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← AI Coding Agents (Claude Code & Codex) learning path
AI Coding Agents (Claude Code & Codex) · Module 6 of 10

Debugging with agents

Agents speed up finding and fixing bugs when you give evidence.

📖 Key ideas

  1. Share the error message, stack trace and steps to reproduce.
  2. Ask the agent to find the root cause before changing code.
  3. Have it write a failing test that shows the bug.
  4. Then fix the code until the test passes.
  5. Ask "why did this happen" so you learn, not just patch.
💡 Real-life example: Like a doctor: describe the symptoms clearly, get a diagnosis first, then the medicine.
Stack traceList of function calls at the error
Root causeThe real reason a bug happens
ReproduceMake the bug happen on purpose
Regression testTest that stops a bug returning