codexkit-bug-hunt

codexkit-bug-hunt is a skill for Codex from hoavdc/CodexKit. It costs 27 tokens per session (421 once invoked), scanned A, original, MIT.

A structured debugging guide for finding software defects: reproduce the problem, narrow down its cause, make a small fix, and verify the result.

In plain words
What is it for?
Use it to investigate bug reports, document reproduction steps and likely causes, apply a focused patch, and record verification results.
Why use it?
It replaces guesswork with evidence from the reported behavior, logs, tests, or metrics, and checks that the fix does not cause nearby problems.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it to investigate bug reports, document reproduction steps and likely causes, apply a focused patch, and record verification results.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hoavdc/codexkit/codexkit-bug-hunt
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 hoavdc/CodexKit --skill codexkit-bug-hunt
Clone the repo
git clone --depth 1 https://github.com/hoavdc/CodexKit

Made for: 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 codexkit-bug-hunt

README.md
[![agentmods](https://agentmods.dev/badge/skills/hoavdc/codexkit/codexkit-bug-hunt/github.svg)](https://agentmods.dev/skills/hoavdc/codexkit/codexkit-bug-hunt)
Your own site
<a href="https://agentmods.dev/skills/hoavdc/codexkit/codexkit-bug-hunt"><img src="https://agentmods.dev/badge/skills/hoavdc/codexkit/codexkit-bug-hunt/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 codexkit-bug-hunt

Your own site · 80×15
<a href="https://agentmods.dev/skills/hoavdc/codexkit/codexkit-bug-hunt"><img src="https://agentmods.dev/badge/skills/hoavdc/codexkit/codexkit-bug-hunt.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 421 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 $0.00027 $0.00421
Opus 5.5 $0.00011 $0.00168
Sonnet 5.5 $0.00005 $0.00084
Haiku 4.5 $0.00003 $0.00042

Measured 1mo ago against content hash 8bdbcc3de695, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

codexkit-bug-hunt 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.

skills/codexkit-bug-hunt/SKILL.md · 58 lines

What it actually says

Bug Hunt

Use this skill when a report says something is broken and you need disciplined debugging rather than guesswork.

Workflow

  1. Capture exact observed behavior and expected behavior.
  2. Reproduce with the cheapest reliable path.
  3. Narrow the failure boundary before editing code.
  4. Patch the smallest credible cause.
  5. Verify the original failure and nearby regressions.

Required outputs

  • reproduction path
  • root-cause hypothesis
  • patch summary
  • verification notes

Avoid

  • fixing symptoms without a reproduction
  • stacking unrelated cleanup into the bug fix
  • claiming a root cause without evidence

Quality Criteria

  • Every finding is tied to a specific evidence source (log, test, metric)
  • Pass/fail criteria are binary and measurable — no subjective judgments
  • Severity levels are assigned with clear thresholds
  • Remediation steps are provided for all critical and high findings

Verification (4C)

Check Question
Correctness Are all pass/fail criteria applied against the correct standard or rule?
Completeness Were all required dimensions or checklist items evaluated?
Context-fit Does the verification scope match the actual risk level of the deliverable?
Consequence If this passed verification but had a hidden flaw, what is the worst-case impact?

Edge Cases

  • Incomplete data for full assessment — Document which checks were limited and flag for re-verification when data becomes available.
  • Ambiguous pass/fail criteria — Request clarification from the standard owner before scoring. Mark as 'Needs Review'.
  • Multiple overlapping standards — Identify the governing standard and note where others diverge.

Changelog

  • v1.0.0 — Initial release
Files

What ships with it

4 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. 1mo ago First seen · 58 lines · 27 tokens per session scan A 8bdbcc3de695

Subscribe to this mod's changes

codexkit-bug-hunt is a skill published in the GitHub repository hoavdc/CodexKit (25 stars, last pushed 5d ago), licensed MIT. It adds 27 tokens to every session and 421 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 2026-08-30.

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