CodingClaude

How to Write a Great AI Prompt to Debug Code

Most people ask AI to "Fix my code"—and wonder why the output is mediocre. Here's how to write a prompt that actually gets you what you want on the first try.

Before

"Fix my code"

Too vague—AI has to guess what you want

After

"You are a senior software engineer. Review the following TypeScript function and: (1) identify the bug causing the issue described, (2) explain why it happens in plain English, (3) provide a corrected version with inline comments. Do not rewrite the whole function unless necessary."

Specific, clear, ready to use

What makes the strong prompt better?

Persona framing anchors the quality level of the response

Three-part output structure prevents vague or incomplete answers

Constraint to not rewrite unnecessarily avoids scope creep

Pro tips for debug code prompts

  • Always specify your target audience or reader
  • Include concrete examples or context from your situation
  • Set tone guidance—formal, casual, witty, empathetic
  • Add length constraints to avoid rambling output
  • Exclude what you don't want (e.g., "no buzzwords", "no clichés")

Related prompt templates

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