ComfyUI LoRA Prompt Switch

Custom nodes for ComfyUI that combine LoRA loading with prompt text injection and a boolean enable/disable switch. Chain multiple nodes together to build switchable LoRA+prompt stacks.

Features

• Toggle list UI for prompt tags — each trigger word gets its own enable/disable checkbox
• Compact lora+strength combo row — lora dropdown and strength in a single line
• Color feedback — nodes tint green when enabled, red when disabled
• Automatic comma chaining — trailing comma for clean multi-node prompt composition
• Notes field — store lora links, usage hints, or trigger word documentation
• Backward compatible — old workflows with plain text fields load correctly

Nodes

LoRA Prompt Switch

Loads a LoRA and appends prompt text when enabled. When disabled, model/clip and prompts pass through unchanged.

Inputs:

Input	Type	Description
model	MODEL	Base model
clip	CLIP	CLIP model
lora_name	dropdown	LoRA file to load
strength	FLOAT	LoRA strength (-10.0 to 10.0, default 1.0)
add_positive	toggle list	Positive prompt tags (each individually togglable)
add_negative	toggle list	Negative prompt tags (each individually togglable)
enable	BOOLEAN	(optional) Toggle this LoRA on/off, default on
positive_prompt	STRING	(optional) Incoming positive prompt to extend
negative_prompt	STRING	(optional) Incoming negative prompt to extend
notes	STRING	(optional) Notes, links, usage hints (not used in output)

Outputs: model, clip, positive_prompt, negative_prompt

Dual LoRA Prompt Switch

Same concept but for two model/clip pairs (e.g. high-noise and low-noise models in a dual-pass workflow). Each pair gets its own LoRA selection and strength. Prompt text is shared across both.

Inputs:

Input	Type	Description
model_high	MODEL	High-noise model
model_low	MODEL	Low-noise model
lora_high	dropdown	LoRA for high-noise model
strength_high	FLOAT	Strength for high-noise LoRA
lora_low	dropdown	LoRA for low-noise model
strength_low	FLOAT	Strength for low-noise LoRA
add_positive	toggle list	Shared positive prompt tags
add_negative	toggle list	Shared negative prompt tags
enable	BOOLEAN	(optional) Toggle on/off, default on
clip_high	CLIP	(optional) CLIP for high-noise model
clip_low	CLIP	(optional) CLIP for low-noise model
positive_prompt	STRING	(optional) Incoming positive prompt
negative_prompt	STRING	(optional) Incoming negative prompt
notes	STRING	(optional) Notes, links, usage hints

Outputs: model_high, clip_high, model_low, clip_low, positive_prompt, negative_prompt

Text Prompt Switch

A simple text switch node. Appends text to an input string when enabled, passes through unchanged when disabled. Chain multiple to compose prompts from togglable blocks. Tints green/red based on state.

Inputs:

Input	Type	Description
enable	BOOLEAN	Toggle on/off
text	STRING	Text to append when enabled
input_text	STRING	(optional) Incoming text to extend

Outputs: text

Installation

Clone or copy this folder into your ComfyUI custom_nodes directory:

ComfyUI/custom_nodes/comfyui-lora-prompt-switch/

Restart ComfyUI. The nodes appear under the loaders/lora and text categories.

Usage

1. Add a LoRA Prompt Switch node
2. Select a LoRA and set strength (shown as a compact combo row)
3. Add trigger words to the toggle list — paste comma-separated text to auto-split into entries
4. Toggle individual entries on/off with checkboxes
5. Chain multiple nodes by connecting model -> model and positive_prompt -> positive_prompt
6. Use the enable toggle or connect it to a boolean switch for quick on/off

Note

This project was mostly AI-generated using Claude Code.

License

MIT