> ## Documentation Index
> Fetch the complete documentation index at: https://learn.workflow.dog/llms.txt
> Use this file to discover all available pages before exploring further.

# Join Lists

> Concatenate multiple lists into one.

**Join Lists** adds the contents of each input list to the result in order. It
removes only the outer list boundary; nested lists inside an input remain
nested.

## Input

| Input     | Type            | Required | Description                                    |
| --------- | --------------- | -------- | ---------------------------------------------- |
| **Lists** | Repeatable list | No       | Lists to join. The node starts with two slots. |

## Output

| Output     | Type | Description                          |
| ---------- | ---- | ------------------------------------ |
| **Joined** | List | All input items in input-list order. |

Joining `[1, 2]`, `[]`, and `[3]` returns `[1, 2, 3]`.