Anthropic - Claude Certified Developer - Foundations Study Guide

4: Eval, Testing, and Debugging

This chapter turns the operating surfaces from the previous chapters into a disciplined debugging practice for Claude applications. It covers how to identify error types, isolate whether a problem lives in your integration layer or in the model's output, read traces to find failure modes, select a recovery strategy that matches the error, and build evals that catch regressions before users do.