thkt/analyzing-root-causes
skills/analyzing-root-causes/SKILL.md
Root cause analysis with 5 Whys. Use when: root cause, 5 Whys, なぜなぜ分析, 根本原因, 原因分析, symptom fix, 対症療法.
$ install --global
skillsauthnpx skillsauth add thkt/dotclaude analyzing-root-causesInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 20, 2026, 9:27 AM10.9s3 files scanned
SKILL.md
- name:
- analyzing-root-causes
- description:
- >
- Root cause analysis with 5 Whys. Use when:
- root cause, 5 Whys, なぜなぜ分析,
- allowed-tools:
- [Read, Grep, Glob, Task]
- context:
- fork
- user-invocable:
- false
Root Cause Analysis - 5 Whys
Symptom vs Root Cause
| Type | Example | Result | | ----------- | -------------------------- | ------------- | | Symptom Fix | setTimeout to wait for DOM | Breaks later | | Root Cause | Use React ref properly | Permanent fix | | Symptom Fix | Add flag for double-submit | Complexity ↑ | | Root Cause | Disable button on submit | Simple fix |
5 Whys Process
| Step | Question | Reveals | | ---- | ----------------------------- | ------------------------ | | 1 | Why does this occur? | Observable fact | | 2 | Why does that happen? | Implementation detail | | 3 | Why is that the case? | Design decision | | 4 | Why does that exist? | Architectural constraint | | 5 | Why was it designed this way? | Root cause |
References
| Topic | File |
| -------- | ---------------------------------------------------- |
| 5 Whys | ${CLAUDE_SKILL_DIR}/references/five-whys.md |
| Patterns | ${CLAUDE_SKILL_DIR}/references/symptom-patterns.md |
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