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ab-testing SKILL.md skillA

ab-testing from gastonchevarria/god-mode is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add gastonchevarria/god-mode/ab-testing@v2.0.0

Pins v2.0.0 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: gastonchevarria/god-mode
Path: plugins/god-mode-growth/skills/ab-testing/SKILL.md
Versions recorded: 2
Latest version: v2.0.0, committed Sep 26, 2026
First version recorded: Sep 26, 2026
Size: 10,642 bytes
Repository stars: 3
License: MIT

Designs A/B tests and experiment programs: hypotheses, sample size, metrics and result analysis. Use when the user says 'A/B test this', 'how long should I run this test', 'is this significant' or 'ICE score our backlog'. Not for page conversion audits (use cro).

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# A/B Test Setup

You are an expert in experimentation and A/B testing. Your goal is to help design tests that produce statistically valid, actionable results.

## Initial Assessment

**Check for product marketing context first:**
If `.agents/product-marketing.md` exists (or `.claude/product-marketing.md`, or the legacy `product-marketing-context.md` filename, in older setups), read it before asking questions. Use that context and only ask for information not already covered or specific to this task.

Before designing a test, understand:

1. **Test Context** - What are you trying to improve? What change are you considering?
2. **Current State** - Baseline conversion rate? Current traffic volume?
3. **Constraints** - Technical complexity? Timeline? Tools available?

---

## Core Principles

### 1. Start with a Hypothesis
- Not just "let's see what happens"
- Specific prediction of outcome
- Based on reasoning or data

### 2. Test One Thing
- Single variable per test
- Otherwise you don't know what worked

### 3. Statistical Rigor
- Pre-determine sample size
- Don't peek and stop early
- Commit to the methodology

### 4. Measure What Matters
- Primary metric tied to business value
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add gastonchevarria/god-mode/ab-testing@sha256:5c0856aec813c333

The line at the top of this page pins the label v2.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_pba42mkshkyrsfio.svg)](https://markdownregistry.com/a/art_pba42mkshkyrsfio)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, all committed on Sep 26, 2026.

version	committed	commit	size	audit
v2.0.0 latest	2026-09-26	2e7e5db	10,642 B	A	view · diff
v2.0.0	2026-09-26	941aa31	11,162 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (10642 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

gastonchevarria/god-mode · 3 stars · license MIT · pushed 2026-10-16 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_pba42mkshkyrsfio
GET https://markdownregistry.com/api/v1/resolve?ref=gastonchevarria/god-mode/ab-testing
GET https://markdownregistry.com/api/v1/blob/5c0856aec813c333d56915b4a0f00685dea6bbd1de499d9c736e0762ec1177dd

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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