2.0 Introduction: a tool is the model's user interface

Part of the Claude from Zero to Mastery (Claude Certified Architect prep) course

Before this: Lesson 0.5 and Lesson 0.7. Lesson 1.1 helps too, but you don't need it.

When an agent calls the wrong tool, everyone's first guess is that the model isn't good enough. Usually the model isn't to blame: the tool was badly designed. This domain is about designing tools the model picks correctly, and that show it the next step when they break. ...