debugging-testing

debugging-testing is a skill for Claude Code, Codex from Tibsfox/gsd-skill-creator. It costs 48 tokens per session (3,757 once invoked), scanned A, original, no licence file.

A step-by-step method for investigating bugs that are hard to reproduce, including production-only failures and Heisenbugs. It uses observation, hypotheses, predictions, tests, and iteration.

In plain words
What is it for?
Use it to start debugging an unknown issue, design targeted tests, and investigate failures that disappear when you inspect them.
Why use it?
It replaces guesswork with a repeatable way to narrow down what causes an intermittent or environment-specific failure.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to start debugging an unknown issue, design targeted tests, and investigate failures that disappear when you inspect them.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tibsfox/gsd-skill-creator/debugging-testing
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 Tibsfox/gsd-skill-creator --skill debugging-testing
Clone the repo
git clone --depth 1 https://github.com/Tibsfox/gsd-skill-creator

Made for: Claude Code, Codex.

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 debugging-testing

README.md
[![agentmods](https://agentmods.dev/badge/skills/tibsfox/gsd-skill-creator/debugging-testing/github.svg)](https://agentmods.dev/skills/tibsfox/gsd-skill-creator/debugging-testing)
Your own site
<a href="https://agentmods.dev/skills/tibsfox/gsd-skill-creator/debugging-testing"><img src="https://agentmods.dev/badge/skills/tibsfox/gsd-skill-creator/debugging-testing/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 debugging-testing

Your own site · 80×15
<a href="https://agentmods.dev/skills/tibsfox/gsd-skill-creator/debugging-testing"><img src="https://agentmods.dev/badge/skills/tibsfox/gsd-skill-creator/debugging-testing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,757 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 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 $0.00048 $0.03757
Opus 5 $0.00024 $0.01878
Sonnet 5 $0.00010 $0.00751
Haiku 4.5 $0.00005 $0.00376

Measured 9d ago against content hash eee315e2aa28, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

debugging-testing 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 9d 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.

examples/skills/coding/debugging-testing/SKILL.md · 290 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

2 files 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.

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. 9d ago First seen · 290 lines · 48 tokens per session scan A eee315e2aa28

Subscribe to this mod's changes

debugging-testing is a skill published in the GitHub repository Tibsfox/gsd-skill-creator (69 stars, last pushed 1mo ago), with no licence file. It adds 48 tokens to every session and 3,757 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 2026-09-03.

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