Item List Output Parser

Make an AI node answer with a list of items instead of a paragraph.

What it does

Item List Output Parser is not a step on its own: it has no output port and never runs by itself. You plug it into the Output Parser slot of an AI node, and that node uses it.

The AI node tells the model to answer with comma-separated values, such as foo, bar, baz. The parser then splits the reply at the commas and returns a list of text items. The format is fixed: you cannot change the separator.

When to use it

• Get keywords, tags or topics for a piece of text.
• Ask for a few ideas (titles, subject lines) and handle each one separately.
• Feed a list into Split Out to get one item per entry.

When you need named fields or numbers, use Structured Output Parser.

Inputs and settings

Réglage	Type	Ce que cela fait
Format note (informational)	Text	The model is instructed to return a comma-separated list, e.g. "foo, bar, baz". This field is not sent to the parser, it is only shown as a reminder in the editor.

There is nothing to set. Use the Prompt of the AI node to say how many items you want and what they should be.

Outputs

This node has no output port. It plugs into a slot on another node instead of passing items along.

• Output Parser slot of Tools Agent, Q&A Agent, RAG Agent, Basic LLM Chain, Information Extractor
• Base Parser slot of Auto-fixing Output Parser

On the node it is plugged into, response becomes a list of text, for example ["pricing", "onboarding", "support"].

Dependencies and credentials

None. This node needs no connection and has no slots for other nodes.

Example workflow

1. Get All Text reads the article on the current tab, with Output field name text.
2. Basic LLM Chain with Prompt Give 5 keywords for this article: {{ $input.text }}, and an OpenAI model on its Model slot.
3. Item List Output Parser connected to the Output Parser slot of Basic LLM Chain.
4. Split Out with Field To Split Out response turns the list into one item per keyword.

Common issues

• You get one long item instead of several. The model answered with line breaks or bullets instead of commas. Ask for “a comma-separated list” in the prompt, or use a stronger model.
• An item contains a comma. Commas always split items. Use Structured Output Parser with a list example such as { "items": ["a"] } instead.

Related nodes

• Structured Output Parser: named fields in JSON.
• Auto-fixing Output Parser: retry with a model when parsing fails.
• Split Out: one item per list entry.
• Basic LLM Chain: the simplest node to plug it into.