Secure APIs & AI Cost

In this lesson you will learn how to secure API routes and manage AI costs in a production environment.

Like a doorman who checks who you are — the API guard ensures only authorised users get access and you don't overpay for AI.

Rate limiting: Restricting how many requests a user can send within a given time window.
Edge Function: A function that runs close to the user on a CDN — fast and secure.
Cost per token: The monetary cost per unit of text the LLM processes.