premortem SKILL.md skillA
premortem from broomva/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add broomva/skills/premortem@git:20260628.9edbf07Pins git:20260628.9edbf07 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- broomva/skills
- Path
skills/strategy/premortem/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260628.9edbf07, committed Jun 28, 2026
- Size
- 16,965 bytes
- Repository stars
- 5
- License
- MIT
Run a premortem on any plan, launch, product, hire, strategy, or decision. Assumes it already failed 6 months from now and works backward to find every reason why. Produces a revised plan with blind spots exposed. MANDATORY TRIGGERS: 'premortem this', 'premortem my', 'run a premortem', 'what could kill this', 'future-proof this', 'stress test this plan', 'what am i missing here', 'find the blind spots'. STRONG TRIGGERS: 'what could go wrong', 'am i missing anything', 'poke holes in this'…
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
# Premortem > **Attribution:** This skill is adapted from [@itsolelehmann](https://x.com/itsolelehmann)'s premortem AI-skill formulation, posted to X on 2026-05-02 ([source thread](https://x.com/itsolelehmann/status/2050548948419645488)) as part of his Skillstack work. The underlying method is Gary Klein's premortem technique (Harvard Business Review, 2007), popularized by Daniel Kahneman in *Thinking, Fast and Slow*. This version is bundled with the Broomva Stack's `strategy-skills` (Layer 7 — Strategy & Decision Intelligence). Distinct from the bundled `pre-mortem` skill, which uses a structured-scoring approach; this one uses parallel sub-agent deep-dives and produces an HTML report. A premortem is the opposite of a postmortem. Instead of figuring out what went wrong after something fails, you imagine it already failed and figure out why before you start. The method comes from psychologist Gary Klein. He published it in Harvard Business Review. Daniel Kahneman (the Nobel Prize-winning psychologist behind "Thinking, Fast and Slow") called it his single most valuable decision-making technique. Google, Goldman Sachs, and Procter & Gamble all use it before major decisions. …
Read the whole file at its exact version.
How to install
mdr add broomva/skills/premortem@sha256:c4ce3ec393fb869aThe line at the top of this page pins the label git:20260628.9edbf07, 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.
[](https://markdownregistry.com/a/art_n47h4pr54tmvzn4i)
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Versions
The registry has recorded 1 version of this file, committed on Jun 28, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (16965 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
broomva/skills · 5 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_n47h4pr54tmvzn4i GET https://markdownregistry.com/api/v1/resolve?ref=broomva/skills/premortem GET https://markdownregistry.com/api/v1/blob/c4ce3ec393fb869a08db510866008d7949b28e4866134b7e0333a59af63d3496
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.