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Flux 2 JSON prompt builder,

1

KI

kiko9

Bronze Tier Support Badge November 2024

Nov 27, 2025

tool guide
flux2promptjsoncomfyui
Flux 2 JSON prompt builder,

FLUX 2 Prompt Builder

A Visual Prompt Building Tool for AI Image Generation

Hey Civitai community!

We're excited to share a project we've been working on: FLUX 2 Prompt Builder - a visual tool for crafting structured, professional-quality prompts for AI image generation.

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What Is It?

FLUX 2 Prompt Builder is a ComfyUI-inspired visual interface that helps you build detailed, structured prompts with precise control over:

  • Camera Settings - Angle, shot distance, focal length, aperture, ISO, and focus

  • Camera/Film Stock Database - Authentic camera models and film stocks for realistic rendering

  • Professional Lighting - Natural light, studio setups, dramatic/cinematic options

  • Composition - Rule of thirds, golden ratio, leading lines, and more

  • Color Palettes - Build your palette visually with multiple picker options

  • Mood Presets - Emotional tones and visual aesthetics

  • Style Presets - Photography, painting, illustration, drawing, 3D rendering

The tool outputs structured JSON prompts that give you unprecedented control over your image generation.

Why We're Sharing Early

We're building this as a ComfyUI custom node that will integrate directly into your workflows. But here's the thing - the JSON prompting system turned out to be so powerful on its own that we didn't want to keep it locked away while we work on the node integration.

So we're releasing this standalone MVP for the community to use right now!

How to Use It

Option 1: Just Open the HTML File

The simplest approach - download and open flux2-prompt-node-v2.html in your browser. That's it. No installation required.

Option 2: Run the Node.js App (Full Features)

cd app
./start.sh
# Open http://localhost:3000

Features at a Glance

  • 20+ Photography Presets - Intimate portraits, landscapes, street photography, product shots

  • Real-time JSON Output - See your prompt structure as you build

  • Image-based Color Picking - Drop any image and pick colors directly from canvas

  • Extensive Preset Library - Cameras, lighting, composition, moods, and styles

What's Coming

The ComfyUI custom node is in development and will:

  • Integrate directly into ComfyUI workflows

  • Output structured prompt data to image generation nodes

  • Maintain all features of the standalone version

Get It Now

GitHub: https://github.com/ComfyAssets/kiko-flux2-prompt-builder

Clone it, fork it, contribute to it - we'd love your feedback and contributions!

We built this for the AI art community. Let us know what you think, what features you'd like to see, and how you're using it in your workflows.

Happy generating!

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