The text discusses additional capabilities for voicebots on the Vapi platform, which goes beyond just creating voicebots via a dashboard and API. The platform enables three predefined functions: transferCall, endCall, and dialKeypad, as well as custom functions that can be defined by developers to provide more functionality to their voice assistants. These functions allow for various scenarios such as transferring calls, ending calls due to inappropriate behavior, entering digits on a keypad, and defining custom actions based on user input. Developers can also specify a server URL for function calls, which can be configured at the account or assistant level, allowing for different URLs to be used depending on the context. This enables a dynamic and interactive user experience where the frontend can react to changes in the conversation in real time.