Firebase MCP

Overview

• Firestore: Document database operations
• Storage: File management with robust upload capabilities
• Authentication: User management and verification

⚡ Quick Start

Prerequisites

• Firebase project with service account credentials
• Node.js environment

1. Install MCP Server

• Claude Desktop:

  ~/Library/Application Support/Claude/claude_desktop_config.json

• Augment:

  ~/Library/Application Support/Code/User/settings.json

• Cursor:

  [project root]/.cursor/mcp.json

Configure for npx (recommended)

{
  "firebase-mcp": {
    "command": "npx",
    "args": [
      "-y",
      "@gannonh/firebase-mcp"
    ],
    "env": {
      "SERVICE_ACCOUNT_KEY_PATH": "/absolute/path/to/serviceAccountKey.json",
      "FIREBASE_STORAGE_BUCKET": "your-project-id.firebasestorage.app"
    }
  }
}

Configure for local installation

{
  "firebase-mcp": {
    "command": "node",
    "args": [
      "/absolute/path/to/firebase-mcp/dist/index.js"
    ],
    "env": {
      "SERVICE_ACCOUNT_KEY_PATH": "/absolute/path/to/serviceAccountKey.json",
      "FIREBASE_STORAGE_BUCKET": "your-project-id.firebasestorage.app"
    }
  }
}

2. Test the Installation

🔥 Latest Features: Storage Upload (v1.3.3)

• storage_upload

  : Upload files from text, base64 content, or local file paths

• storage_upload_from_url

  : Import files directly from external URLs

Key Benefits

• Permanent Public URLs: All uploads generate non-expiring public URLs
• Content Type Detection: Automatic detection from file extensions and data
• Multiple Upload Methods: Flexible options for different use cases
• Rich Response Formatting: Clear, well-structured upload confirmations

Upload Methods

1. Local File Path (Recommended for all file types)

   {
     filePath: "my-report.pdf",
     content: "/path/to/local/file.pdf"
   }
   

2. Base64 Data URL (For smaller files)

   {
     filePath: "my-image.png", 
     content: "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAA..."
   }
   

3. Plain Text (For text files)

   {
     filePath: "readme.md",
     content: "# My README\n\nThis is a markdown file."
   }
   

4. External URL (Using storage_upload_from_url)

   {
     filePath: "document.pdf",
     url: "https://example.com/document.pdf"
   }
   

⚠️ Important: For binary files like images and PDFs, always use the direct file path method for best reliability.

🛠️ Setup & Configuration

1. Firebase Configuration

1. Go to Firebase Console → Project Settings → Service Accounts
2. Click "Generate new private key"
3. Save the JSON file securely

2. Environment Variables

• SERVICE_ACCOUNT_KEY_PATH

  : Path to your Firebase service account key JSON (required)

• FIREBASE_STORAGE_BUCKET

  : Bucket name for Firebase Storage (optional, defaults to

  [projectId].appspot.com

  )

3. Client Integration

Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json

VS Code / Augment

~/Library/Application Support/Code/User/settings.json

Cursor

[project root]/.cursor/mcp.json

📚 API Reference

Firestore Tools

firestore_add_document

collection

data

firestore_list_documents

collection

firestore_get_document

collection

id

firestore_update_document

collection

id

data

firestore_delete_document

collection

id

firestore_list_collections

firestore_query_collection_group

collectionId

Storage Tools

storage_list_files

directoryPath

storage_get_file_info

filePath

storage_upload

filePath

content

storage_upload_from_url

filePath

url

Authentication Tools

auth_get_user

identifier

💻 Developer Guide

Installation & Building

git clone https://github.com/gannonh/firebase-mcp
cd firebase-mcp
npm install
npm run build

Running Tests

npm install -g firebase-tools
firebase init emulators
firebase emulators:start

# Run tests with emulator
npm run test:emulator

# Run tests with coverage
npm run test:coverage:emulator

Project Structure

src/
├── index.ts                  # Server entry point
├── utils/                    # Utility functions
└── lib/
    └── firebase/              # Firebase service clients
        ├── authClient.ts     # Authentication operations
        ├── firebaseConfig.ts   # Firebase configuration
        ├── firestoreClient.ts # Firestore operations
        └── storageClient.ts  # Storage operations

🔍 Troubleshooting

Common Issues

Storage Bucket Not Found

1. Verify your bucket name in Firebase Console → Storage
2. Set the correct bucket name in

   FIREBASE_STORAGE_BUCKET

   environment variable

Firebase Initialization Failed

1. Check that your service account key path is correct and absolute
2. Ensure the service account has proper permissions for Firebase services

Composite Index Required

1. Look for the provided URL in the error message
2. Follow the link to create the required index in Firebase Console
3. Retry your query after the index is created (may take a few minutes)

📋 Response Formatting

Storage Upload Response Example

{
  "name": "reports/quarterly.pdf",
  "size": "1024000",
  "contentType": "application/pdf",
  "updated": "2025-04-11T15:37:10.290Z",
  "downloadUrl": "https://storage.googleapis.com/bucket/reports/quarterly.pdf?alt=media",
  "bucket": "your-project.appspot.com"
}

## File Successfully Uploaded! 📁

Your file has been uploaded to Firebase Storage:

**File Details:**
- **Name:** reports/quarterly.pdf
- **Size:** 1024000 bytes
- **Type:** application/pdf
- **Last Updated:** April 11, 2025 at 15:37:10 UTC

**[Click here to download your file](https://storage.googleapis.com/bucket/reports/quarterly.pdf?alt=media)**

🤝 Contributing

1. Fork the repository
2. Create a feature branch
3. Implement changes with tests (80%+ coverage required)
4. Submit a pull request

📄 License

🔗 Related Resources

• Model Context Protocol Documentation
• Firebase Documentation
• Firebase Admin SDK