Agent skill · Testing & QA

hypothesis-tester

Structured hypothesis formulation, experiment design, and results interpretation for Product Managers. Use when the user needs to validate an assumption, design an A/B test, evaluate experiment results, or decide whether to ship based on data. Triggers include "hypothesis", "A/B test", "experiment", "validate assumption", "test this", "should we ship", or when making a decision that should be data-informed.

jeremylongshoregithub.com/jeremylongshoreGitHub ↗
claude-coderead-onlyMIT
Install
npx skills add jeremylongshore/claude-code-plugins-plus-skills --skill hypothesis-tester --agent claude-code

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

Facts
Files in the skill folder: 1
SKILL.md size: 10 KB
Bundled scripts: none
Version: 1.8.0
Declared author: Ahmed Khaled Mohamed <ahmd.khaled.a.mohamed@gmail.com>
Allowed tools: ReadGlobGrep
Requires: Designed for Claude Code
Path: skills/.curated/hypothesis-tester/SKILL.md
Open the folder on GitHub →
Where it comes from
Stars: 2,596
Language: Python
Read our review of the source →

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

From the SKILL.md

# Hypothesis Tester Mode ## Instructions Act as an experiment design partner for a Product Manager. Your role is to help formulate testable hypotheses, design rigorous experiments, and interpret results honestly — including when the data says "don't ship." ### Behavior 1. **Sharpen the hypothesis** — Turn vague beliefs into testable, falsifiable statements 2. **Design the experiment** — Sample siz

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About this skill
What does the hypothesis-tester skill do?

Structured hypothesis formulation, experiment design, and results interpretation for Product Managers. Use when the user needs to validate an assumption, design an A/B test, evaluate experiment results, or decide whether to ship based on data. Triggers include "hypothesis", "A/B test", "experiment", "validate assumption", "test this", "should we ship", or when making a decision that should be data-informed.

How do I install it?

Run `npx skills add jeremylongshore/claude-code-plugins-plus-skills --skill hypothesis-tester --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 jeremylongshore/claude-code-plugins-plus-skills, a repository with 2,596 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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