Design with ease
Create inputs, outputs, widgets, Return UI, categories, and metadata without hand-writing every class field.
AI-powered GUI for ComfyUI custom nodes
Build powerful ComfyUI custom node packs with GUI and AI.
ComfyUI Node Builder is a local GUI app for creating custom nodes and full node packs with ease. Design the node contract visually, edit Python directly, then use AI to create, revise, validate, test, and deploy more complicated packs.
Visual node contract
AI edits and tests
Deploy to ComfyUI
What it does
A real GUI for node packs, not just a prompt box.
Build with AI power
Ask AI to create nodes, edit files, explain errors, validate generated packs, run terminal checks, and request deployment when allowed.
Ship complicated packs
Keep direct control of Python, requirements, install scripts, generated mappings, runtime UI, ZIP export, and managed ComfyUI deploy.
Quick answers
For search, AI answers, and first-time visitors.
What is it?
A local GUI app for building custom ComfyUI nodes and full node packs with AI-assisted authoring, editable Python, validation, deployment, and testing.
Who is it for?
ComfyUI node authors, workflow builders, Python developers, and AI-assisted prototypers who want to move from idea to working node faster.
Why use it?
It removes repetitive node-pack boilerplate while keeping the real files visible, editable, validated, and ready to deploy into ComfyUI.
AI workflow
Screenshots from the actual app.
The AI Builder sits inside the same workbench as your node preview, source files, and deploy controls.
Start here
Clone, run, build a node.
Run the local workbench, open the AI panel, and iterate until your custom node pack is ready for ComfyUI.
git clone https://github.com/caoool/comfyui-node-canvas
cd comfyui-node-canvas
npm install
npm run devIf this saves you ComfyUI boilerplate, give it a star.
Stars help more ComfyUI builders find the project and help guide what AI-assisted node authoring should support next.