debug

debug is a skill for Claude Code from This-HW/claude-code-kit. It costs 24 tokens per session (912 once invoked), scanned A, original, MIT.

A debugging workflow for investigating an error, traceback, or failing log. It moves through reproducing the problem, isolating its cause, applying a fix, and verifying the result.

In plain words
What is it for?
Diagnosing syntax, type, runtime, build, and external-service errors; locating their source; assessing their impact; and applying and checking fixes.
Why use it?
It turns an unclear failure into a sequence of checks, making it easier to identify the root cause and confirm that the fix works.

Skill for Claude Code

Written for Claude Code: effort in frontmatter. Also seen: model in frontmatter.

Part of the claude-code-kit plugin — 20 skills, 4 hooks shipped together

Good fit Diagnosing syntax, type, runtime, build, and external-service errors; locating their source; assessing their impact; and applying and checking fixes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/this-hw/claude-code-kit/debug
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add This-HW/claude-code-kit --skill debug
Clone the repo
git clone --depth 1 https://github.com/This-HW/claude-code-kit

Made for: Claude Code.

Or install claude-code-kit, the plugin that ships this one along with the rest of its 20 skills, 4 hooks.

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.

agentmods badge for debug

README.md
[![agentmods](https://agentmods.dev/badge/skills/this-hw/claude-code-kit/debug/github.svg)](https://agentmods.dev/skills/this-hw/claude-code-kit/debug)
Your own site
<a href="https://agentmods.dev/skills/this-hw/claude-code-kit/debug"><img src="https://agentmods.dev/badge/skills/this-hw/claude-code-kit/debug/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.

agentmods 80×15 button for debug

Your own site · 80×15
<a href="https://agentmods.dev/skills/this-hw/claude-code-kit/debug"><img src="https://agentmods.dev/badge/skills/this-hw/claude-code-kit/debug.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 912 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00024 $0.00912
Opus 5.5 $0.00010 $0.00365
Sonnet 5.5 $0.00005 $0.00182
Haiku 4.5 $0.00002 $0.00091

Measured 1mo ago against content hash 34fbb7f9c294, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

debug 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 1mo 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.

plugins/common/skills/debug/SKILL.md · 130 lines

How it starts

The opening of the file, as written. The whole thing — 130 lines — stays where its author put it; the contents beside it link to each section on GitHub.

디버깅 실행

4-Phase Debugging (Superpowers 패턴) Reproduce → Isolate → Fix → Verify

즉시 실행하세요. 설명하지 말고 바로 실행합니다.

에러 정보: $ARGUMENTS


파이프라인 구조

┌──────────────┐   ┌──────────────┐   ┌──────────────┐   ┌──────────────┐
│ Phase 1      │ → │ Phase 2      │ → │ Phase 3      │ → │ Phase 4      │
│ Reproduce    │   │ Isolate      │   │ Fix          │   │ Verify       │
│ (재현)       │   │ (격리)       │   │ (수정)       │   │ (검증)       │
└──────────────┘   └──────────────┘   └──────────────┘   └──────────────┘
      │                    │                  │                  │
      └──── diagnose ──────┘        fix-bugs ─┘      verify-code ┘
           (opus)                   (sonnet)          (haiku)

Phase 1-2: 재현 및 격리 (Reproduce + Isolate)

Task tool 사용:
subagent_type: diagnose
model: opus
prompt: |
  다음 에러를 진단해주세요:
  $ARGUMENTS

  ### Phase 1: Reproduce (재현)
  - 에러를 재현하는 최소 단계 식별
  - 재현 조건 및 환경 확인
  - 에러 발생 빈도 (항상/간헐적)

  ### Phase 2: Isolate (격리)
  - 에러 유형 (문법/타입/런타임/빌드/외부API)
  - 파일 위치 및 라인 번호
  - 스택 트레이스 분석
  - 루트 원인 파악
  - 영향 범위 (단일 함수/모듈/시스템 전체)

  ### 수정 방안 제안
  - 옵션 A: [빠른 수정]
  - 옵션 B: [근본 해결]

Phase 3: 수정 (Fix)

Task tool 사용:
subagent_type: fix-bugs
model: sonnet
prompt: |
  [diagnose 결과 포함]

  진단 결과를 바탕으로 버그를 수정해주세요.

  수정 원칙:
  - 최소 변경 원칙
  - exc_info=True 포함 (Python 로깅)
  - 에러 핸들링 추가 (필요시)
  - 같은 패턴의 버그가 다른 곳에 없는지 확인

Phase 4: 검증 (Verify)

Task tool 사용:
subagent_type: verify-code
model: haiku
prompt: |
  수정된 코드를 검증해주세요:
  [변경된 파일 목록]

  검증 항목:
  1. 에러 재현 → 해결 확인
  2. 빌드/컴파일 성공
  3. 타입 체크 통과
  4. 관련 테스트 통과
  5. 엣지 케이스 확인

출력 형식

Phase 1-2: 재현 및 격리

항목 내용
유형 [타입/런타임/빌드/외부API]
위치 [파일:라인]
재현 조건 [최소 재현 단계]
루트 원인 [원인 설명]
영향 범위 [함수/모듈/시스템]

Phase 3: 수정

[변경사항 diff 또는 설명]

Phase 4: 검증

[테스트/빌드 통과 여부]

예방 권장

[재발 방지를 위한 제안]

Read the full file on GitHub · 130 lines

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.

  1. 1mo ago First seen · 130 lines · 24 tokens per session scan A 34fbb7f9c294

Subscribe to this mod's changes

debug is a skill published in the GitHub repository This-HW/claude-code-kit (4 stars, last pushed 1mo ago), licensed MIT. It adds 24 tokens to every session and 912 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.

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