What is debug-helper?

A debugging guide for finding the causes of software errors. It covers collecting error details, tracing the root cause, proposing a fix, and writing a report, usually in Simplified Chinese.

Use it to investigate bugs, understand exceptions, analyze error logs, and prepare a debugging report.

It turns error messages and stack traces into a structured explanation instead of leaving the cause unclear.

How rootsli/claude-quickstart-cn configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to rootsli/claude-quickstart-cn. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/rootsli/claude-quickstart-cn/main/.claude/skills/debug-helper/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/rootsli/claude-quickstart-cn

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/rootsli/claude-quickstart-cn/debug-helper/github.svg)](https://agentmods.dev/skills/rootsli/claude-quickstart-cn/debug-helper)

Your own site

<a href="https://agentmods.dev/skills/rootsli/claude-quickstart-cn/debug-helper"><img src="https://agentmods.dev/badge/skills/rootsli/claude-quickstart-cn/debug-helper/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/rootsli/claude-quickstart-cn/debug-helper"><img src="https://agentmods.dev/badge/skills/rootsli/claude-quickstart-cn/debug-helper.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 976 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00022	$0.00976
Opus 5.5	$0.00009	$0.00390
Sonnet 5.5	$0.00004	$0.00195
Haiku 4.5	$0.00002	$0.00098

Measured 2mo ago against content hash 00eeef6963e5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

debug-helper scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/skills/debug-helper/SKILL.md · 172 lines

How it starts

The opening of the file, as written. The whole thing — 172 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Debug Helper

帮助调试代码，分析错误信息，定位问题根源，提供修复建议。

什么时候使用

当用户请求以下操作时使用此 skill：

调试代码
分析错误信息
修复 bug
理解异常原因
排查问题

操作说明

调试步骤

收集信息 - 获取错误信息、堆栈跟踪、相关代码
分析错误 - 理解错误类型和消息含义
定位根源 - 找到导致问题的代码位置
提供解决方案 - 给出具体的修复建议
预防建议 - 提供避免类似问题的建议

常见错误类型

错误类型	可能原因
TypeError	类型不匹配、空值操作
ReferenceError	未定义变量、作用域问题
SyntaxError	语法错误、缺少括号/引号
RuntimeError	运行时逻辑错误
NetworkError	网络请求失败、超时

分析框架

对于每个错误，需要分析：

What: 发生了什么错误
Where: 错误发生在哪里
Why: 为什么会发生
How: 如何修复

输出格式

使用 templates/debug-report.md 模板格式化输出。
优先使用简体中文输出。

## 调试分析报告

### 错误概述
[错误类型和简要描述]

### 根本原因
[详细分析]

### 修复方案
[具体代码修改]

### 预防建议
[如何避免类似问题]

示例

输入

错误信息：

TypeError: Cannot read properties of undefined (reading 'map')
    at UserList (UserList.jsx:15:23)
    at renderWithHooks (react-dom.development.js:14985:18)

输出

调试分析报告

错误概述

TypeError: Cannot read properties of undefined (reading 'map')

在 UserList 组件第 15 行调用 .map() 时，users 变量为 undefined。

根本原因

直接原因: 尝试在 undefined 上调用 .map() 方法
深层原因:
- 父组件可能没有传递 users prop
- 数据获取尚未完成时组件已渲染
- API 返回格式与预期不符

修复方案

方案 1: 添加默认值（推荐）

function UserList({ users = [] }) {
  return (
    <ul>
      {users.map(user => (
        <li key={user.id}>{user.name}</li>
      ))}
    </ul>
  );
}

方案 2: 条件渲染

function UserList({ users }) {
  if (!users || users.length === 0) {
    return <p>No users found</p>;
  }

  return (
    <ul>
      {users.map(user => (
        <li key={user.id}>{user.name}</li>
      ))}
    </ul>
  );
}

方案 3: 可选链操作符

function UserList({ users }) {
  return (
    <ul>
      {users?.map(user => (
        <li key={user.id}>{user.name}</li>
      ))}
    </ul>
  );
}

Read the full file on GitHub · 172 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

templates/debug-report.md 1023 B

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 172 lines · 22 tokens per session scan A 00eeef6963e5

Subscribe to this mod's changes

debug-helper is a skill published in the GitHub repository rootsli/claude-quickstart-cn (10 stars, last pushed 3mo ago), licensed CC0-1.0. It adds 22 tokens to every session and 976 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Debugging

debug-helper next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
debug-helperrootsli/claude-quickstart-cn	Skill	10	3mo ago	CC0-1.0	A	22	Claude Code
systematic-debuggingopen-metadata/OpenMetadata	Skill	16k	yesterday	Apache-2.0	A	37	Claude Code
log-error-digestzebbern/claude-code-guide	Skill	4.7k	3d ago	MIT	A	71	Claude Code, Codex
cwv-optimizeradobe/skills	Skill	319	yesterday	Apache-2.0	A	112	Claude Code
ci-fixersipyourdrink-ltd/bernstein	Skill	1.2k	yesterday	Apache-2.0	A	15	Claude Code, Codex
incident-response-incident-responsermyndharis/antigravity-skills	Skill	1.9k	23d ago	MIT	A	36	Claude Code
triaging-web-analytics-supportPostHog/posthog	Skill	41k	yesterday	none	A	151	Claude Code, Codex

claude-quickstart-cn: Skill for Claude Code