Connect Gemini CLI to Tandem

Gemini CLI connects over streamable HTTP and discovers Tandem's sign-in on its own.

Steps

1. Add Tandem to ~/.gemini/settings.json.
2. Start Gemini CLI and run /mcp auth tandem to sign in.

~/.gemini/settings.json

{
  "mcpServers": {
    "tandem": { "httpUrl": "https://api.tandemcrm.app/mcp" }
  }
}

How it signs in

Gemini CLI signs in with OAuth: it registers itself with Tandem, opens your browser, and you sign in, choose a workspace and approve what it may do (read, suggest, write, delete). It gets crm:read and crm:write unless you approve less. Disconnect it any time under Agents in Tandem.

Try it

Ask Gemini CLI: "Which Tandem workspace are you connected to, and what can you do there?" Then try "Add acme.com to Tandem with the details from its website."

See the tools reference for everything Gemini CLI can do, and permissions for what each scope allows.