ToStringList

ToStringList is the string member of the bmad "make a list" family: it takes several individual STRING inputs and bundles them into a single Python list. Strings are the cheapest things in a ComfyUI graph, and they're also the most common thing you want to iterate over - prompts, seeds as text, filenames, wildcard chunks. This node is how you gather them onto one list wire for a loop or a list-consuming node.

The input that matters

inputs_len - the number of input sockets (default 2, up to 32). Set it to 3 and you get string_0, string_1, string_2. Output: a single STRING list. Match the count to what you feed; empty slots become empty strings in the list.

Why you'd reach for it

Prompt variation is the classic use. Collect a set of prompt strings, run them through the list, and iterate - whether that's pairing with the pack's list splitters (FromListGetStrings / FromListGet1String) or feeding a node that accepts a STRING list directly. It's also handy when several text-producing nodes (a "String" primitive, a wildcard expander, a filename builder) all feed one consumer that wants them collected.

The distinction matters here more than anywhere: a list of strings is a real Python list, and some nodes genuinely need that rather than individual text widgets or a batch. ToStringList makes the conversion trivial - set the count, plug in, done.

Installing

Ships in comfyui_bmad_nodes, bmad4ever's grab-bag of API, CV, and utility nodes. ComfyUI Manager - search "comfyui_bmad_nodes" (or "Bmad Nodes") - install, restart. Manual:

cd ComfyUI/custom_nodes
git clone https://github.com/bmad4ever/comfyui_bmad_nodes
cd comfyui_bmad_nodes
pip install -r requirements.txt

Restart after. No model downloads; pure Python, zero extra dependencies.

The whole "make a list" family is boring by design, and ToStringList is its most useful member precisely because text is what you shuffle around most. If you only install one of these, make it this one.