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

# Connect ChatGPT

> Add Billpal to ChatGPT as a custom MCP server.

You add Billpal to ChatGPT as a custom MCP server and sign in to Billpal once. After that you can ask ChatGPT about your documents in any chat.

**You need:** a Billpal account with setup finished, your authenticator app for signing in, and ChatGPT in a browser.

ChatGPT shows its menus in the language set in ChatGPT. The labels below match the English interface.

<Steps>
  <Step title="Copy the server URL in Billpal">
    In Billpal, open **Settings > AI agents** and click **Connect** on ChatGPT. In the "Add Billpal to ChatGPT" window, click **Copy URL**, then **Open ChatGPT**.
  </Step>

  <Step title="Add a custom MCP server">
    In ChatGPT, click **Add plugin** and choose **Custom MCP server**.
  </Step>

  <Step title="Enter Billpal">
    Enter `Billpal` as the name and paste the server URL `https://billpal.io/mcp`. Choose **OAuth** for authentication. ChatGPT warns that custom servers can be a risk. Confirm the warning.
  </Step>

  <Step title="Create as a plugin">
    Click **Create as a plugin**. ChatGPT opens the Billpal sign-in. Sign in and enter the code from your authenticator app.
  </Step>

  <Step title="Allow access">
    Billpal shows "Connect ChatGPT to Billpal". Check under **Signed in as** that the right account is signed in, then click **Allow**. If it's the wrong account, click **Sign out** and sign in with the right one.
  </Step>

  <Step title="Use it in a chat">
    Install the plugin if ChatGPT asks. Type `@` in a chat and pick Billpal, or ask your question directly.
  </Step>
</Steps>

In Billpal, ChatGPT now shows as **Connected** under **Settings > AI agents**.

## When ChatGPT asks you to sign in again

After a password change in Billpal, or after you disconnect, ChatGPT asks you to reconnect. Click it and sign in to Billpal again.

## Read next

<Columns cols={2}>
  <Card title="What ChatGPT and Claude can read" icon="magnifying-glass" href="/en/ai-agents-data">
    What the agent can fetch, with example questions.
  </Card>

  <Card title="Connection problems" icon="circle-exclamation" href="/en/ai-agents-troubleshooting">
    Error messages and what to do.
  </Card>
</Columns>


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