coreyhaines31/marketingskills · skills/ab-testing/SKILL.md

ab-testing skillA

ab-testing is agent-read markdown (skill) from coreyhaines31/marketingskills: When the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," "hypothesis," "should I test this," "which version is better," "test two versions," "statistical significance," "how long should I run this test," "growth experiments," "experiment velocity," "experiment backlog," "ICE score," "experimentation program.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add coreyhaines31/marketingskills/ab-testing@v2.0.0
Exact content
mdr add coreyhaines31/marketingskills/ab-testing@sha256:1fd229160f6014f3

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

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

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Versions

versioncommittedcommitsizeaudit
v2.0.0 latest2026-05-14 30f9b9a 11,162 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (11162 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

coreyhaines31/marketingskills · 47,562 stars · license MIT · pushed 2026-09-05 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ugciajcbwmzhjehi
GET https://markdownregistry.com/api/v1/resolve?ref=coreyhaines31/marketingskills/ab-testing
GET https://markdownregistry.com/api/v1/blob/1fd229160f6014f3f2d7c92cc7d2f991fbf8dc9ed68aac9793c71b408a6d1144