pre-mortem-and-red-team

pre-mortem-and-red-team is a skill for Claude Code from daddia/claude-for-strategy. It costs 74 tokens per session (1,997 once invoked), scanned A, original, MIT.

A structured challenge of a proposed decision, deal, or programme before people commit to it. It assumes the plan failed, looks for evidence that could disprove it, and records risks and evidence gaps.

In plain words
What is it for?
Use it to test a near-final recommendation, find evidence needed to verify it, run a devil’s-advocate review, and score decision quality before approval. It can also flag when legal, compliance, or security review is needed.
Why use it?
It exposes failure modes and weak assumptions before they become expensive problems. It gives decision-makers a reasoned challenge without making the final go-or-no-go decision.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths; mentions CLAUDE.md.

Part of the consulting plugin — 9 skills shipped together

Good fit Use it to test a near-final recommendation, find evidence needed to verify it, run a devil’s-advocate review, and score decision quality before approval. It can also flag when legal, compliance, or security review is needed.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/daddia/claude-for-strategy/pre-mortem-and-red-team
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 daddia/claude-for-strategy --skill pre-mortem-and-red-team
Clone the repo
git clone --depth 1 https://github.com/daddia/claude-for-strategy

Made for: Claude Code.

Or install consulting, the plugin that ships this one along with the rest of its 9 skills.

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-and-red-team

README.md
[![agentmods](https://agentmods.dev/badge/skills/daddia/claude-for-strategy/pre-mortem-and-red-team/github.svg)](https://agentmods.dev/skills/daddia/claude-for-strategy/pre-mortem-and-red-team)
Your own site
<a href="https://agentmods.dev/skills/daddia/claude-for-strategy/pre-mortem-and-red-team"><img src="https://agentmods.dev/badge/skills/daddia/claude-for-strategy/pre-mortem-and-red-team/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-and-red-team

Your own site · 80×15
<a href="https://agentmods.dev/skills/daddia/claude-for-strategy/pre-mortem-and-red-team"><img src="https://agentmods.dev/badge/skills/daddia/claude-for-strategy/pre-mortem-and-red-team.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,997 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 $0.00074 $0.01997
Opus 5 $0.00037 $0.00999
Sonnet 5 $0.00015 $0.00399
Haiku 4.5 $0.00007 $0.00200

Measured 11d ago against content hash 1fd747be41c6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

pre-mortem-and-red-team 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 11d 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.

consulting/skills/pre-mortem-and-red-team/SKILL.md · 192 lines

How it starts

The opening of the file, as written. The whole thing — 192 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pre-Mortem and Red Team

When to use

Stress-test a recommendation, deal, or program before commitment — structured pre-mortem (assume failure, work backward), dis-confirming evidence hunt, devil's-advocate pass, and decision-quality score.

Use after analysis is drafted (business-case, evaluate-strategic-option, map-competitive-landscape) and before board, IC, or sponsor sign-off.

What this skill does not do

  • Does not veto decisions — surfaces failure modes and evidence gaps; strategist decides proceed / pivot / stop.
  • Does not replace legal, compliance, or security review — flags when those lanes are needed.
  • Does not invent dis-confirming data — names searches and witnesses needed; tags model knowledge [verify].

Preconditions

Input If missing
The recommendation or option under test Ask — cannot pre-mortem without a stated bet
Decision audience and stakes Ask once; calibrates depth
Supporting analysis artifact Proceed from user summary; flag thin evidence

Provisional mode

Thin input: run abbreviated pre-mortem on stated recommendation only; confidence structured first pass; list evidence needed for full red-team.

Trust spine

  • Confidence bands (option-evaluation):
    • High: Dis-confirming search run; devil's-advocate challenges tied to evidence; decision-quality score with explicit kill triggers.
    • Medium: Pre-mortem complete; some dis-confirming paths unexplored — listed.
    • Low: Recommendation paraphrase only — scaffold, not clearance.
  • Strategic advice vs. support (mandatory): Surfaces challenges; does not silently pick stop/go — [review] on proceed recommendation.
  • Accountability gap: Decision-quality score forces engagement; no "looks fine" conclusion without scored dimensions.
  • Per ../../references/trust-conventions.md for GATE before external distribution.

Assumption audit

Assumption Status If wrong, what breaks
Success conditions are explicit [stated / implied / missing] Pre-mortem targets wrong failure
Key dependencies named [complete / partial / unknown] Blind spots in failure tree
Dissenting stakeholders identified [named / unknown] Devil's advocate too friendly
Evidence for headline claim [sourced / partial / narrative only] Red team argues past the analysis

Read the full file on GitHub · 192 lines

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. 11d ago First seen · 192 lines · 74 tokens per session scan A 1fd747be41c6

Subscribe to this mod's changes

pre-mortem-and-red-team is a skill published in the GitHub repository daddia/claude-for-strategy (2 stars, last pushed 2mo ago), licensed MIT. It adds 74 tokens to every session and 1,997 once invoked, about $0.0004 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.

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