> For the complete documentation index, see [llms.txt](https://docs.n8n.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.n8n.io/integrations/builtin/credentials/copper.md).

# Copper credentials

You can use these credentials to authenticate the following nodes:

* [Copper](/integrations/builtin/app-nodes/n8n-nodes-base.copper.md)
* [Copper Trigger](/integrations/builtin/trigger-nodes/n8n-nodes-base.coppertrigger.md)

## Prerequisites <a href="#prerequisites" id="prerequisites"></a>

Create a [Copper](https://www.copper.com/) account at the **Professional** or **Business** plan level.

## Supported authentication methods <a href="#supported-authentication-methods" id="supported-authentication-methods"></a>

* API key

## Related resources <a href="#related-resources" id="related-resources"></a>

Refer to [Copper's API documentation](https://developer.copper.com/) for more information about the service.

## Using API key <a href="#using-api-key" id="using-api-key"></a>

To configure this credential, you'll need:

* An **API Key**: Refer to the [Copper Generating an API key documentation](https://support.copper.com/en/articles/8823347-generating-an-api-key) for information on generating an API key.
* An **Email** address: Use the API key creator's email address