Structured Debug

Skill

A reproduce, isolate, diagnose, fix loop for when something broke after a deploy and the cause isn't obvious.

by anthropics Listed Jan 23, 2026

Clone or download it from github.com, then drop the folder into ~/.claude/skills/ (Claude Code) or your agent's skills directory.

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From Anthropic's knowledge-work plugins (engineering plugin).

Starts from an error message, stack trace or a vague "works in staging, not prod"
Keeps the agent disciplined: reproduce first, then narrow down, then fix
Handy when vibe-coded changes go sideways and guessing isn't working

Used it? Write the first review.