premortem

Convert high-stakes plans into failure analyses with revised plans and reports.

7|2|Updated Apr 30, 2026
One-click install
npx skills add https://github.com/MRWillisT/PullNexus --skill premortem-mrwillist
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: premortem
Source: https://github.com/MRWillisT/PullNexus/tree/main/skills/premortem
Command: npx skills add https://github.com/MRWillisT/PullNexus --skill premortem-mrwillist

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

It prevents costly late-stage surprises by identifying why a plan could plausibly fail before you commit fully.

Core Features & Use Cases

  • Frames a plan as “already failed”: Runs a structured premortem assuming failure 6 months from now to surface honest, specific failure causes.
  • Generates comprehensive failure reasons: Collects many grounded failure modes instead of generic risk lists, then deep-dives each one.
  • Produces actionable outputs: Synthesizes the most likely failure, the most dangerous failure, the hidden assumption, and a concrete revised plan plus a pre-launch checklist.

Quick Start

Use the premortem skill to stress-test your launch decision by saying: "Premortem this: I'm about to [describe the plan]—success means [define success], and it's for [who]."

Frequently Asked Questions about premortem

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What is a premortem analysis and when should I use it for risk planning?

A premortem analysis is a forward-looking risk assessment that assumes your plan has already failed to identify root causes. You should use it before committing to high-stakes decisions like product launches, strategy shifts, or pricing changes where late-stage surprises are expensive.

How do I run a premortem stress test on a product launch plan?

To run a premortem stress test, provide your plan details, define what success looks like, and identify who it affects. The analysis assumes failure six months later, generates specific failure modes, deep-dives each one, and synthesizes a revised plan with a pre-launch checklist.

Can I use a premortem for hiring decisions and partnership commitments?

Yes, you can use a premortem for hiring decisions, partnerships, and any commitment where being wrong is expensive. The analysis requires context gathering about the decision, frames it as already failed, and produces an actionable revised plan to prevent those specific failures.

What is the best way to identify hidden assumptions in a strategy shift?

The best way to identify hidden assumptions is running a structured premortem that assumes your strategy shift failed. By working backward from a hypothetical failure six months later, the analysis surfaces the most likely failure, the most dangerous failure, and hidden assumptions driving the decision.

What outputs does a premortem generate for decision-making?

A premortem generates an HTML or markdown report artifact containing the most likely failure, the most dangerous failure, hidden assumptions, and a concrete revised plan. It also produces a pre-launch checklist to validate critical risk factors before you commit.