fishbone-diagram

fishbone-diagram is a skill for Claude Code, Codex from fzfclee/consulting-skills. It costs 53 tokens per session (753 once invoked), scanned A, original, Apache-2.0.

A structured way to investigate a problem by grouping possible causes into areas such as people, process, systems, policy, environment, and measurement.

In plain words
What is it for?
Use it to explore symptoms, prioritize causes for evidence testing, record missing information and assumptions, and plan validation actions.
Why use it?
It prevents teams from assuming one cause when several operational or human factors may be contributing.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to explore symptoms, prioritize causes for evidence testing, record missing information and assumptions, and plan validation actions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/fzfclee/consulting-skills/fishbone-diagram
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 fzfclee/consulting-skills --skill fishbone-diagram
Clone the repo
git clone --depth 1 https://github.com/fzfclee/consulting-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 fishbone-diagram

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/fzfclee/consulting-skills/fishbone-diagram"><img src="https://agentmods.dev/badge/skills/fzfclee/consulting-skills/fishbone-diagram.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 753 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 $0.00053 $0.00753
Opus 5 $0.00026 $0.00377
Sonnet 5 $0.00011 $0.00151
Haiku 4.5 $0.00005 $0.00075

Measured 11d ago against content hash f006b492121f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

fishbone-diagram 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.

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/fishbone-diagram/SKILL.md · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Fishbone Diagram

Use this skill to run Fishbone Diagram as a practical consulting method, not as a generic framework explanation.

Method Notes

  • Use categories such as people, process, systems, policy, environment, and measurement.
  • Prioritize cause branches for evidence testing.

Required Inputs

Collect or infer these inputs before execution:

  • problem statement
  • observed symptoms
  • process context
  • candidate cause categories

If an input is missing, do not block automatically. Mark it as missing, state the assumption used, and add a validation action.

When Not To Use

Do not use for a single verified linear cause or treat category branches as proven causes. Fishbone analysis is for exploring multiple cause families that still require evidence.

Adjacent Methods

  • five-whys-root-cause: follow one selected branch deeper.
  • systems-thinking: use for feedback and behavior over time.
  • constraint-analysis: use for a proven binding bottleneck.

Step-by-Step Execution

Step Required input How to execute Output
Define effect Problem statement, defect, service failure, or outcome gap. Place the problem at the head of the fishbone. Effect statement.
Choose categories Domain context. Select people, process, systems, policy, environment, measurement, or custom categories. Cause categories.
Populate causes Evidence, team input, process facts. List possible causes under each category. Fishbone cause map.
Mark evidence Cause map and available data. Label causes as evidenced, assumed, contradicted, or unknown. Evidence-coded fishbone.
Prioritize tests Evidence-coded fishbone. Choose top cause branches and validation tests. Root-cause test plan.

Output Template

### 1. Effect And Boundary
Observed effect:
Location / period:
Baseline:
In scope / out of scope:

### 2. Cause Map
| Category | Possible cause | Evidence status | Mechanism |
|---|---|---|---|
|  |  |  |  |

### 3. Priority Causes
| Cause | Impact if true | Testability | Confidence |
|---|---|---|---|
|  |  |  |  |

### 4. Test Plan
| Test | Owner | Timing | Confirming / disconfirming signal |
|---|---|---|---|
|  |  |  |  |

### Evidence And Next Decision
- Confirmed facts:
- Assumptions:
- Missing evidence:
- Next action, owner, and timing:
- Expected signal and decision threshold:

Read the full file on GitHub · 87 lines

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 · 87 lines · 53 tokens per session scan A f006b492121f

Subscribe to this mod's changes

fishbone-diagram is a skill published in the GitHub repository fzfclee/consulting-skills (4 stars, last pushed 22d ago), licensed Apache-2.0. It adds 53 tokens to every session and 753 once invoked, about $0.0003 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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