Comfy Pilot MCP Server

Comfy Pilot

Talk to your ComfyUI workflows. Comfy Pilot gives Claude Code direct access to see, edit, and run your workflows — with an embedded terminal right inside ComfyUI.

Why?

Building ComfyUI workflows means manually searching for nodes, dragging connections, and tweaking values one at a time. With Comfy Pilot, you just describe what you want:

• "Build me an SDXL workflow with ControlNet" — Claude creates all the nodes, connects them, and sets the parameters
• "Look at the output and increase the detail" — Claude sees your generated image and adjusts the workflow
• "Download the FLUX schnell model and set up a workflow for it" — Claude downloads the model and builds a workflow from scratch

No copy-pasting node names. No hunting through menus. Just say what you want.

Installation

CLI (Recommended):

comfy node install comfy-pilot

ComfyUI Manager:

1. Open ComfyUI
2. Click Manager → Install Custom Nodes
3. Search for "Comfy Pilot"
4. Click Install
5. Restart ComfyUI

Git Clone:

cd ~/Documents/ComfyUI/custom_nodes && git clone https://github.com/ConstantineB6/comfy-pilot.git

Claude Code CLI will be installed automatically if not found.

Requirements

• ComfyUI
• Python 3.8+

Features

• MCP Server - Gives Claude Code direct access to view, edit, and run your ComfyUI workflows
• Embedded Terminal - Full xterm.js terminal running Claude Code right inside ComfyUI
• Image Viewing - Claude can see outputs from Preview Image and Save Image nodes
• Graph Editing - Create, delete, move, and connect nodes programmatically

Demo

https://github.com/user-attachments/assets/325b1194-2334-48a1-94c3-86effd1fef02

Usage

1. Restart ComfyUI after installation
2. The floating Claude Code terminal appears in the top-right corner
3. The MCP server is automatically configured for Claude Code
4. Ask Claude to help with your workflow:
   • "What nodes are in my current workflow?"
   • "Add a KSampler node connected to my checkpoint loader"
   • "Look at the preview image and tell me what you see"
   • "Run the workflow up to node 5"

MCP Tools

The MCP server provides these tools to Claude Code:

Tool	Description
get_workflow	Get the current workflow from the browser
summarize_workflow	Human-readable workflow summary
get_node_types	Search available node types with filtering
get_node_info	Get detailed info about a specific node type
get_status	Queue status, system stats, and execution history
run	Run workflow (optionally up to a specific node) or interrupt
edit_graph	Batch create, delete, move, connect, and configure nodes
view_image	View images from Preview Image / Save Image nodes
search_custom_nodes	Search ComfyUI Manager registry for custom nodes
install_custom_node	Install a custom node from the registry
uninstall_custom_node	Uninstall a custom node
update_custom_node	Update a custom node to latest version
download_model	Download models from Hugging Face, CivitAI, or direct URLs

Example: Creating Nodes

Create a KSampler and connect it to my checkpoint loader

Claude will use edit_graph to:

1. Create the KSampler node
2. Connect the MODEL output from CheckpointLoader to KSampler's model input
3. Position it appropriately in the graph

Example: Viewing Images

Look at the preview image and describe what you see

Claude will use view_image to fetch and analyze the image output.

Example: Downloading Models

Download the FLUX.1 schnell model for me

Claude will use download_model to download from Hugging Face to your ComfyUI models folder. Supports:

• Hugging Face (including gated models with token auth)
• CivitAI
• Direct download URLs

Terminal Controls

• Drag title bar to move
• Drag bottom-right corner to resize
• − Minimize
• × Close
• ↻ Reconnect session

Architecture

┌─────────────────────────────────────────────────────┐
│  Browser (ComfyUI)                                  │
│  ┌─────────────────┐  ┌──────────────────────────┐  │
│  │  xterm.js       │  │  Workflow State          │  │
│  │  Terminal       │  │  (synced to backend)     │  │
│  └────────┬────────┘  └────────────┬─────────────┘  │
│           │ WebSocket              │ REST API       │
└───────────┼────────────────────────┼────────────────┘
            │                        │
            ▼                        ▼
┌─────────────────────────────────────────────────────┐
│  ComfyUI Server                                     │
│  ┌─────────────────┐  ┌──────────────────────────┐  │
│  │  PTY Process    │  │  Plugin Endpoints        │  │
│  │  (claude CLI)   │  │  /claude-code/*          │  │
│  └─────────────────┘  └──────────────────────────┘  │
└─────────────────────────────────────────────────────┘
            │                        │
            │                        ▼
            │           ┌──────────────────────────┐
            └──────────▶│  MCP Server              │
                        │  (stdio transport)       │
                        └──────────────────────────┘

Files

• __init__.py - Plugin backend: WebSocket terminal, REST endpoints
• js/claude-code.js - Frontend: xterm.js terminal, workflow sync
• mcp_server.py - MCP server for Claude Code integration
• CLAUDE.md - Instructions for Claude when working with ComfyUI

Troubleshooting

"Command 'claude' not found"

Install Claude Code CLI:

macOS / Linux / WSL:

curl -fsSL https://claude.ai/install.sh | bash

Windows (PowerShell):

irm https://claude.ai/install.ps1 | iex

Windows (CMD):

curl -fsSL https://claude.ai/install.cmd -o install.cmd && install.cmd && del install.cmd

MCP server not connecting

The plugin auto-configures MCP on startup. Check ComfyUI console for errors, or manually add to ~/.claude.json:

{
  "mcpServers": {
    "comfyui": {
      "command": "python3",
      "args": ["/path/to/comfy-pilot/mcp_server.py"]
    }
  }
}

Terminal disconnected

Click the ↻ button to reconnect, or check ComfyUI console for errors.

License

MIT