ComfyUI custom nodes: selectors, dual-stack subject/scene automation, text utilities, optional LoRA bypass, prompt library, Lazy Image Loader, Lazy MiniMax All-in-One (H3), Lazy Switch (float/int/text), Lazy Docs (Markdown viewer), and LazyPrompt (multi-target prompt engineer + optional vision). MIT licensed.

Nodes (summary)

| Node | What it does | Full guide | |------|----------------|------------| | Subject Selector | Load .txt from subjectselector/SubjectFiles/ (recursive). | docs/nodes/subject-selector.md | | Scenario Selector | Load .txt from scenarioselector/ScenarioFiles/ (recursive). | docs/nodes/scenario-selector.md | | Lazy-subject-and-scene-automation | One node: one subject + two scenario files (up to 6 scenario LoRA sets), model_high / clip_high required (single-model Z-Image, Krea2, Flux, etc.) or full Wan-style high/low dual stack when model_low / clip_low are wired. prompt, keywords, subject_description, prompt_override, selector (MiniMax workflow / reference paths). Optional global_selector_input. Live editors on the node (queue uses pane text, not disk); Save edits to .txt; scenario 2 strength sliders override [LoraHighA] / [LoraLowA] model strength. Uses lazy_subject_scene_automation/SubjectFiles and …/ScenarioFiles. | docs/nodes/lazy-subject-scene-automation.md | | Lazy Global Selector | One dropdown (T2V / I2V / FL2V / R2V) that fans out to Image Loaders, SAS, Prompt Engineer, MiniMax, and Model Switcher. | docs/nodes/lazy-global-selector.md | | Lazy Model Switcher | Pick fl2va vs ref2va UNET from the mode string for a single sampler path. | docs/nodes/lazy-model-switcher.md | | Lazy Switch (Float / Integer / Text) | Compare an upstream string to match; output on_true or on_false (typed). Unused branch is lazy-skipped. | docs/nodes/lazy-switch.md | | Lazy Docs | Split-pane Markdown docs from lazy_docs/Docs/ (optional subfolder). Index from frontmatter; click to load HTML/Raw. | docs/nodes/lazy-docs.md | | Text Split | Split by separator, regex, or tagged format ([Tag] headers). Auto-detects v2 subject/scenario files when the first line is [LoraHighA]; otherwise tagged_format or separator # for legacy graphs. | docs/nodes/text-split.md | | Optional Switch LoRA | Apply a LoRA or pass through when path is bypass / empty. | docs/nodes/optional-switch-lora.md | | Lazy Prompt Saver | Save / clone / delete named prompts in lazy_prompts.json. | docs/nodes/lazy-prompt-saver.md | | Lazy Image Loader | Load from input/: browse, drag-and-drop upload, open input folder, cover crop to popular ratios (default 9:16), optional megapixel resize (0.2–4.0 MP, multiple of 32), live drag-to-position preview. Optional workflow_role + global_selector_input hard-gates IMAGE. | docs/nodes/lazy-image-loader.md | | Lazy MiniMax All-in-One | MiniMax H3 conditioner: auto T2V / I2V / FL2V / R2V from bare mode or automation selector. Seconds → H3 frame length. Requires ComfyUI 0.30+ native H3. | docs/nodes/lazy-minimax-all-in-one.md | | LazyPrompt | Prompt Engineer (LTX / Wan / Flux / SDXL / Pony / SD 1.5 / MiniMax H3), Vision Describe (Qwen2.5-VL), Unload local model. LM Studio API uses native /api/v1/chat with OpenAI fallback. Mode-gated first/last/refs + selector_Out. Prompt [LoraH] / [LoraL] dynamic LoRA loads. | docs/nodes/lazyprompt.md |

Documentation index: docs/README.md · MiniMax template: docs/workflows/video_minimax_h3_global_selector.md

Installation

Via Comfy Registry (recommended)

Search for vsaan212/Vsaan212-workflow-utilities in the ComfyUI Manager and click Install.

Manual (development)

Clone into your Comfy install:

<ComfyUI root>/ └─ custom_nodes/ └─ vsaan212_workflow_utilities/ # this repo's custom_nodes/* contents

Restart ComfyUI.

Folder layout & auto-creation

On first load the pack creates missing folders as needed.

Standalone selectors

custom_nodes/vsaan212_workflow_utilities/
├─ scenarioselector/ScenarioFiles/
└─ subjectselector/SubjectFiles/

Lazy-subject-and-scene-automation (separate library)

custom_nodes/vsaan212_workflow_utilities/
└─ lazy_subject_scene_automation/
   ├─ ScenarioFiles/
   └─ SubjectFiles/

Put .txt files under the folder that matches the node you use. Dropdowns show relative paths without .txt (POSIX-style); nested subfolders are supported.

Subject & scenario file formats (selectors + Text Split)

Tagged (current): sections start with a [Tag] line (e.g. [LoraHighA], [desciption]), body on following lines until the next tag. Shipped examples: Bypass and format example.txt, none.txt.
Legacy: sections separated by a line containing only # (blank line, #, blank line).

Lazy-subject-and-scene-automation parses tagged files internally. The browser extension js/lazy_subject_scene_live.js adds editable subject / scenario / scenario 2 panes, Save edits, and scenario 2 high/low strength sliders (see lazy-subject-scene-automation.md). For Subject Selector / Scenario Selector → Text Split, v2 files (first line [LoraHighA]) split automatically; legacy # files use separator # unless you force tagged_format ON. Text Split details: text-split.md.

Lazy Image Loader reads from ComfyUI’s global input/ folder (not a pack subfolder). Extension js/lazy_image_loader.js adds the preview, pan crop, upload, and Open input folder button. Details: lazy-image-loader.md.

Example workflow (Lazy automation + LazyPrompt)

This pack is meant to replace long chains of selector + LoRA + text nodes with one automation node plus LazyPrompt for LLM expansion. The screenshot below is a typical LTX / LM Studio graph:

Lazy automation wired to LazyPrompt — Prompt Engineer and Vision Describe

Full node reference: lazy-subject-scene-automation-workflow.md · lazyprompt.md

How to wire it

1. Lazy-subject-and-scene-automation (center)

Connect model_high and clip_high (required). For single-model graphs (Z-Image, Krea2, one Flux/SDXL branch, etc.), leave model_low / clip_low unwired and use model_high / clip_high outputs downstream. For Wan-style dual stacks, also wire model_low / clip_low in and out.
Pick subject, scenario, and optional scenario_2 from the dropdowns (.txt under lazy_subject_scene_automation/SubjectFiles and …/ScenarioFiles).
Edit the live panes on the node; queue uses that text (not necessarily disk). Use Save edits to write back to .txt.
Optional prepend_text / post_text: wire STRING inputs (e.g. Lazy Prompt Saver for a saved prefix, User Text or any string node for postfix).
Outputs model_high / clip_high (and optional model_low / clip_low), keywords, prompt, subject_description, and prompt_override go to the rest of your graph.
Output prompt_override: wire when a scenario file uses a [Prompt] block (see below).
Single-model LoRA tip: put LoRAs on High slots (LoraHighA, …) or set Low slots to bypass — the low branch is skipped when model_low / clip_low are not connected.

2. LazyPrompt — Prompt Engineer (LLM)

user_input: your rough idea (or leave minimal when override carries the scene).
prompt_override_input ← prompt_override from the automation node when the scenario file defines [Prompt] instead of [desciption]. When connected/non-empty, this replaces user_input for the LM Studio / local HF request. You can also wire a Lazy Prompt Saver here for a fixed override string.
character ← subject_description from the automation node so the subject file’s [desciption] always reaches the LLM (including when prompt_override_input is set).
scene_context ← LazyPrompt — Vision Describe (or paste text manually).
image: optional reference frame for LM Studio (API) with a vision model loaded.
Optional: wire automation model_high / clip_high (and low) into Prompt Engineer when the Prompt / LLM emits [LoraH]…[/LoraH] / [LoraL]…[/LoraL] — those load after the LLM and are stripped from PROMPT.
Set target_model, model (e.g. LM Studio (API)), lm_studio_model, and token/temperature as needed.
Use output PROMPT (and model/clip outs when wired) downstream.

3. LazyPrompt — Vision Describe (optional)

image ← Lazy Image Loader or Load Image (or any IMAGE output).
scene_context → Prompt Engineer scene_context (or use character for subject-file text from automation).
Run once per reference frame; caption text steers the LLM without inventing the subject from scratch.

4. Scenario file tips for this graph

[desciption] → merged into automation prompt (CLIP-side text).
[Prompt] → sent on prompt_override only (LLM path); mutually exclusive with [desciption] in the same file. Optional closed [LoraH] / [LoraL] tags in that Prompt (or LLM output) are handled by LazyPrompt after enhancement.
{left|right} in scenario text → random choice each queue run.
scenario_2 + strength sliders → second scenario LoRA set and tunable [LoraHighA] / [LoraLowA] model strength.

5. Lazy Prompt Saver (optional)

Saved snippets for prepend_text, manual prompt_override_input, or ad-hoc user_input copy/paste — not required if you only use live editors and scenario files.

Python dependencies

Install from requirements.txt if your ComfyUI environment is missing anything (transformers, torch, qwen-vl-utils, Pillow, numpy, etc.).

Credits

LazyPrompt in this pack reuses and adapts MIT-licensed community work. Thank you to the original authors:

LoRa-Daddy — LTX-2 Easy Prompt (LTX2EasyPrompt-LD): cinematic LTX-style expansion, Qwen2.5-VL → scene_context, negative hints, LoRA triggers, dialogue / bypass, frame pacing, local Hugging Face + LM Studio patterns, output cleaning. LazyPrompt’s Prompt Engineer and Vision Describe descend from that design.
seanhan19911990-source — MIT-licensed LTX2EasyPrompt-LD tree (copyright in that project’s LICENSE); original upstream listing may no longer be on GitHub.
Brojakhoeman — MIT Gemma4Prompt (copyright in that project’s LICENSE): per-target system prompts (LTX 2.3, Wan 2.2, Flux.1, SDXL, Pony XL, SD 1.5), LTX screenplay variant, and environment presets merged into LazyPrompt.

vsaan212 maintains this integrated repository (selectors, lazy subject/scene automation, Lazy Prompt Saver, LazyPrompt merge, and packaging) separately from those upstreams.

Troubleshooting

New .txt files not in dropdown: Press R in ComfyUI or recreate the node. Lazy-subject-and-scene-automation also refreshes via /vsaan212/lazy-subject-scene/… when the node is created.
Same filename in two folders: Use the full relative path in the dropdown.
Line endings: Nodes normalize \r\n / \r to \n.
Lazy Image Loader missing from menu: Restart ComfyUI after updating the pack; node is under vsaan212/lazy.

License

MIT (see LICENSE)