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.
npx skills add pmprompt/claude-plugin-product-management --skill ab-test-designergit clone --depth 1 https://github.com/pmprompt/claude-plugin-product-managementWrote 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.
[](https://agentmods.dev/skills/pmprompt/claude-plugin-product-management/ab-test-designer)<a href="https://agentmods.dev/skills/pmprompt/claude-plugin-product-management/ab-test-designer"><img src="https://agentmods.dev/badge/skills/pmprompt/claude-plugin-product-management/ab-test-designer/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.
<a href="https://agentmods.dev/skills/pmprompt/claude-plugin-product-management/ab-test-designer"><img src="https://agentmods.dev/badge/skills/pmprompt/claude-plugin-product-management/ab-test-designer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00028 | $0.00498 |
| Opus 5 | $0.00014 | $0.00249 |
| Sonnet 5 | $0.00006 | $0.00100 |
| Haiku 4.5 | $0.00003 | $0.00050 |
Grade A, and why
ab-test-designer 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 10d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- ab-test-designer — 100% identical, 0 lines differ
How it starts
The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Domain Context
This skill implements a proven product management framework. The approach combines best practices from industry leaders and is designed for practical application in day-to-day PM work.
Input Requirements
- Context about your product, feature, or problem
- Relevant data, research, or constraints (recommended but optional)
- Clear articulation of what you're trying to achieve
A/B Test Designer
When to Use
- Testing a new feature or design variation
- Validating a hypothesis before full rollout
- Optimizing conversion rates or key metrics
- Choosing between multiple design approaches
- Need to make a data-driven decision on a change
What This Skill Does
Helps you design rigorous A/B tests with clear hypotheses, success metrics, sample size calculations, and analysis plans.
Instructions
Help me design an A/B test for [feature/change]. Include:
-
Hypothesis
- Current situation and metrics
- Proposed change
- Expected impact and why
-
Test Design
- Primary success metric
- Secondary metrics
- Sample size needed
- Test duration
- User segments to include/exclude
-
Variants
- Control (A): current experience
- Variant (B): new experience
- Any additional variants (C, D, etc.)
-
Risks and Controls
- Potential negative impacts
- Guardrail metrics
- When to stop the test early
-
Analysis Plan
- Statistical significance threshold
- How to handle edge cases
- Decision criteria
Feature context: [Add context about the change you want to test]
Best Practices
- Start with a clear, falsifiable hypothesis
- Choose one primary metric to avoid multiple comparison issues
- Calculate sample size upfront based on expected effect size
- Run tests for full weekly cycles to account for day-of-week effects
- Set a minimum test duration (usually 1-2 weeks)
- Define success criteria before running the test
- Monitor guardrail metrics (revenue, errors, performance)
Example
Input: Testing new onboarding flow vs current 3-step process Output: Hypothesis (new 1-step flow will increase co...
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.
- 10d ago First seen · 75 lines · 28 tokens per session scan A bb5d8e7727b5
ab-test-designer is a skill published in the GitHub repository pmprompt/claude-plugin-product-management (49 stars, last pushed 6mo ago), licensed MIT. It adds 28 tokens to every session and 498 once invoked, about $0.0001 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 2026-08-30.
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