ab-test-setup SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
ab-test-setup from francostino/opencode-skills-collection is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add francostino/opencode-skills-collection/ab-test-setup@git:20260906.7d37dc9Pins git:20260906.7d37dc9 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- francostino/opencode-skills-collection
- Path
bundled-skills/ab-test-setup/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260906.7d37dc9, committed Sep 6, 2026
- First version recorded
- Jul 7, 2026
- Size
- 8,985 bytes
- Repository stars
- 87
- License
- MIT
Use when designing an A/B or split test: define the hypothesis, control and variants, estimate sample size, verify tracking, and predeclare metrics and stopping rules.
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 ## 1️⃣ Purpose & Scope Define an experiment that can answer a specific product question, and verify its assumptions before exposing users. This procedure cannot guarantee validity by itself. - Documents the stopping rule - Estimates sample needs under stated assumptions - Makes the hypothesis and decision criteria reviewable --- ## 2️⃣ Pre-Requisites You must have: - A clear user problem - Access to an analytics source - Roughly estimated traffic volume ### Hypothesis Quality Checklist A valid hypothesis includes: - Observation or evidence - Single, specific change - Directional expectation - Defined audience - Measurable success criteria --- ## 3️⃣ Hypothesis Lock (Hard Gate) Before designing variants or metrics, you MUST: - Present the **final hypothesis** - Specify: - Target audience - Primary metric - Expected direction of effect - Minimum Detectable Effect (MDE) Use the hypothesis already agreed in the task. If a launch-critical choice is missing, present the concrete choice for confirmation while continuing independent analysis. Do not repeatedly request approval for a decision already authorized. --- …
Read the whole file at its exact version.
How to install
mdr add francostino/opencode-skills-collection/ab-test-setup@sha256:f5376f3e111a5c24The line at the top of this page pins the label git:20260906.7d37dc9, 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_ld3qo3gz3vhcb7c3)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jul 7, 2026 and Sep 6, 2026, about one every 30 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260906.7d37dc9 latest | 2026-09-06 | 7d37dc9 | 8,985 B | A | view · diff |
| git:20260730.90257ed | 2026-07-30 | 90257ed | 6,444 B | A | view · diff |
| git:20260707.168343c | 2026-07-07 | 168343c | 6,443 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 (8985 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
francostino/opencode-skills-collection · 87 stars · license MIT · pushed 2026-10-18 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ld3qo3gz3vhcb7c3 GET https://markdownregistry.com/api/v1/resolve?ref=francostino/opencode-skills-collection/ab-test-setup GET https://markdownregistry.com/api/v1/blob/f5376f3e111a5c244bb894d984068d78c40ce973c69d59d90cb01b5f07a67539
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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