Firebase MCP Server

What it does

The Firebase MCP Server (experimental) connects AI coding agents to your Firebase projects. Agents can manage projects and apps, explore and query Cloud Firestore data, manage authentication users, read security rules, send Cloud Messaging, and access crash analytics. It runs via the Firebase CLI and requires prior firebase login authentication.

Available tools

Tool	What it does
list_projects	List Firebase projects in your account
get_project	Get project configuration and metadata
list_apps	List apps (iOS, Android, Web) for a project
firestore_list_collections	List collections in a Firestore database
firestore_query	Run read queries against Firestore
auth_list_users	List authentication users
auth_get_user	Get user details by UID
get_security_rules	Read Firestore and Storage security rules
messaging_send	Send Cloud Messaging messages
crashlytics_*	Access crash analytics data

Tool names and availability may vary; use --only to limit which categories activate (e.g., firestore,auth).

Setup by tool

Cursor

First authenticate the Firebase CLI:

npx -y firebase-tools@latest login --reauth

Create .cursor/mcp.json in your project root:

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

Add --dir to specify the directory containing firebase.json if needed. Add --only firestore,auth to limit activated tools.

Claude Code

Add to your Claude configuration file:

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

VS Code / GitHub Copilot

Run firebase login first, then add the same configuration to your MCP client.

When to use this

• Firestore development: Agents query and explore Firestore data and collections during implementation
• Auth user management: Inspect users and troubleshoot auth flows
• Security rules: Read current rules before proposing changes
• Project setup: List projects and apps when scaffolding or documenting
• Crash analysis: Pull crash data into debugging conversations

Security considerations

• This is experimental; behavior may change without notice
• Firebase CLI uses your Google account; the agent inherits your project access
• Use only with development or staging projects, not production
• Limit tools with --only when possible to reduce the surface area
• Never commit Firebase config with sensitive data; use environment variables for CI