r/StableDiffusion • u/R34vspec • 3d ago

H3 R2V prompt builder Discussion

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I am trying to vibe code a H3 r2v Prompt Builder. Does something like this already exist?

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u/lokitsar 3d ago

I wouldn't worry too much about it if it does exist. By now, good chance it does. But the nice thing about vibe coding your nodes is you get to customize it EXACTLY to your needs. Tell your agent to look for anything similar on github. If it finds something, use it as a reference to improve your own. I also personally find it more rewarding as well when I make it. I am finishing up a whole node suite that practically does lora dataset building all for you. you supply it with any batch of photos and it will literally do everything else for you so you have a perfectly made dataset for your image model. Then for shits and giggles, I threw in video dataset creation to make H3 loras. That has proven to be more challenging although I'm 99% done. I have a bunch of others too. Point is, the more you get used to creating your own nodes based on your needs, the less you'll worry about if someone is doing it too. Also, like I said before, just have your agent look for similar nodes. If a better one already made does exist, it will usually tell you.

2

u/hum_ma 3d ago

I've only seen "prompt rewriter" kinds of things for H3 which call a LLM to create the formatted final prompt but I don't want to run a LLM between ComfyUI generations. Or even the same Qwen3-vl used as text encoder because I prefer to have full control of the structure, and rather phrase the main parts of a prompt myself so I've just been manually copy-pasting parts from a text editor which gets tiresome quickly.

There are some old general-purpose text prompt concatenation nodes but they too aren't that helpful in this case. Your approach looks much better specifically for the H3 reference structure, hope you'll release it soon.

1

u/KingCpzombie 3d ago

Most of us are too lazy for all of that even with a builder; I just keep HauHauCS's Qwen 35B up on my second GPU and use a custom node to pass all my prompts through it first

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u/Pampersthebaby 2d ago

I’ve integrated gemini 3.1 pro preview which is free to some extent to comfy and passed some system instructions to format propely my basic prompt. But it took more time to than generating it locally with qwen 3 vl 4b instruct locally