Batch Prompts

The tedium of prompt testing is pasting a new prompt, queuing, waiting, pasting again. Batch Prompts automates the pasting: it reads a list of prompts from a text file and hands them to your workflow one at a time, advancing automatically on every run. Queue it once and let it chew through your whole list.

How it works

You keep a plain text file where prompts are separated by a line of three dashes (---):

a red convertible at golden hour
---
a blue sedan in the rain, Negative: rainy windshield, fog
---
a vintage motorcycle, studio lighting

The node loads the file, picks the prompt at the current index, and - the important part - increments that index after every execution. Each time you queue, you get the next prompt. Two flags control the loop: wrap_around sends you back to prompt #1 after the last one instead of dying, and auto_increment (on by default) is what makes it self-advancing in the first place; turn it off and it just holds a fixed index so you can step manually.

If split_negative is on (it is by default), it looks for a Negative: marker and splits the entry into separate positive and negative strings. That's the SDXL-style convention, and it saves you from hand-editing the file into two columns.

Inputs and outputs

The ones that matter:

• prompt_file - path to the text file. Relative paths resolve against ComfyUI's input directory, so a default of prompts.txt means ComfyUI/input/prompts.txt. Absolute paths work too.
• index - the current 0-based position. Setting it manually jumps straight to a specific prompt.
• reload_file (optional) - force a re-read from disk if you edited the file mid-run.

Outputs are the useful part: positive, negative, and full_prompt feed your text encoders; next_prompt shows what's coming up; and current_index / total_prompts / batch_info are there for conditioning or just for you to see where you are.

Installing it

It's part of the ComfyUI-KikoTools pack. ComfyUI Manager → search "ComfyUI-KikoTools" → Install → restart, then look under ComfyAssets → Text. Manual route:

cd ComfyUI/custom_nodes
git clone https://github.com/ComfyAssets/ComfyUI-KikoTools.git
cd ComfyUI-KikoTools
pip install -r requirements.txt

Restart ComfyUI. No models, no keys.

Gotchas

Three things bite people. First, file location: a bare filename like prompts.txt is looked up in ComfyUI/input, not next to your workflow - people drop the file somewhere else and get "No prompts found." Second, the separator must be at least three dashes; if your file has a stray line that doesn't split cleanly, the node treats it as part of the previous prompt. Third, split_negative only fires on the literal Negative: marker - if you used "negative prompt:" or a different label, you'll get everything dumped into positive. Also worth knowing: because each run uses a fresh file read unless you toggle reload_file, editing the file mid-batch sometimes needs a manual reload to take effect.