n8n-nodes-comfyui-media

This package provides n8n nodes to integrate with ComfyUI —
a powerful and modular stable diffusion GUI with a graph/nodes interface.

Features

• Execute full ComfyUI workflows from n8n
• Upload input media (images) to ComfyUI directly
• Generate images and videos from workflows
• Automatic output retrieval (images, gifs, mp4, webp, etc.)
• Progress monitoring and error handling
• API key authentication support
• Configurable timeout settings

Prerequisites

• n8n (version 1.0.0 or later)
• ComfyUI instance running and accessible
• Node.js 18 or newer

Installation

npm install n8n-nodes-comfyui-media

Node Types

1. ComfyUI Media Upload Node

Uploads an image from your workflow to ComfyUI so it can be used as an input in a workflow.

Settings

• API URL: The URL of your ComfyUI instance (default: http://127.0.0.1:8188)
• API Key: Optional API key if authentication is enabled
• Input Type: Choose between URL, Base64, or Binary
• Input Image: URL or base64 string (when using URL/Base64)
• Binary Property: Name of the binary property containing the image (when using Binary)

Outputs

• Returns uploaded image metadata:

  • name: Filename assigned in ComfyUI
  • subfolder: Storage subfolder
  • type: File type

2. ComfyUI Workflow to Media Node

Executes a ComfyUI workflow and retrieves all generated media (images & videos).

Settings

• API URL: The URL of your ComfyUI instance (default: http://127.0.0.1:8188)
• API Key: Optional API key if authentication is enabled
• Workflow JSON: The ComfyUI workflow definition in JSON format
• Timeout: Maximum time in minutes to wait for workflow execution

Outputs

The node outputs one item per generated media file. Each output includes:

• json

  • fileName: Name of the file
  • mimeType: Detected MIME type
  • data: Base64 encoded data
  • status: Execution status

• binary.data

  • fileName: Same file name
  • fileType: "image" or "video"
  • fileSize: File size in KB
  • fileExtension: File extension (png, jpg, gif, webp, mp4)
  • mimeType: MIME type

⚡ The node automatically distinguishes between images and videos and returns both.

Usage Examples

Upload + Execute Workflow

1. Add ComfyUI Media Upload node

   • Configure input type (URL, Base64, or Binary)
   • Upload the image to your ComfyUI instance

2. Add ComfyUI Workflow to Media node

   • Paste your exported workflow JSON from ComfyUI
   • Configure timeout if needed
   • Run execution to generate images/videos

3. Use the resulting binary outputs in downstream n8n nodes (e.g., save to disk, upload to cloud, send via email).

Error Handling

Both nodes include error handling for:

• API connection issues
• Invalid workflow JSON
• Invalid or missing input media
• Execution failures
• Timeout conditions

Development

# Install dependencies
pnpm install

# Build
pnpm build

# Dev mode (watch)
pnpm dev

# Lint
pnpm lint

# Auto-fix lint issues
pnpm lintfix

License

MIT