Dropbox MCP Server

A Model Context Protocol (MCP) server implementation for Dropbox integration, written in Go. This server allows AI assistants like Claude to interact with Dropbox through a standardized protocol.

Features

• OAuth 2.0 Authentication: Secure authentication with Dropbox using browser-based OAuth flow
• File Operations: List, search, download, upload, move, copy, and delete files
• Folder Management: Create folders and navigate directory structures
• Sharing: Create, list, and revoke shared links
• Version Control: View file revision history and restore previous versions
• Large File Support: Automatic chunked upload for files over 150MB

Prerequisites

• A Dropbox account
• Claude Desktop application
• Go 1.21 or higher (only for building from source)

Installation

Option 1: Install with Homebrew (macOS/Linux)

brew tap ngs/tap
brew install dropbox-mcp-server

Option 2: Install with Go

go install go.ngs.io/dropbox-mcp-server@latest

Option 3: Download Pre-built Binary

Download the latest release for your platform from the releases page.

# Example for macOS (Apple Silicon)
curl -L https://github.com/ngs/dropbox-mcp-server/releases/latest/download/dropbox-mcp-server_darwin_arm64.tar.gz | tar xz
sudo mv dropbox-mcp-server /usr/local/bin/

# Example for macOS (Intel)
curl -L https://github.com/ngs/dropbox-mcp-server/releases/latest/download/dropbox-mcp-server_darwin_amd64.tar.gz | tar xz
sudo mv dropbox-mcp-server /usr/local/bin/

# Example for Linux (x86_64)
curl -L https://github.com/ngs/dropbox-mcp-server/releases/latest/download/dropbox-mcp-server_linux_amd64.tar.gz | tar xz
sudo mv dropbox-mcp-server /usr/local/bin/

Option 4: Build from Source

git clone https://github.com/ngs/dropbox-mcp-server.git
cd dropbox-mcp-server
go build -o dropbox-mcp-server

Setup

⚠️ Security Notice

IMPORTANT: Each user must create their own Dropbox App. Never share or embed CLIENT_SECRET in binaries. See SECURITY.md for details.

1. Create a Dropbox App

1. Go to Dropbox App Console
2. Click "Create app"
3. Choose configuration:
   • Choose an API: Select "Scoped access"
   • Choose the type of access: Select "Full Dropbox" or "App folder" based on your needs
   • Name your app: Enter a unique name for your app
4. After creation, go to the app's settings page
5. Under "OAuth 2", add redirect URI: http://localhost:8080/callback
6. Note down your App key (Client ID) and App secret (Client Secret)
7. In the "Permissions" tab, ensure the following scopes are selected:
   • files.content.read - View content of your Dropbox files and folders
   • files.content.write - Edit content of your Dropbox files and folders
   • files.metadata.read - View information about your Dropbox files and folders
   • files.metadata.write - View and edit information about your Dropbox files and folders
   • sharing.read - View your shared files and folders
   • sharing.write - Create and modify your shared files and folders

2. Configure Claude Desktop

Option A: Using Claude MCP CLI (Recommended)

If you have Claude MCP CLI installed, you can register the server with a single command:

# Basic registration (replace with YOUR OWN App credentials)
claude mcp add dropbox dropbox-mcp-server \
  --env DROPBOX_CLIENT_ID=your_own_app_key \
  --env DROPBOX_CLIENT_SECRET=your_own_app_secret

# With custom binary path
claude mcp add dropbox /path/to/dropbox-mcp-server \
  --env DROPBOX_CLIENT_ID=your_own_app_key \
  --env DROPBOX_CLIENT_SECRET=your_own_app_secret

⚠️ Security: Use credentials from YOUR OWN Dropbox App. Never use shared credentials.

Option B: Manual Configuration

Add the following to your Claude Desktop configuration file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json Linux: ~/.config/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "dropbox": {
      "command": "dropbox-mcp-server",
      "env": {
        "DROPBOX_CLIENT_ID": "your_app_key_here",
        "DROPBOX_CLIENT_SECRET": "your_app_secret_here"
      }
    }
  }
}

Note:

• If you installed via Homebrew or placed the binary in /usr/local/bin, you can use just "command": "dropbox-mcp-server"
• If you built from source or downloaded to a custom location, use the full path: "command": "/path/to/dropbox-mcp-server"

3. Verify Installation

After configuration, restart Claude Desktop and verify the server is connected:

# List registered MCP servers (if using Claude MCP CLI)
claude mcp list

# Remove a server if needed
claude mcp remove dropbox

Usage

Initial Authentication

When you first use the Dropbox MCP server in Claude:

1. Use the dropbox_auth tool to authenticate
2. Your browser will open to Dropbox's authorization page
3. Log in and authorize the app
4. You'll be redirected to a success page
5. The authentication token will be saved to ~/.dropbox-mcp-server/config.json

Available Tools

Authentication

• dropbox_auth - Authenticate with Dropbox
• dropbox_check_auth - Check authentication status

File Operations

• dropbox_list - List files and folders
• dropbox_search - Search for files
• dropbox_get_metadata - Get file/folder metadata
• dropbox_download - Download file content
• dropbox_upload - Upload a file
• dropbox_create_folder - Create a new folder
• dropbox_move - Move or rename files/folders
• dropbox_copy - Copy files/folders
• dropbox_delete - Delete files/folders

Sharing

• dropbox_create_shared_link - Create a shared link
• dropbox_list_shared_links - List existing shared links
• dropbox_revoke_shared_link - Revoke a shared link

Version Control

• dropbox_get_revisions - Get file revision history
• dropbox_restore_file - Restore a file to a previous version

Example Commands in Claude

"Please authenticate with Dropbox"
"List all files in my Dropbox root folder"
"Search for PDF files containing 'invoice'"
"Upload this text to /Documents/notes.txt"
"Create a shared link for /Photos/vacation.jpg"
"Show me the revision history of /Documents/report.docx"

Configuration

The server stores configuration in ~/.dropbox-mcp-server/config.json:

{
  "client_id": "your_client_id",
  "client_secret": "your_client_secret",
  "access_token": "your_access_token",
  "refresh_token": "your_refresh_token",
  "expires_at": "2024-01-01T00:00:00Z"
}

Tokens are automatically refreshed when they expire.

Security Considerations

• The configuration file contains sensitive tokens and is stored with 0600 permissions
• Client credentials can be provided via environment variables instead of config file
• OAuth flow uses state parameter to prevent CSRF attacks
• All API calls use HTTPS

Troubleshooting

Authentication Issues

• Ensure redirect URI is correctly configured in Dropbox App Console
• Check that client ID and secret are correct
• Try deleting ~/.dropbox-mcp-server/config.json and re-authenticating

Permission Errors

• Verify your Dropbox app has the required scopes enabled
• Check file paths are correct (use forward slashes, start with /)

Connection Issues

• Ensure you have internet connectivity
• Check if Dropbox API is accessible from your network
• Review stderr output for detailed error messages

Development

Building from Source

go mod download
go build -o dropbox-mcp-server

Running Tests

go test ./...

Project Structure

dropbox-mcp-server/
├── main.go                 # MCP server implementation
├── go.mod                  # Go module definition
├── internal/
│   ├── auth/              # OAuth authentication
│   ├── config/            # Configuration management
│   ├── dropbox/           # Dropbox API client
│   └── handlers/          # MCP tool handlers
├── mcp.json               # MCP server metadata
└── README.md              # This file

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

MIT License - see LICENSE file for details

Support

For issues and questions, please open an issue on GitHub.