Example: Adding a Calculator to Our Agent › Example: Adding a Calculator to Our Agent

You've learned why agents need tools and how to design tool interfaces. Now let's build something real. We'll add a calculator tool to our personal assistant, transforming it from an agent that guesses at math problems into one that computes exact answers.

This is a complete, working example you can run and modify. We'll start with the simplest possible calculator, then gradually enhance it to handle more complex scenarios. By the end, you'll have a template you can adapt for any tool you want to add to your agent.