01
It starts by itself
plan document changed. Runs in Claude Code routine or GitHub Actions.
- ↻ plan document changed
a PRD, roadmap or strategy document is added or edited
phuryn · 9K installsStrategy Red-Team skill
Runs by itself, plan document changed.
Every plan gets attacked first.
Install the Strategy Red-Team skill and make it a habit: follow https://gethabit.dev/skills/phuryn/strategy-red-team.md
- 1Copy
- 2Paste into Claude Code, Codex or Cursor
- 3It runs by itself
9K installs27K starsMIT licenceSource on GitHub ↗
Strategy Red-Team
by phuryn · 9K installs
The skill
The strategy red-team skill attacks the load-bearing assumptions of a PRD, roadmap or strategy, ranks failure modes and returns the cheapest test and kill criterion for each, for product managers and founders before a big decision.
Only when you ask.
The habit
Every plan gets attacked first.
↻ Runs by itselfplan document changed
How the habit works.
You don't have to.
When does it start? How does it check its work? What does it remember?
One run, step by step.
Then it stops.
One plan per run, at most five kill-assumptions, one retry.
- 01
Extract claims
List what the plan asserts and keep only the claims that would sink it if false.
- 02
Steelman and attack
State the best case for each load-bearing claim, then attack that version.
- 03
Write failure modes
Phrase each risk as a concrete, falsifiable Fails if condition.
- 04
Rank them
Order by impact, likelihood of being wrong and how cheap the test is.
- 05
Self-refute
Say plainly where the plan holds up and never invent a weakness.
- 06
Give next actions
For each surviving assumption add evidence to get this week, a kill criterion and the cheapest test.
- 07
Format and log
Write the ranked red-team report and add open tests to the board.
What it may do.
Nothing more.
It writes only in its own folder and asks you before anything goes out.
- Writes only inloops/strategy-red-team-loop/**
- Talks tono outside service
- Sendsnothing
- Your OKNothing goes out, so it needs no OK.
Is it for you?
Use it when it fits.
Read both lists. If the left one sounds like you, the Strategy Red-Team skill helps.
Use it when
- ✓ Stress-testing a plan or strategy
- ✓ Preparing a doc for executive review
- ✓ Challenging the key assumptions
Skip it when
- – You want a full risk register
- – The plan is not written down yet
Strategy Red-Team skill, answered.
Is this a pre-mortem?
No. A pre-mortem imagines failure after the fact; this attacks the assumptions now, while they are still cheap to test.
Will it just list generic risks?
No. Every item must be specific to the plan, and sound claims are called sound.
Can it use a second model?
Only if you ask. Then it runs the plan through another model and flags where they disagree.
How do I install the Strategy Red-Team skill?
Copy the prompt at the top into your agent. It installs the skill from phuryn/pm-skills and sets up the habit. Or run npx skills add phuryn/pm-skills --skill strategy-red-team.
Is the Strategy Red-Team skill free?
Yes. It is published under MIT. Habit is free too.
Strategy Red-Team. Now as a habit.
Install the Strategy Red-Team skill and make it a habit: follow https://gethabit.dev/skills/phuryn/strategy-red-team.md
All phuryn skills →More planning skills →
Works in
- Claude Code
- Codex
- Cursor
- ChatGPT
- Claude app
Made by phuryn, published under MIT. Habit links to the original and never changes it. Is this your skill?