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

# ChatGPT

> Add Trillion to ChatGPT in your web browser with Developer mode.

For ChatGPT in a web browser at chatgpt.com, on the Plus, Pro, Business, Enterprise and Education plans. Set it up in the browser; the phone app cannot add it.

<Steps>
  <Step title="Turn on Developer mode">
    Sign in at chatgpt.com. Click your name at the bottom left, then **Settings**, then **Security and login**. Switch on **Developer mode**.

    **When it worked:** the switch is on. ChatGPT may draw an orange border round the window while Developer mode is on; that is normal.

    **If not:** no Developer mode switch? On a Business or Enterprise workspace an admin must allow it first, in **Workspace settings**, **Permissions & roles**. On the Free plan it is not offered.
  </Step>

  <Step title="Open Plugins and click +">
    Go to ChatGPT's Plugins page and click the **+** button. A window called **New Plugin** opens.

    [Open ChatGPT Plugins](https://chatgpt.com/plugins)

    **If not:** if there is no **+** button, Developer mode is still off: do step 1 again and reload the page.
  </Step>

  <Step title="Type the name and paste the address">
    In **Name** type `Trillion`. Under **Connection**, keep **Server URL** selected and paste the address below in the box under it.

    ```text theme={null}
    https://app.gettrillion.ai/mcp
    ```

    **Leave as it is:** Icon and Description (both optional).
  </Step>

  <Step title="Keep OAuth, tick the box, click Create">
    Tick **I understand and want to continue**, then click **Create**.

    **Leave as it is:** Authentication: OAuth. Advanced OAuth settings: do not open it; ChatGPT finds Trillion's settings itself.

    **If not:** if **Create** stays grey, the address box is empty or the box is not ticked.
  </Step>

  <Step title="Tap your passkey">
    A Trillion page opens: tap your passkey (Touch ID or Face ID) and allow ChatGPT. The page closes by itself.

    **When it worked:** Trillion is in your plugins, with its list of tools.

    **If not:** if you have no Trillion account yet, choose **Create your Trillion account** under **New here?** on that page.
  </Step>

  <Step title="Use it in a chat">
    Start a new chat. Click the **+** by the message box, choose **Developer mode** and pick **Trillion**. Then ask for what you want, for example:

    ```text theme={null}
    Use Trillion to help me decide whether to launch this week or next.
    ```

    **If not:** when ChatGPT asks before a Trillion tool that changes something, choose to remember your answer: it stops asking for the rest of that chat. ChatGPT does not offer a setting that keeps it for every chat.
  </Step>
</Steps>


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