Prompt Library / Bug Fixer / Debugger / for Claude

Bug Fixer / Debugger Prompt for Claude

This is the Claude version of the bug fixer / debugger prompt: a disciplined diagnosis: cause first, then the smallest correct fix. It is formatted the way Claude takes prompts best. Free — copy it, replace the bracketed parts, and paste it in.

The prompt

✎ Editable — click in, customize or extend this prompt, then copy. Your edits copy with it.Take this prompt into the Generator and customize it to your own specification →

Using this prompt with Claude

Claude follows structured prompts most reliably when the parts are wrapped in XML tags, which is why this version is formatted that way. Its long context window means you can paste large source text inside the tags without trimming.

Replace the bracketed placeholders — [PASTE CODE], [ERROR MESSAGE OR SYMPTOM], [WHAT YOU EXPECTED] — with your own details before pasting.

Other versions and customization

See all model versions of this prompt, or open the prompt gateway to build a custom prompt from your own one-line goal, formatted for Claude or any other model.

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Mpromp2 — the AI Prompt Generator. Every prompt in this library is free to use, including commercially.