AI Application Basics

You might say

Add an AI assistant to my website that people can chat with.

A product that uses an AI model, an interface, and sometimes tools to help people complete tasksWhen you ask a calendar assistant about tomorrow afternoon, the interface receives the question, the model decides what to look up, a calendar tool reads the real schedule, and the app shows the result. The model does not enter the calendar on its own.

Know first

API JSON

Turn “check my calendar” into a result you can verify

User request Can you check whether I’m free tomorrow afternoon?

What the model, app, and tool each do

The app describes the tool：It supplies the calendar tool’s allowed parameters, permissions, and the current question.

The model requests an action：It returns a structured request to call the right tool; that is not a calendar result yet.

The app returns a real result：It validates the request, queries the calendar, and gives the result back for a response.

Learn next

1Token→2Context Window→3Tool Calling→4Multimodal AI→