# Investigate

> Structured root-cause investigation template. Encodes the rule "no patches until you can reproduce, predict, and explain the bug." Forces hypothesis-test pairs, evidence collection, and a prevention plan. Use when the user reports a bug or asks to fix something they don't fully understand yet. Run as `node ~/.claude/skills/dragoon/skills/investigate/scripts/investigate.js "<symptom>"`.

- Skill: `dragoon0x/investigate` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add dragoon0x/investigate`
- Raw SKILL.md: https://api.skillmd.com/api/skills/dragoon0x/investigate/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: dragoon0x (https://skillmd.com/u/dragoon0x)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/dragoon0x/investigate

---


# /investigate

The discipline tool: no patches without root-cause clarity.

## When to use

- Bug report
- Anything intermittent
- The user says "fix this" but the underlying cause isn't clear

## Forces

- exact reproduction steps
- multiple hypotheses with how-to-test for each
- raw evidence (logs, traces) before reasoning
- a prevention plan beyond just the fix

## Run it

```
dragoon investigate "form submit hangs after upload"
dragoon investigate "..." --apply
```