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For ChatGPT Plus and Pro, where you add StackOne to your own account and connect it. On Pro, ChatGPT can read through StackOne but can’t make changes. In a Business, Enterprise or Edu workspace? Follow Organization User Setup instead.

Before you start

  • A StackOne project you are a member of.
  • A connector profile in the project for each provider the client should reach, with the actions you want exposed enabled.
  • (Optional) A linked account for each provider. Accounts can also be linked during the consent flow.

Add StackOne

1

Add the custom MCP server

Add the server in a browser. The desktop app picks it up from there once it exists.
  1. Go to ChatGPT Plugins.
  2. Select Add, then Add custom MCP server.
  3. Enter a name and description, for example StackOne.
  4. Under Connection, enter the MCP server URL:
  5. Set authentication to OAuth and leave Advanced OAuth settings as discovered. ChatGPT discovers the endpoints and registers itself, so there is no client ID or secret to enter. No mcp-remote wrapper needed. If ChatGPT asks you to confirm that the provider issues refresh tokens, confirm it.
  6. Review the risk warning and select I understand and want to continue.
  7. Select Create as a plugin.
  8. Select Connect StackOne to start the sign-in.
2

Sign in and authorize

  1. Sign in to StackOne. In a desktop app or code editor, this opens in your browser.
  2. If StackOne asks for a project, pick yours and click Continue to Accounts.
  3. Pick the work systems ChatGPT can use (your Linked Accounts).
  4. If you see Load tools when needed, leave it on.
  5. Click Authorize.
StackOne's Select accounts screen with two Linked Accounts ticked, Load tools when needed on, and the Authorize button
Back in ChatGPT, review the tools it discovered, then install the plugin.
3

Use it in a chat

Start a new chat, type @, select the StackOne plugin, and try:
The plugin works in the ChatGPT desktop app as well as the browser. It is not available on mobile.
ChatGPT reaches only the Linked Accounts you approved when you connected. To add one you link later, or one someone shares with you afterwards:
1

Open Connected Apps

In the StackOne dashboard, go to Connected Apps.
2

Edit the connection

  1. Open the ⋮ menu on the row for ChatGPT and select Edit tool access.
  2. Select the Linked Account.
  3. Click Save changes.
To review or revoke the connection, use the same ⋮ menu in Connected Apps.
ChatGPT works from a snapshot of the tools StackOne exposed when you added it. When you link another Linked Account or enable more actions on a Connector Profile, open the plugin at ChatGPT Plugins and select Refresh.With Advanced Tool Search on, no refresh is needed. It replaces the per-action tool list with two stable tools, Search and Execute.