ComfyUI DriveSend Node

A ComfyUI custom node for uploading output files to Google Drive with optional encryption. Automatically monitors your output folder and uploads images/videos to your Google Drive.

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⚠️ Important: Authentication Requirements

DriveSend supports two authentication methods, each with different requirements:

Method	Account Type	Cost	Token Expiry	Recommended For
Service Account	Google Workspace only	~$7+/month	Never expires	Business/paid users
OAuth 2.0	Personal Gmail	Free	Auto-refreshes*	Personal/free users

* OAuth tokens auto-refresh on each pod startup, effectively working like permanent credentials.

Why These Limitations?

• Service Accounts have 0 GB storage quota on personal Gmail accounts. Google blocks uploads entirely.
• Google Workspace ($7+/month) provides Shared Drives where service accounts can upload.
• OAuth 2.0 works with personal Gmail but requires initial browser authorization.

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📤📦 Features

• DriveSend AutoUploader Node - Automatically uploads new files to Google Drive

  • Monitors output folder in real-time
  • Supports: .png, .jpg, .jpeg, .webp, .gif, .mp4, .avi, .mov
  • Optional AES-128 encryption before upload
  • SHA256 checksum verification
  • Queue system for reliable uploads

• DriveSend Setup Node - Configures authentication and credentials

  • Generates OAuth refresh tokens
  • Outputs credentials for RunPod environment variables
  • Optional encryption key generation

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💾 Installation

cd ComfyUI/custom_nodes/
git clone https://github.com/machinepainting/ComfyUI_DriveSendNode.git
pip install -r ComfyUI_DriveSendNode/requirements.txt

Restart ComfyUI after installation.

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🔧 Google Cloud Setup (Required for Both Methods)

Step 1: Create Google Cloud Project

1. Go to Google Cloud Console
2. Sign in with your Google account
3. Click Select a project (top, next to "Google Cloud" logo) → New Project
4. Name it (e.g., ComfyUI-DriveSend) → Click Create
5. Make sure your new project is selected (check dropdown at top)

Step 2: Enable Google Drive API

1. Go to APIs & Services → Library (left sidebar)
2. Search for Google Drive API
3. Click on it → Click Enable

Step 3: Create OAuth Credentials

1. Go to APIs & Services → Credentials (left sidebar)
2. Click + Create Credentials → OAuth client ID
3. If prompted, configure the OAuth consent screen:
   • User Type: External → Click Create
   • App name: DriveSend
   • User support email: Your email
   • Developer contact: Your email
   • Click Save and Continue through all steps
4. Back in Credentials, click + Create Credentials → OAuth client ID
5. Application type: Desktop app
6. Name: DriveSend
7. Click Create
8. Download JSON and save as client_secret.json in the DriveSend node folder:

   ComfyUI/custom_nodes/ComfyUI_DriveSendNode/client_secret.json
   

Step 4: Add Yourself as Test User

1. Go to APIs & Services → OAuth consent screen
2. Under Test users, click + Add Users
3. Add your Gmail address
4. Click Save

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🔐 Option A: OAuth 2.0 Setup (Personal Gmail - FREE)

Best for: Personal Gmail accounts, RunPod users who want free Google Drive uploads.

How It Works

OAuth uses a refresh token that auto-refreshes on every pod startup. You authorize once, and it works indefinitely (as long as you don't revoke access).

Local Setup

1. Add the DriveSend Setup node to your workflow
2. Configure:
   • auth_method: oauth
   • storage_method: display_only (for cloud) or env_file (for local)
   • encryption_key_method: Your preference
3. Run the node
4. A browser window opens - sign in and authorize the app
5. Copy the credentials from the console output

RunPod Setup

1. Complete local setup first to get your refresh token

2. In RunPod, create these Secrets:

   Secret Name	Value
   GOOGLE_CLIENT_ID	Your OAuth client ID
   GOOGLE_CLIENT_SECRET	Your OAuth client secret
   GOOGLE_REFRESH_TOKEN	The refresh token from setup
   GOOGLE_DRIVE_FOLDER_ID	Your Drive folder ID
   comfyui_encryption_key	(Optional) Your encryption key

3. Add Environment Variables to your pod template:

   • GOOGLE_CLIENT_ID → {{ RUNPOD_SECRET_GOOGLE_CLIENT_ID }}
   • GOOGLE_CLIENT_SECRET → {{ RUNPOD_SECRET_GOOGLE_CLIENT_SECRET }}
   • GOOGLE_REFRESH_TOKEN → {{ RUNPOD_SECRET_GOOGLE_REFRESH_TOKEN }}
   • GOOGLE_DRIVE_FOLDER_ID → {{ RUNPOD_SECRET_GOOGLE_DRIVE_FOLDER_ID }}
   • comfyui_encryption_key → {{ RUNPOD_SECRET_comfyui_encryption_key }}

4. Deploy your pod and add the DriveSend AutoUploader node with:

   • auth_method: oauth
   • run_process: True

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🏢 Option B: Service Account Setup (Google Workspace - PAID)

Best for: Google Workspace subscribers who want simpler, permanent authentication.

Requirements:

• Google Workspace account (~$7+/month)
• Custom domain (e.g., yourbusiness.com)

Why Service Account Requires Google Workspace

Service accounts have 0 GB storage quota. On personal Gmail, uploads fail immediately with "storageQuotaExceeded". Google Workspace provides Shared Drives where service accounts CAN upload.

Setup Steps

1. Go to IAM & Admin → Service Accounts
2. Click + Create Service Account
3. Name it (e.g., comfyui-uploader) → Click Create and Continue → Done
4. Click on the service account → Keys tab → Add Key → Create new key → JSON
5. Rename downloaded file to service_account.json
6. Place in: ComfyUI/custom_nodes/ComfyUI_DriveSendNode/service_account.json

Create a Shared Drive

1. In Google Drive, click Shared drives (left sidebar)
2. Click + New to create a Shared Drive
3. Add the service account email as a Content Manager
4. Get the Shared Drive ID from the URL

RunPod Configuration

Create secrets and environment variables similar to OAuth setup, but use:

• GOOGLE_SERVICE_ACCOUNT_JSON (base64-encoded JSON)
• GOOGLE_DRIVE_FOLDER_ID (Shared Drive ID)

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📁 Getting Your Folder ID

1. Open Google Drive
2. Navigate to your target folder (or Shared Drive)
3. Look at the URL:

   https://drive.google.com/drive/folders/XXXXXXXXXXXXXXXXX
   

4. Copy the long string after /folders/ - that's your Folder ID

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🔒 Encryption (Optional)

DriveSend supports AES-128 encryption for files before upload.

Enable Encryption

1. In DriveSend Setup node, set encryption_key_method to Display Only or save to .env
2. Run the setup node to generate a key
3. Save the key securely (you'll need it to decrypt files)
4. In DriveSend AutoUploader, set enable_encryption to True

Decrypt Files Locally

Use the scripts in the /scripts/ folder:

macOS:

./scripts/decrypt_folder_mac.sh

Windows:

python scripts/decrypt_folder_win.py

Linux:

./scripts/decrypt_folder_linux.sh

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🛠️ Troubleshooting

"storageQuotaExceeded" Error

• Cause: Using service account with personal Gmail
• Fix: Use OAuth instead, or upgrade to Google Workspace

"invalid_grant" Error

• Cause: Refresh token expired or revoked
• Fix: Run setup node again to get new refresh token

"Access blocked: App not verified"

• Cause: OAuth consent screen in testing mode
• Fix: Add your email as a test user (Step 4 in Google Cloud Setup)

Files not uploading

• Check: Console output for error messages
• Check: Folder ID is correct
• Check: Auth credentials are set in environment variables

Browser doesn't open for OAuth

• Cause: Running on headless server (RunPod)
• Fix: Complete OAuth setup locally first, then copy credentials to RunPod

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📊 Comparison: DriveSend vs DropSend

Feature	DriveSend (Google Drive)	DropSend (Dropbox)
Free with personal account	✅ OAuth only	✅ Yes
Service account support	⚠️ Workspace only	N/A
Storage (free tier)	15 GB	2 GB
Token management	Auto-refresh	Auto-refresh
Setup complexity	Medium	Easy

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🧪 Tested On

• Python 3.10 / 3.11
• ComfyUI (Feb 2026)
• RunPod GPU instances
• Google Drive API v3

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License

MIT