pre-mortem-stress-test

pre-mortem-stress-test is a skill for Claude Code, Codex from GktuOktay/ai-skills. It costs 65 tokens per session (465 once invoked), scanned A, original, MIT.

A pre-release review that imagines how a system could fail in production, including under traffic spikes, service outages, data corruption, or authorization attacks. It produces a report of likely failure points and mitigations.

In plain words
What is it for?
Use it before major architecture, database, or critical-component changes to examine scaling, third-party failures, data safety, and access control.
Why use it?
It exposes weak parts of a design before they cause real incidents. The review focuses attention on bottlenecks, dependency failures, inconsistent data, and security bypasses.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it before major architecture, database, or critical-component changes to examine scaling, third-party failures, data safety, and access control.

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Install with agentmods
npx agentmods add skills/gktuoktay/ai-skills/pre-mortem-stress-test
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 GktuOktay/ai-skills --skill pre-mortem-stress-test
Clone the repo
git clone --depth 1 https://github.com/GktuOktay/ai-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 pre-mortem-stress-test

README.md
[![agentmods](https://agentmods.dev/badge/skills/gktuoktay/ai-skills/pre-mortem-stress-test/github.svg)](https://agentmods.dev/skills/gktuoktay/ai-skills/pre-mortem-stress-test)
Your own site
<a href="https://agentmods.dev/skills/gktuoktay/ai-skills/pre-mortem-stress-test"><img src="https://agentmods.dev/badge/skills/gktuoktay/ai-skills/pre-mortem-stress-test/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 pre-mortem-stress-test

Your own site · 80×15
<a href="https://agentmods.dev/skills/gktuoktay/ai-skills/pre-mortem-stress-test"><img src="https://agentmods.dev/badge/skills/gktuoktay/ai-skills/pre-mortem-stress-test.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 465 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 $0.00065 $0.00465
Opus 5 $0.00032 $0.00233
Sonnet 5 $0.00013 $0.00093
Haiku 4.5 $0.00006 $0.00047

Measured 12d ago against content hash 698237c2eff8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

pre-mortem-stress-test 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 12d 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.

.agents/skills/pre-mortem-stress-test/SKILL.md · 29 lines

What it actually says

Pre-Mortem & System Stress Tester

Bu skill, büyük bir mimari değişiklik, yeni bir veritabanı veya kritik bir sistem bileşeni canlıya alınmadan önce çalışır. "Ön Otopsi" (Pre-Mortem) yöntemiyle sistemin gelecekte çökeceği senaryoyu simüle eder ve en zayıf halkanı tespit eder.


💥 Stres Testi Katmanları

  1. Yük ve Ölçeklenme Çöküşü (Traffic Spikes): Aniden 10x trafik gelirse sistem hangi noktada tıkanır? (Connection Pool, Rate Limit, CPU bottleneck).
  2. Bağımlılık İflası (Third-party Failure): Harici servis (Payment Gateway, Auth Provider, Mail API) 500 hatası verirse veya 5 saniye gecikirse sistem nasıl davranır?
  3. Veri Tutarsızlığı (Data Corruption): Veritabanı yazma anında sunucu kapanırsa veri tutarlı kalır mı? (Transaction rollback var mı?).
  4. Güvenlik & Yetkilendirme İhlali (Bypass): Saldırgan bu akışta yetki kontrolünü nasıl atlatabilir?

📊 Raporlama Formatı

💣 Sistem Ön Otopsi Raporu (Pre-Mortem Simulation)

  • 💀 Muhtemel Çöküş Noktası #1: [Senaryo ve Bileşen]
  • ⚠️ Zayıf Halka (Single Point of Failure): [Neden patlar?]
  • 🛡️ Önleyici Savunma (Mitigation Plan): [Nasıl engellenir?]
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. 12d ago First seen · 29 lines · 65 tokens per session scan A 698237c2eff8

Subscribe to this mod's changes

pre-mortem-stress-test is a skill published in the GitHub repository GktuOktay/ai-skills (2 stars, last pushed 9d ago), licensed MIT. It adds 65 tokens to every session and 465 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.