> 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/serp.md).

# Serp credentials

You can use these credentials to authenticate the following nodes:

* [Serp](/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.toolserpapi.md)

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

Create a [SerpApi](https://serpapi.com/) account.

## 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 [Serp's API documentation](https://serpapi.com/search-api) for more information about the service.

View n8n's [Advanced AI](/build/integrate-ai.md) documentation.

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

To configure this credential, you'll need:

* An **API Key**

To get your API key:

1. Go to **Your Account >** [**API Key**](https://serpapi.com/manage-api-key).
2. Copy **Your Private API Key** and enter it as the **API Key** in your n8n credential.