No. Calendars are part of DayBook because they shape your day, but DayBook is not limited to a calendar or one built-in assistant. It is a shared working interface connecting you, the agents you choose and the tools involved in your day.

DayBook is designed to work with compatible agents from different platforms. You can connect an agent that already understands how you work, decide which parts of DayBook it may access and give different agents different responsibilities.

You could ask an agent to triage coordination email, compare requests with your calendar, prepare replies and bring back only the decisions that need you. You could also ask it to arrange tasks around fixed appointments, update reminders or coordinate changes across your day. Instead of moving between email, calendars, task lists and agent chats, you can follow the work from one clear interface.

Yes, when that channel has been configured. DayBook is the shared place where work is understood and recorded, not necessarily the only place where conversation happens. The same agent may communicate with you through a supported channel while using DayBook to work from the context you have permitted.

That depends on the authority you give that agent. Each agent has a working agreement defining its role, access, boundaries and when approval is required. Routine work may proceed within those boundaries, while consequential or out-of-scope actions return to you. DayBook keeps those states visible and enforces the access available to the agent.

You set up and control connections inside DayBook, so you do not need to paste passwords, private calendar links or other credentials into an agent conversation. Each agent receives only the DayBook access required for its role—not your raw credentials. You can change or revoke that access centrally, and DayBook keeps approvals and relevant activity visible to you.