside the firebase-tools CLI
Very broad surface area: Firestore, Auth, Functions, Storage, RTDB, Data Connect, Remote Config, Crashlytics, App Hosting, FCM
Reuses existing Firebase CLI credentials, no extra API keys to manage
--only flag lets you scope tools per project, plus prebuilt slash command prompts for common workflows

Limitations

Requires Node.js and a Firebase CLI login; service account setups need Application Default Credentials configured
Large tool count can crowd a model's context window unless you scope with --only
Some advanced surfaces (Performance Monitoring, A/B Testing, App Distribution) are listed as supported services but have limited direct tool coverage

Alternatives

Supabase MCP server for Postgres + Auth + Storage workflows
MongoDB MCP server if your data lives in Atlas instead of Firestore
Community Firestore-only MCP servers, for users who want a smaller surface than the full Firebase CLI