five-whys

five-whys is a command for coding agents from puelpan/claude-plugins. It costs 0 tokens per session (611 once invoked), scanned A, original, no licence file.

A problem-solving command based on Five Whys, a method that repeatedly asks why a problem happened to trace it back to an underlying cause.

In plain words
What is it for?
Use it to analyse development problems, system failures, and other incidents where finding the root cause matters.
Why use it?
It helps move beyond the visible symptom and investigate why a software issue or system failure occurred.

Command

Part of the development plugin — 5 skills, 4 commands, 1 MCP server 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 commands/puelpan/claude-plugins/five-whys
Clone the repo
git clone --depth 1 https://github.com/puelpan/claude-plugins

Or install development, the plugin that ships this one along with the rest of its 5 skills, 4 commands, 1 MCP server.

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 five-whys

README.md
[![agentmods](https://agentmods.dev/badge/commands/puelpan/claude-plugins/five-whys.svg)](https://agentmods.dev/commands/puelpan/claude-plugins/five-whys)
Your own site
<a href="https://agentmods.dev/commands/puelpan/claude-plugins/five-whys"><img src="https://agentmods.dev/badge/commands/puelpan/claude-plugins/five-whys.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 611 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 $0.00000 $0.00611
Opus 5 $0.00000 $0.00305
Sonnet 5 $0.00000 $0.00122
Haiku 4.5 $0.00000 $0.00061

Measured 4d ago against content hash e6c83c3ceb61, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

five-whys 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 4d 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.

development/commands/five-whys.md · 75 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. 4d ago First seen · 75 lines · 0 tokens per session scan A e6c83c3ceb61

Subscribe to this mod's changes

five-whys is a command published in the GitHub repository puelpan/claude-plugins (3 stars, last pushed 9d ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 611 tokens. 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.