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.
Connect StackOne
1
Add the server to Gemini
~/.gemini/settings.json under mcpServers by hand:2
Sign in and authorize
Run 
gemini. The CLI discovers that StackOne uses OAuth and opens your browser. If it does not, authenticate from inside the session:- Sign in to StackOne. In a desktop app or code editor, this opens in your browser.
- If StackOne asks for a project, pick yours and click Continue to Accounts.
- Pick the work systems Gemini CLI can use (your Linked Accounts).
- If you see Load tools when needed, leave it on.
- Click Authorize.

3
Check it works
Run
/mcp to list connected servers and their tools.Add or change accounts
Add or change accounts
Gemini CLI reaches only the Linked Accounts you approved when you connected. To add one you link later, or one someone shares with you afterwards:To review or revoke the connection, use the same ⋮ menu in Connected Apps.
1
Open Connected Apps
In the StackOne dashboard, go to Connected Apps.
2
Edit the connection
- Open the ⋮ menu on the row for Gemini CLI and select Edit tool access.
- Select the Linked Account.
- Click Save changes.