cmo-ab-testing SKILL.md skillA
cmo-ab-testing from ai-marketing-os-ltd/cmo-so-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ai-marketing-os-ltd/cmo-so-skills/cmo-ab-testing@v0.11.7Pins v0.11.7 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ai-marketing-os-ltd/cmo-so-skills
- Path
plugins/cmo-so-cro/skills/cmo-ab-testing/SKILL.md- Versions recorded
- 5
- Latest version
- v0.11.7, committed Oct 19, 2026
- First version recorded
- Oct 17, 2026
- Size
- 11,204 bytes
- Repository stars
- 4
- License
- MIT
Design tests that can be trusted: hypothesis, sample size, duration, guardrails, and reading results correctly. Use when the user says things like "should I A/B test this"; "how long should this test run"; "is this result significant"; "variant B is winning after three days, can we stop"; "plan our experiment backlog"; "test two ad headlines properly".
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 testing & experiments Plans experiments whose results can be trusted and reads finished tests honestly. Most failed tests fail before launch: no clear hypothesis, too little traffic for the effect hoped for, or a stopping rule invented after peeking. This skill fixes that with a written plan (hypothesis, metrics, sample size, duration, decision rule), a disciplined readout, and a backlog that turns single tests into a programme. ## When to use - "Should we test this?", "how long do we run it?", "is this significant?", "can we call it?" - Testing page changes, signup or onboarding steps, ad creative and audiences, email subject lines. - Building a prioritised experiment backlog and a learnings log. - Not for: finding what to change in the first place (`cmo-page-cro`, `cmo-landing-page-audit`), writing ad variants (`cmo-ad-creative`), or setting up analytics events (`cmo-tracking-setup`). ## Before you start - Ask, one at a time: what decision this test informs; the change and the evidence behind it; the primary metric's current rate; daily eligible traffic (or list size); the smallest lift that would change the decision; the tool. …
Read the whole file at its exact version.
How to install
mdr add ai-marketing-os-ltd/cmo-so-skills/cmo-ab-testing@sha256:7eefc11b3e9fbb31The line at the top of this page pins the label v0.11.7, 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.
[](https://markdownregistry.com/a/art_wtnhnh4cjrx4cpmz)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Oct 17, 2026 and Oct 19, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.11.7 latest | 2026-10-19 | f73e99e | 11,204 B | A | view · diff |
| v0.11.6 | 2026-10-19 | 4d1b95e | 11,204 B | A | view · diff |
| v0.11.5 | 2026-10-17 | 85699a9 | 11,204 B | A | view · diff |
| v0.11.4 | 2026-10-17 | f2d0d16 | 11,204 B | A | view · diff |
| v0.11.3 | 2026-10-17 | 61c2299 | 11,204 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11204 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
ai-marketing-os-ltd/cmo-so-skills · 4 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_wtnhnh4cjrx4cpmz GET https://markdownregistry.com/api/v1/resolve?ref=ai-marketing-os-ltd/cmo-so-skills/cmo-ab-testing GET https://markdownregistry.com/api/v1/blob/7eefc11b3e9fbb31bdded1b893ab41de33b0f86a4f6b6799990f6b7ad523e3db
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.