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

# Merge

> Combines multiple lists into a single unified list

Combines multiple lists into a single unified list. Use this to join, blend, or union data from sources like Google Ads, Meta Ads, etc. For best results, standardize field names beforehand using the rename\_fields node.

|                     |              |
| ------------------- | ------------ |
| **App**             | List Tools   |
| **Operation ID**    | `list_merge` |
| **Type**            | Action       |
| **Connection**      | None         |
| **Credits per run** | Free         |

## Inputs

| Field   | Type         | Required | Default | Description                                                                                                                                                                                                         |
| ------- | ------------ | -------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `lists` | array of any | Yes      | -       | Add multiple lists that you want to combine into one, this will be mainly the output of upstream nodes in the workflow. Don't worry about data conversion, it will be handled automatically based on the list type. |

## Output

**Type**: `List`

Returns combined list from all inputs.

**Fields**: dynamic (depend on the inputs)