InstaSD API Input - Multi Line Text

InstaCTextML is the same trick as InstaCText - a string in, a string out, no API involved - with one difference that matters: the input is multiline. For a text-to-image workflow published through InstaSD, this is the node that becomes a proper, resizeable prompt box your visitors can type a full paragraph into.

The context: InstaSD (instasd.com) wraps a ComfyUI workflow in a public one-page app or API endpoint, and the InstaSD/API_inputs nodes in this pack are the inputs it exposes to end users. Prompts are the control you'll expose most, and for anything beyond a one-liner - full scene descriptions, comma-heavy tag lists, prompts with BREAK or weight syntax - you want the multiline version so people aren't fighting a single-line field.

What you set

• string - the text, defaulting to empty, with multiline: true in the schema. That flag is the entire difference from its single-line sibling: the on-canvas widget grows into a text area and line breaks survive the round trip.

Output is string (type STRING), passing the text through byte-for-byte. Wire it into a CLIP Text Encode for the positive prompt, or pair two of them for positive/negative conditioning.

A practical tip: multiline is also the better choice when your default prompt is a template or wildcard line you want the end user to edit rather than replace. And because line breaks are preserved, it plays nicely with nodes that parse multi-line input (wildcard expansions, split by line utilities) if you ever go that deep.

Install

cd ComfyUI/custom_nodes
git clone https://github.com/WaddingtonHoldings/ComfyUI-InstaSD

Restart ComfyUI, or install via ComfyUI Manager (search "InstaSD"). Dependencies are boto3, Pillow, requests, and numpy; nothing to download, no key to configure for this node.

Gotchas

• Locally it's a pass-through, same as every API-input node in the pack. The value only "appears" on a demo page once the workflow is published through InstaSD.
• Choose it deliberately: single-line InstaCText is the same node minus the multiline flag, so don't install both out of confusion - pick based on whether your prompt will ever contain line breaks.