systematic-debugging

systematic-debugging is a skill for Claude Code from jh941213/my-cc-harness. It costs 39 tokens per session (778 once invoked), scanned A, original, no licence file.

A debugging workflow that investigates the root cause of a bug, failed test, or unexpected behavior before suggesting a fix.

In plain words
What is it for?
Use it when a bug, test failure, or unexpected result needs investigation before code changes are proposed.
Why use it?
It reduces the risk of treating only the visible symptom and leaving the underlying problem in place. It makes the reason for a proposed fix easier to understand.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the my-cc-harness plugin — 43 skills, 4 commands, 12 agents, 10 hooks shipped together

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.

agentmods
npx agentmods add skills/jh941213/my-cc-harness/systematic-debugging
Any agent
npx skills add jh941213/my-cc-harness --skill systematic-debugging
Clone the repo
git clone --depth 1 https://github.com/jh941213/my-cc-harness

Made for: Claude Code.

Or install my-cc-harness, the plugin that ships this one along with the rest of its 43 skills, 4 commands, 12 agents, 10 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 systematic-debugging

README.md
[![agentmods](https://agentmods.dev/badge/skills/jh941213/my-cc-harness/systematic-debugging.svg)](https://agentmods.dev/skills/jh941213/my-cc-harness/systematic-debugging)
Your own site
<a href="https://agentmods.dev/skills/jh941213/my-cc-harness/systematic-debugging"><img src="https://agentmods.dev/badge/skills/jh941213/my-cc-harness/systematic-debugging.svg" alt="Measured on agentmods" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 778 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00039 $0.00778
Opus 5 $0.00019 $0.00389
Sonnet 5 $0.00008 $0.00156
Haiku 4.5 $0.00004 $0.00078

Measured 6d ago against content hash 567e1cdbc747, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

systematic-debugging 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 6d 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.

skills/systematic-debugging/SKILL.md · 47 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 6d ago First seen · 47 lines · 39 tokens per session scan A 567e1cdbc747

Subscribe to this mod's changes

systematic-debugging is a skill published in the GitHub repository jh941213/my-cc-harness (125 stars, last pushed 1mo ago), with no licence file. It adds 39 tokens to every session and 778 once invoked, about $0.0002 per session on Opus 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 2026-08-30.

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