> 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/chroma.md).

# Chroma credentials

You can use these credentials to authenticate the following nodes:

* Chroma Vector Store

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

Create and run a [Chroma](https://www.trychroma.com/home) instance. Refer to the [Running Chroma in Client-Server Mode](https://docs.trychroma.com/docs/run-chroma/client-server) for more information.

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

* API key
* Instance URL

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

Refer to [Chroma's documentation](https://docs.trychroma.com/docs/overview/getting-started) for more information about the service. Also refer to [Chroma Cloud](https://docs.trychroma.com/cloud/getting-started) for using cloud instance.

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

View n8n's [Advanced AI](https://github.com/n8n-io/n8n-docs/blob/main/advanced-ai/index.md) documentation.

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

To configure this credential, you'll need a [Chroma](https://www.trychroma.com/) account. You'll also need the following:

* An **API Key**
* Your **Tenant ID**
* Your **Database Name**

To set it up:

1. Go to the **Cloud Dashboard**.
2. Create a **Database**
3. Click **Settings** for the database you want the access to.
4. Click **Create API key and copy code**
5. Enter your **API Key**, **Tenant ID** and **Database Name** to n8n credential

## Using Instance URL <a href="#using-instance-url" id="using-instance-url"></a>

To configure this credential, you'll need:

* **Base URL:** The base URL of your Chroma instance. The default value is `http://localhost:8000`


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