Building an AI agent from scratch with Jev handling decisions
A tutorial argues against routing every choice through a frontier model, letting Jev return typed decisions with confidence scores while the big model writes and your code makes the final call.
this is the guide i wish existed when i built my first agent. How to build an AI agent from scratch, with Jev doing the decision making. Most agent tutorials teach you to call a frontier model for everything. Every route. Every yes or no. Every "which tool next." That's why your first agent is slow and your API bill looks like a car payment. This one does it the other way. Big model writes. Jev decides. Your code makes the final call. Faster. Cheaper. And way easier to debug, because every decision comes back typed with a confidence score instead of a paragraph. If you've been waiting for the right moment to build your first agent, this is it. Save this. follow @cyrilXBT