What Changes When the System Is an Agent

A feature that sends one request to a model and returns one answer is a single call. A feature in which a model chooses an action, calls a tool, reads the result, and repeats until the job is finished is an agent. The tools are ordinary functions that the agent is allowed to call, such as a search over technicians or a function that creates a booking.

The job ticket assistant is a single call: a request goes in and a ticket comes out. The home repair app also has a scheduling agent, which takes a finished ticket and books a technician for it