premortem-skill

premortem-skill

A universal premortem skill for high-stakes decisions — installable across Claude Code, Codex CLI, and Cursor with a single command.

The premortem method (Gary Klein, validated by Wharton/Cornell prospective-hindsight research) inverts standard risk thinking: instead of asking "what could go wrong," it forces the analyst to assume the decision already failed and reconstruct causes of death by working backward.

Install

curl -fsSL https://raw.githubusercontent.com/procoders/premortem-skill/main/install.sh | bash

The installer detects which AI tools are present (Claude Code, Codex CLI, Cursor) and installs into each. See docs/INSTALL.md for manual install instructions and the Claude Code marketplace alternative.

Use

In Claude Code:

/premortem

In any harness, natural language also triggers the skill — in Russian or English:

• премортем этого запуска
• что может пойти не так с X
• stress-test this plan
• run a premortem on the pricing change

See docs/USAGE.md for worked examples.

What it covers

Four decision domains, with one reference file loaded per run based on context:

• Business — launches, pricing, hiring, marketing
• Strategy — pivots, M&A, fundraising, market entry
• Technical — architecture, migrations, stack choice
• Life — personal decisions, gated by explicit consent (skill refuses for emotional-crisis contexts)

Architecture

See docs/specs/2026-05-18-premortem-skill-design.md for the full design and docs/ARCHITECTURE.md for the contributor guide.

Uninstall

curl -fsSL https://raw.githubusercontent.com/procoders/premortem-skill/main/uninstall.sh | bash

License

MIT — see LICENSE.