Which API can you use to list, create, and modify Google Workspace users?

The Admin SDK Directory API is specifically designed to manage and interact with Google Workspace user accounts. This API allows administrators to perform a variety of operations related to users, such as listing existing users, creating new user accounts, and modifying user attributes like email addresses and profile information.

In addition to user management, the Directory API also provides functionality for managing groups, domains, and organizational units, making it a crucial tool for any organization using Google Workspace. This API is essential in scenarios where bulk operations are required, or when integrating user management capabilities into custom applications or workflows.

The other APIs listed focus on specific functionalities like email management (Gmail API), file storage (Google Drive API), and calendar events (Google Calendar API), and do not offer features related to user account management within the Google Workspace environment. Therefore, the Admin SDK Directory API is the correct choice for tasks related to listing, creating, and modifying users in Google Workspace.