Example: Adding a Calculator to Our Agent › Key Takeaways

Let's review what we've accomplished:

We built a complete tool integration. Starting from a simple Python function, we created a calculator tool that the agent can use to perform exact calculations.

We saw the full workflow in action. The agent receives a question, decides whether to use a tool, calls the tool with the right parameters, and incorporates the result into its response.

We handled errors gracefully. When calculations fail, the agent provides helpful error messages instead of crashing.

We learned the pattern for adding any tool. The same approach works for calculators, weather APIs, databases, or any other external capability you want to give your agent.

The pattern is always:

1. Create a Python function that does something useful
2. Write a clear tool description
3. Add it to the tool registry
4. Let the agent decide when to use it