Pre-mortem 失敗シナリオ分析 SKILL.md skillA

Pre-mortem 失敗シナリオ分析 from s977043/river-review is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add s977043/river-review/Pre-mortem 失敗シナリオ分析@v0.1.0

Pins v0.1.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
s977043/river-review
Path
skills/upstream/pre-mortem/SKILL.md
Versions recorded
3
Latest version
v0.1.0, committed Jul 19, 2026
First version recorded
Jun 29, 2026
Size
5,765 bytes
Repository stars
7
License
MIT

変更が将来インシデントや技術的負債を引き起こすと仮定し、その原因と経路を逆算して設計の盲点を可視化する.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

## Pattern declaration

Primary pattern: Reviewer
Secondary patterns: Inversion
Why: 失敗シナリオ分析はチェックリスト型評価が主だが、設計判断を含まない変更では実行を止めるゲートが必要

## Goal / 目的

- 変更が「6ヶ月後にインシデントを引き起こした」と仮定し、その根本原因を逆算することで、生存バイアスや楽観バイアスを排除し、設計の致命的欠陥を事前に発見する。
- 通常のリスク分析では浮上しない「見落としがちな失敗経路」をあぶり出す。
- 既定 CI レビューでは自動発火しない(`/challenge` 等の明示呼び出し向け)。

## Non-goals / 扱わないこと

- 既知のベストプラクティス違反の指摘(それは既存スキルの役割)。
- 実装の細部(コードスタイル、命名規則など)への言及。
- すべての変更に対する網羅的なリスク列挙(重大な失敗シナリオに集中する)。

## Pre-execution Gate / 実行前ゲート

このスキルは以下の条件がすべて満たされない限り`NO_REVIEW`を返す。

- [ ] 差分に設計判断を含む変更がある(ADR、設計ドキュメント、アーキテクチャ変更)
- [ ] 変更が機械的なもの(誤字修正、フォーマット、コメントのみ)ではない
- [ ] テストコードやフィクスチャのみの変更ではない
- [ ] inputContextにdiffまたはfullFileが含まれている

ゲート不成立時の出力: `NO_REVIEW: pre-mortem — 設計判断を含む変更が検出されない`

## False-positive guards / 抑制条件

- すでにADRやデザインドキュメントでリスクと緩和策が明記されている項目は重複指摘しない。

## Rule / ルール

### 分析フレームワーク

1. **仮想失敗宣言**: 「この変更は6ヶ月後に深刻な障害を引き起こした」と断定する。
2. **逆算推論**: その障害に至る具体的な因果連鎖を3つ以上構築する。
3. **隠れた前提の発掘**: 変更が暗黙に依存している前提条件を列挙する。
4. **ドミノ効果の追跡**: 1つの前提が崩れたとき、何が連鎖的に壊れるかを追う。

### 失敗カテゴリ(優先順)

1. **データ破損・不整合**: スキーマ変更、マイグレーション、状態管理の欠陥
2. **障害の伝播**: 依存サービスの停止、タイムアウト未設定、リトライ暴走
3. **スケーラビリティの壁**: 暗黙のO(n²)、メモリリーク、接続プール枯渇
4. **運用不能**: ログ不足、ロールバック不可、監視の盲点
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add s977043/river-review/Pre-mortem 失敗シナリオ分析@sha256:4cdb0f33fd21e1fa

The line at the top of this page pins the label v0.1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_6mvjbm3flfmzzxqr.svg)](https://markdownregistry.com/a/art_6mvjbm3flfmzzxqr)

4 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Jun 29, 2026 and Jul 19, 2026, about one every 10 days.

versioncommittedcommitsizeaudit
v0.1.0 latest2026-07-19 eede0b3 5,765 BA view · diff
v0.1.02026-06-29 45e66bc 5,661 BA view · diff
v0.1.02026-06-29 b988700 5,677 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (5765 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

s977043/river-review · 7 stars · license MIT · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_6mvjbm3flfmzzxqr
GET https://markdownregistry.com/api/v1/resolve?ref=s977043/river-review/Pre-mortem 失敗シナリオ分析
GET https://markdownregistry.com/api/v1/blob/4cdb0f33fd21e1fa930602bf2a70a755644f2caae9b79b5d03b104f03c1762ab

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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