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How to generate images from a prompt without the node graph with HEISS UI

Install the HEISS UI launcher and get a prompt-to-picture loop running on top of ComfyUI.

Short answer: Download the zip for your system from the latest release on the HEISS UI GitHub page; then Unpack it and double-click Start HEISS UI (.bat on Windows, .command on macOS, .desktop on Linux), or run npm start in the folder; make sure ComfyUI is running; ComfyUI Desktop connects on its own, and other addresses are set under Settings › Connection. All steps.

  • Top pick
  • Content
  • Beginner
  • 30 minutes
  • From the README
  • Any agent

Authorization notice. HEISS UI is dual-use. Only use it on software, sites and systems you own or have explicit permission to test.

Who it is forA hobbyist or small creator with ComfyUI installed who wants to make pictures without wiring nodes by hand.

The problemComfyUI's node graph is powerful but slow to learn for everyday prompt-and-look work.

The outcomeYou write a prompt, pick a model, and see the picture render in a browser studio that runs every job on your own ComfyUI.

What you need first

  • A ComfyUI install that is running, such as ComfyUI Desktop, or reachable at a known address
  • A Windows, macOS (Apple Silicon) or Linux computer, or Node.js 20.9+ if you install from source
  • Enough disk space for the model files you choose to download

Steps

  1. Download the zip for your system from the latest release on the HEISS UI GitHub page.
  2. Unpack it and double-click Start HEISS UI (.bat on Windows, .command on macOS, .desktop on Linux), or run npm start in the folder.
  3. Make sure ComfyUI is running; ComfyUI Desktop connects on its own, and other addresses are set under Settings › Connection.
  4. Pick one of the 30 built-in model families and press Get all if it reports missing parts.
  5. Write a prompt and watch it render.

Prompt for your agent

Clone or unpack the HEISS-UI repo (github.com/tristmeister/HEISS-UI), start it with `npm start` from its folder, and confirm the studio opens in the browser. Then pick <model name> from the model menu, enter the prompt <prompt text>, and report the path of the rendered image in the gallery. Verify that the models list is populated, which means ComfyUI is connected.

Caveat. The studio only lists models and samplers after ComfyUI is connected, so a first run with nothing listed usually means ComfyUI is not running yet.

Use this in your AI agent

Ask your agent

Using the Deduped MCP, get the setup steps for tristmeister/HEISS-UI and "Generate images from a prompt without the node graph"

Add Deduped to Claude Code once

claude mcp add --transport http deduped https://dedupedai.com/mcp

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