ab-testing SKILL.md skillA

ab-testing from gtmagents/gtm-agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add gtmagents/gtm-agents/ab-testing@git:20251119.8c446bf

Pins git:20251119.8c446bf in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: gtmagents/gtm-agents
Path: plugins/email-marketing/skills/ab-testing/SKILL.md
Versions recorded: 1
Latest version: git:20251119.8c446bf, committed Nov 19, 2025
Size: 1,381 bytes
Repository stars: 431
License: Apache-2.0

Use when designing experiments for subject lines, offers, cadences, or.

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

# Experimentation & A/B Testing Skill

## When to Use
- Validating new subject lines or creative.
- Testing segmentation hypotheses (persona vs behavior).
- Optimizing cadence, timing, or automation triggers.

## Framework
1. **Hypothesis** – define expected uplift + rationale.
2. **Metric Selection** – primary (open/click/conv) + guardrails (unsubs, spam).
3. **Sample Sizing** – ensure stat significance (min 500 recipients per variant or use power calculator).
4. **Execution** – randomize, keep variants isolated, limit simultaneous tests.
5. **Analysis** – use z-test or Bayesian uplift; document learnings.

## Templates
- Experiment brief (hypothesis, segments, KPI, risk guardrails).
- Variant table (control vs test inputs, creative asset links, owner).
- Calculator sheet for minimum detectable effect + sample size.
- Post-test debrief doc capturing learnings + rollout plan.

## Experiment Ideas
- Subject line vs preview text combos.
- CTA placement (hero vs footer).
- Personalization depth (basic vs dynamic modules).
- Wait times between touches.

## Tips
- Run no more than two tests per journey simultaneously.
- Recycle learnings into playbooks + automation templates.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add gtmagents/gtm-agents/ab-testing@sha256:63dd5ac8af63b162

The line at the top of this page pins the label git:20251119.8c446bf, 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_axa6pkludbmnlsqa.svg)](https://markdownregistry.com/a/art_axa6pkludbmnlsqa)

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

Versions

The registry has recorded 1 version of this file, committed on Nov 19, 2025.

version	committed	commit	size	audit
git:20251119.8c446bf latest	2025-11-19	8c446bf	1,381 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 (1381 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

gtmagents/gtm-agents · 431 stars · license Apache-2.0 · pushed 2026-04-03 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_axa6pkludbmnlsqa
GET https://markdownregistry.com/api/v1/resolve?ref=gtmagents/gtm-agents/ab-testing
GET https://markdownregistry.com/api/v1/blob/63dd5ac8af63b16233c6089c19954e3da9ee8df75549091aeef18cc4bf03227e

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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