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Naveen Raj

Building AI Agents from Scratch with Python

Tools and Real-World Robustness

An agent that can only talk isn't useful — the point is letting it do things: query a database, call an API, run code. This chapter adds tool calling to the loop from Chapter 2, then covers the failure modes that show up the moment an agent starts taking real actions.

Sections

  1. 1. The Tool-Calling Pattern
  2. 2. Implementing a Calculator Tool
  3. 3. Error Handling, Retries, and Guardrails
Building the Core Loop
Tools and Real-World Robustness — Building AI Agents from Scratch with Python — Naveen Raj