Agent skill

decision-frameworks

Use when choosing between mutually exclusive strategic paths or building a repeatable decision process—constructs Decision Matrices with probability estimates and runs Pre-Mortems.

majiayu000github.com/majiayu000GitHub ↗
claude-codeMIT
Install
npx skills add majiayu000/claude-skill-registry --skill decision-frameworks-joellewis-skill-library --agent claude-code

Same command for any agent — swap --agent for codex, cursor, copilot.

Facts
Files in the skill folder: 2
SKILL.md size: 7 KB
Bundled scripts: none
Requires: Claude Code and compatible agent products
Path: skills/analysis/decision-frameworks-joellewis-skill-library/SKILL.md
Open the folder on GitHub →
Where it comes from
Stars: 534
Language: HTML

Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.

From the SKILL.md

## Overview Decision frameworks provide the structural rigor to make high-quality choices under uncertainty. This skill transforms decision-making from an emotional "gut feel" into a probabilistic process by decoupling outcomes from process, identifying cognitive biases, and utilizing a latticework of mental models to uncover second-order consequences. ## Guiding Principles ### Principle 1: Decisions are Bets (Source: Duke, *Thinking in Bets*) Every decision is a bet on a specific future. Shift from binary "Right/Wrong" thinking to probabilistic "Confidence" thinking. Acknowledging uncertainty (e.g., "I am 70% confident") improves decision quality and reduces the sting of bad outcomes. ### Principle 2: Anti-Resulting (Source: Duke, *Thinking in Bets*) Do not judge a decision solely by its outcome. A "good" result can come from a "bad" process due to luck. Evaluate the *process* used at the time of the decision, not the final result. ### Principle 3: Latticework of Models (Source: Munger, *Poor Charlie's Almanack*) You cannot make wise decisions with a single mental model. You must have a "latticework" of models from multiple disciplines (math, physics, biology, psychology) to avoid

What's inside
Steps it walks through
  1. Overview
  2. Guiding Principles
  3. Principle 1: Decisions are Bets (Source: Duke, Thinking in Bets)
  4. Principle 2: Anti-Resulting (Source: Duke, Thinking in Bets)
  5. Principle 3: Latticework of Models (Source: Munger, Poor Charlie's Almanack)
  6. Principle 4: Circle of Competence (Source: Parrish, Great Mental Models v1)
  7. Principle 5: Pragmatic Truth (Source: Sivers, Useful Not True)
  8. When to Use This Skill
  9. When NOT to Use This Skill
  10. Core Process
  11. Step 1: Frame the Decision
  12. Step 2: Build the Decision Matrix
  13. Step 3: Apply Mental Model Stress-Tests
  14. Step 4: Perform a Pre-Mortem
Ships with 1 file
  • metadata.json
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About this skill
What does the decision-frameworks skill do?

Use when choosing between mutually exclusive strategic paths or building a repeatable decision process—constructs Decision Matrices with probability estimates and runs Pre-Mortems.

How do I install it?

Run `npx skills add majiayu000/claude-skill-registry --skill decision-frameworks-joellewis-skill-library --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.

Where does this skill come from?

From majiayu000/claude-skill-registry, a repository with 534 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.

Is a popular skill a good skill?

Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.

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