investigate

investigate is a skill for Claude Code, Codex from Dragoon0x/dragoon-skills. It costs 87 tokens per session (210 once invoked), scanned A, original, MIT.

A structured process for finding the root cause of a software bug before changing code.

In plain words
What is it for?
Use it to reproduce a problem, record evidence, compare testable hypotheses, explain the cause, and create a prevention plan.
Why use it?
It reduces the risk of applying a patch that only hides the symptom or causes another failure.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths.

Good fit Use it to reproduce a problem, record evidence, compare testable hypotheses, explain the cause, and create a prevention plan.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dragoon0x/dragoon-skills/investigate
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 Dragoon0x/dragoon-skills --skill investigate
Clone the repo
git clone --depth 1 https://github.com/Dragoon0x/dragoon-skills

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 investigate

README.md
[![agentmods](https://agentmods.dev/badge/skills/dragoon0x/dragoon-skills/investigate/github.svg)](https://agentmods.dev/skills/dragoon0x/dragoon-skills/investigate)
Your own site
<a href="https://agentmods.dev/skills/dragoon0x/dragoon-skills/investigate"><img src="https://agentmods.dev/badge/skills/dragoon0x/dragoon-skills/investigate/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 investigate

Your own site · 80×15
<a href="https://agentmods.dev/skills/dragoon0x/dragoon-skills/investigate"><img src="https://agentmods.dev/badge/skills/dragoon0x/dragoon-skills/investigate.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 87 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 210 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 $0.00087 $0.00210
Opus 5 $0.00044 $0.00105
Sonnet 5 $0.00017 $0.00042
Haiku 4.5 $0.00009 $0.00021

Measured 11d ago against content hash f83f74197961, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

investigate 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 11d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/investigate.js), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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/investigate/SKILL.md · 30 lines

What it actually says

/investigate

The discipline tool: no patches without root-cause clarity.

When to use

  • Bug report
  • Anything intermittent
  • The user says "fix this" but the underlying cause isn't clear

Forces

  • exact reproduction steps
  • multiple hypotheses with how-to-test for each
  • raw evidence (logs, traces) before reasoning
  • a prevention plan beyond just the fix

Run it

dragoon investigate "form submit hangs after upload"
dragoon investigate "..." --apply
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.

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. 11d ago First seen · 30 lines · 87 tokens per session scan A f83f74197961

Subscribe to this mod's changes

investigate is a skill published in the GitHub repository Dragoon0x/dragoon-skills (4 stars, last pushed 4mo ago), licensed MIT. It adds 87 tokens to every session and 210 once invoked, about $0.0004 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 2026-08-31.

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