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codexqa-rootcause-analyzer

Diagnoses exception root causes from stack traces, logs, call-chain dumps, and debug output using the CodexQA CLI for structured repo analysis. Use when the user mentions codexqa-rootcause-analyzer, exception RCA, crash analysis, AI code diagnosis, stack diagnosis, 异常根因, 堆栈诊断, 崩溃分析, 异常诊断, or asks to turn an exception into a root-cause report. Not structure/impact analysis (that is codexqa-code-analyzer), not SAST + Agent LLM Detection code-risk scan reports (that is codexqa-defect-analyzer), and not CodexQA evidence-pack HTML review (that is codexqa-code-reviewer). Former skill name: root-cause-diagnosis.

skills/codexqa-rootcause-analyzer/SKILL.md

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Observed behavior
Network or broad shell
Last checked
Nov 5, 2026

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236
Repository last updated
Nov 6, 2026
License
Apache-2.0

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# Root Cause Diagnosis

Turns exception evidence into an **English** root-cause report. Structured understanding of the business codebase comes from the CodexQA CLI; this skill diagnoses **on top of** that analysis.

CLI: `node {baseDir}/scripts/diagnose.ts` (`$SKILL_SCRIPT`). Task data: `{baseDir}/data/{taskId}/`.

`README.md` / `README.zh-CN.md` / `HOW_IT_WORKS.md` / `KNOWN_LIMITATIONS.md` (and their `.zh-CN` twins) are human-facing. Do not load them at runtime.

## Boundaries

| Need | Skill |
|---|---|
| Symbol-graph change impact, callers, test gaps, entry risk | `codexqa-code-analyzer` |
| Exception RCA from stacks/logs on top of CLI analysis | **this skill** |