codexkit-a-b-test-planner

Plan A/B experiments with hypotheses, sample sizes, and decision rules.

21|12|Updated Mar 20, 2026
One-click install
npx skills add https://github.com/hoavdc/CodexKit --skill codexkit-a-b-test-planner
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: codexkit-a-b-test-planner
Source: https://github.com/hoavdc/CodexKit/tree/main/skills/codexkit-a-b-test-planner
Command: npx skills add https://github.com/hoavdc/CodexKit --skill codexkit-a-b-test-planner

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Design and run statistically rigorous product experiments with clearly defined hypotheses, success criteria, and guardrails to avoid biased conclusions.

Core Features & Use Cases

  • Define falsifiable hypotheses and success criteria for experiments.
  • Compute required sample sizes and study durations from baseline metrics and MDE.
  • Specify randomization plans, exclusion criteria, and rollout rules for safe deployment.
  • Use cases include feature launches, UX optimizations, and funnel experiments across single or multi-variant tests.

Quick Start

Create a complete A/B test plan for a new checkout flow and estimate required sample size.

Frequently Asked Questions about codexkit-a-b-test-planner

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I calculate the required sample size for an A/B test?▼

To calculate sample size for an A/B test, you need baseline metrics and the minimum detectable effect (MDE) to perform power analysis and estimate study duration.

What are guardrail metrics in A/B testing?▼

Guardrail metrics in A/B testing are predefined safety criteria that prevent biased conclusions and ensure new product features or UX changes do not negatively impact key business outcomes.

How do I design a hypothesis for a multi-variant experiment?▼

Designing a hypothesis for a multi-variant experiment involves defining falsifiable success criteria, specifying randomization plans, and setting exclusion rules to ensure statistically rigorous product testing.

Can I use this for sequential A/B tests on funnel optimizations?▼

Yes, you can apply this to sequential A/B tests for funnel optimizations, feature launches, and UX changes across single or multiple variants to maintain statistical significance.

What is the best way to define rollout criteria for an experiment?▼

The best way to define rollout criteria is to establish predefined decision rules and randomization plans during A/B test planning to ensure safe deployment of product features.

Why do I need predefined decision rules for A/B testing?▼

Predefined decision rules are necessary for A/B testing to prevent biased conclusions, enforce guardrails, and provide clear rollout criteria based on statistical significance and hypothesis design.