# Systematic Debugging

> Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes

- Skill: `paperclipai/systematic-debugging` (Agent Skill)
- Install (CLI): `npx skillmds@latest add paperclipai/systematic-debugging`
- Raw SKILL.md: https://api.skillmd.com/api/skills/paperclipai/systematic-debugging/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: paperclipai (https://skillmd.com/u/paperclipai)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/paperclipai/systematic-debugging

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4-phase root cause investigation — includes root-cause-tracing, defense-in-depth, and condition-based-waiting techniques. Find the cause before proposing a fix.