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Updated 4mo ago

by MADEVAL

Pre-Mortem-Skill

A structured failure-analysis workflow that assumes your plan already failed and works backward to find every reason why. Based on Gary Klein's premortem method (Harvard Business Review), validated by prospective-hindsight research from Wharton and Cornell

View on GitHub (opens in a new tab)

51 GitHub stars (51)

+6 in 30 days

Stars gained per day · daily snapshots since Sep 30
Stars gained per day, Sep 30 to Nov 5: +6 in total; the busiest day was Nov 2 with +3 stars.Oct 1: 0 starsOct 2: 0 starsOct 3: 0 starsOct 4: 0 starsOct 5: 0 starsOct 6: 0 starsOct 7: 0 starsOct 8: 0 starsOct 9: 0 starsOct 10: 0 starsOct 11: 0 starsOct 12: 0 starsOct 13: 0 starsOct 14: 0 starsOct 15: 0 starsOct 16: 0 starsOct 17: 0 starsOct 18: 0 starsOct 19: 0 starsOct 20: 0 starsOct 21: 0 starsOct 22: 0 starsOct 23: 0 starsOct 24: 0 starsOct 25: 0 starsOct 26: 0 starsOct 27: 0 starsOct 28: 0 starsOct 29: 0 starsOct 30: 0 starsOct 31: 0 starsNov 1: 0 starsNov 2: +3 starsNov 3: 0 starsNov 4: 0 starsNov 5: +3 stars
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  • 1 skill (1 skills found in its SKILL.md files)
  • 11 forks (11 forks)
  • 4mo ago last update (Last updated 4mo ago)

Install

Skills CLI

npx skills add MADEVAL/Pre-Mortem-Skill

Asks which agents to install it for. Add -g to install it for every project.

Claude Code

git clone https://github.com/MADEVAL/Pre-Mortem-Skillcp -r "Pre-Mortem-Skill" ~/.claude/skills/Pre-Mortem-Skill

Copies the premortem skill into ~/.claude/skills/ for every project (use .claude/skills/ for one project).

Plugin

/plugin marketplace add MADEVAL/Pre-Mortem-Skill

Run inside Claude Code if the repository ships a plugin marketplace, then pick plugins from /plugin.

Skills can run code on your machine — read the SKILL.md first.

What it does

In the author's own words, from each skill's SKILL.md.

  • premortem

    Run a premortem on any plan, launch, product, hire, strategy, or decision. Assumes it already failed and works backward to find every reason why. Produces a revised plan with blind spots exposed, likelihood/impact scores on each failure mode, and a concrete committed action. MANDATORY TRIGGERS: 'premortem this', 'premortem my', 'run a premortem', 'what could kill this', 'future-proof this', 'stre…

    Skill.md on GitHub (opens in a new tab)

Review before you install

A skill is a set of instructions and scripts your agent will follow, and it can run code on your machine. Read the SKILL.md and any scripts first — this listing is not a security review.