Open-Sourcing 'Shadow Negative': Enabling Negative Prompting for MiniMax H3
JackKerawock · reddit · 2026-08-14
A developer has released 'Shadow Negative', an experimental ComfyUI node that brings negative prompting to the MiniMax H3 model, which natively lacks this feature. Borrowing from the concept of NAG (Negative Attention Guidance), the node runs a lightweight "shadow" attention pass during normal generation. This pushes video/audio attention away from unwanted directions without requiring a full second denoising pass.
The author notes that because the tool patches H3's internal doubleblocks, it may conflict with acceleration patches like TeaCache or EasyCache. It is recommended to test with caching disabled and a fixed seed.
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