The Agent Debugging Problem: Why Printf Doesn't Work When Your Code Thinks
Your agent returned a 200 status code. The response was fluent, grammatically perfect, and completely wrong. Welcome to the agent debugging problem — where the system never crashes, never throws an exception, and fails in ways that look indistinguishable from success.
Traditional debugging assumes that bugs manifest as errors. A stack trace points you to the line. A failing assertion tells you what went wrong. But agents don't crash when they make bad decisions. They confidently execute the wrong plan, call the wrong tool with plausible-looking parameters, and deliver a polished answer built on a hallucinated foundation. The bug isn't in your code — it's in your agent's reasoning, and your debugger has no idea what reasoning even looks like.
