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

# Unstructured Foundation installation for Codex Desktop

> Learn how to install Unstructured Foundation into Codex Desktop. You can then use Foundation to give Codex Desktop persistent access to your organization's knowledge without file uploads.

<Note>
  Unstructured Foundation is an Early Access product. **Unstructured must accept you into the Early Access program
  before you can begin using Foundation.**
  [Add your name to the Early Access interest list](https://unstructured.io/foundation-early-access).

  Unstructured is currently accepting a limited number of participants into the Early Access program at its discretion, with
  plans to expand access to a more general audience in the future.

  The following information is being provided to give you an advance preview of possible future functionality. Unstructured
  makes no express claims as to what extent this information will reflect the state of the product upon initial
  general availability.
</Note>

## Requirements

Before you begin, you must have the following:

* Acceptance by Unstructured into its Early Access program for Foundation.
  [Add your name to the Early Access interest list](https://unstructured.io/foundation-early-access).
  Do not begin this installation until you have received your Early Access acceptance email from Unstructured.
* A ChatGPT plan. [Sign up for ChatGPT](https://www.chatgpt.com/signup).
* Codex Desktop installed on your local development machine. [Install Codex Desktop](https://chatgpt.com/codex/).

## Set up Foundation

1. The Codex CLI must be installed on your local development machine. [Install the Codex CLI from your terminal](https://developers.openai.com/codex/cli).

   Even though you will be using Codex Desktop, you must also have the Codex CLI installed. This is because Codex Desktop relies on the Foundation MCP server plugin marketplace to already be installed. However, to install this marketplace, you must use the Codex CLI. You cannot use Codex Desktop to install this marketplace.

2. From your terminal, add the Foundation MCP server plugin marketplace:

   ```bash theme={null}
   codex plugin marketplace add Unstructured-IO/unstructured-foundation-marketplace
   ```

   If prompted, sign in to the Codex CLI.

3. Start Codex Desktop. If prompted, sign in to your ChatGPT account.

4. On the sidebar, click **Plugins**.

5. Click **Unstructured Foundation**.

6. Next to **Unstructured Foundation**, click **Add plugin**.

7. Click **Add plugin** again.

8. A web browser tab will appear, prompting you to begin authenticating with Foundation.

## Connect to and index your source

1. In the prompt box in Codex Desktop, enter the following prompt:

   ```text theme={null}
   $foundation:connect
   ```

2. Click the link that appears in the response.

   If the link does not appear, go to the following link in your web browser instead:
   [https://foundation.unstructured.io/connect](https://foundation.unstructured.io/connect)

3. If prompted, sign in to Foundation.

4. The **Connect sources to use Foundation** page appears.

   <img src="https://mintcdn.com/unstructured-53/iuQ6ZYz4UZ1tXQhy/img/foundation/new-source.png?fit=max&auto=format&n=iuQ6ZYz4UZ1tXQhy&q=85&s=35a33d98e8c2b827c886451c93b9e8fa" alt="Connecting to a new source from Codex Desktop" width="986" height="1402" data-path="img/foundation/new-source.png" />

   If this page does not appear after you sign in to Foundation, click the **New Source** button to show a page with similar functionality.

5. Click one of the available sources, and then click **Connect**.

6. Follow the on-screen directions to finish connecting to your source.

7. View the source files' ingestion and indexing job's progress. To do this, on the sidebar, click **Summary**.

8. Wait until the source's tile displays **Fully indexed**.

9. You can now start using Codex Desktop to work with the generated index. For example, you can ask Codex Desktop questions such as the following:

   ```text theme={null}
   What is a summary of the kinds of information that are available in the Unstructured Foundation index about my sources?
   ```

   ```text theme={null}
   What are some examples of the kinds of questions I can ask the Unstructured Foundation index about my sources?
   ```

## Next steps

* To learn more about how to use Unstructured Foundation, enter the following prompt in Codex Desktop:

  `$foundation:help`

* [Manage your Foundation sources](/foundation/sources): Add, change, and remove sources from Foundation.

* [Foundation storage](/foundation/storage): Understand what artifacts that Foundation generates, indexes, and stores about your sources.

* [Troubleshoot Foundation](/foundation/troubleshooting): Solutions for common issues.

## Questions? Need help?

* For general questions about Unstructured products and pricing, email Unstructured Sales at [sales@unstructured.io](mailto:sales@unstructured.io).
* For technical support, [request support](/support/request).