account-setup

Multi-account Google OAuth management uses a native OAuth2 flow with locally stored refresh tokens to connect calendar and Gmail. You register new accounts and verify the connection using dedicated account management commands during startup.

You manage Gmail and calendar sync across multiple Google accounts using account_register, account_sync, account_list, and account_remove commands. These tools operate across Claude Code, Cowork, and Claude Desktop to maintain active connections.

Google calendar sync fails with authentication errors when OAuth tokens expire or become invalid. You can resolve this by reauthorizing tokens through the account_sync command to refresh the connection and restore access to your Google account data.

Yes, configuring a Google Cloud project with proper OAuth credentials is a prerequisite for using local refresh tokens. The setup requires creating valid OAuth2 credentials to enable the native authentication flow for your desktop application.

Yes, multi-account Google OAuth integration works across Claude Code, Cowork, and Claude Desktop. The account management commands function uniformly across these applications to register, sync, list, and remove connected Google accounts.

The best way to remove a disconnected Google account from OAuth integration is using the account_remove command. This ensures the locally stored refresh tokens and associated calendar and Gmail sync configurations are properly cleared.