# Rename Keys - Workflow node | Docs - nodulz

Source: https://nodulz.com/docs/nodes/rename_keys

Language: en

Rename keys while preserving values and other fields

## Usage and specifics

Define mappings between source and destination keys. Check nested keys and collisions using a representative item before processing a batch.

Technical type : `rename_keys`. Runtime : `nodulz`.

## Credentials and prerequisites

This node defines no dedicated external credential. Remote sources or execution targets may still need their own access credentials.

See the [credentials guide](/docs/credentials) if a remote source or execution target requires access.

## Parameters

Names below are technical keys. Defaults are not a ready-to-run configuration: complete fields required by your operation. Paths containing [] describe list items; some fields depend on the selected mode.

| Parameter | Type | Default | Values / limits |
| --- | --- | --- | --- |
| `source` | `string` | `""` | - |
| `fields` | `array` | `[]` | - |
| `fields[].from` | `string` | - | -; min 1 |
| `fields[].to` | `string` | - | -; min 1 |

## Configuration help

| Setting | Purpose and guidance |
| --- | --- |
| `source`<br>Source | Object or list of objects to rename. Empty: previous node data. Lists in items or body are recognized automatically. Output: items and count. |

## Initial configuration

Initial catalog configuration example, to adapt before running. Keep secrets in credentials.

```json
{
  "source": "",
  "fields": []
}
```

## Verification

Test with representative data. Check node output in the inspector and logs, then use editor mapping for downstream fields. A trigger test with a simulated payload does not validate external service delivery.

See also : [Expressions and data](/docs/expressions), [Executions](/docs/executions), [Node catalog](/docs/nodes).

## Explore further

- [Features - nodulz](https://nodulz.com/product/overview)
- [Node catalog - nodulz](https://nodulz.com/product/catalog)
- [MCP server - nodulz](https://nodulz.com/product/mcp)
- [Pricing - nodulz](https://nodulz.com/pricing)
- [Use cases and workflow automation - nodulz](https://nodulz.com/use-cases)
- [Choose what your workflows can do. - nodulz](https://nodulz.com/compare)
- [Documentation - nodulz](https://nodulz.com/docs)