send-experiment-designer SKILL.md skillA
send-experiment-designer from aaron-he-zhu/aaron-marketing-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add aaron-he-zhu/aaron-marketing-skills/send-experiment-designer@v20.2.0Pins v20.2.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- aaron-he-zhu/aaron-marketing-skills
- Path
email/deliver/send-experiment-designer/SKILL.md- Versions recorded
- 6
- Latest version
- v20.2.0, committed Oct 29, 2026
- First version recorded
- Jul 24, 2026
- Size
- 16,777 bytes
- Repository stars
- 3,102
- License
- Apache-2.0
Use when the user asks to "design an email A/B test", "set up a multivariate subject/CTA test", "run a send-time test", "build a hold-out group", or "is this email result statistically and practically material?"; produces a falsifiable hypothesis, one-variable-per-cell matrix, sample-size/MDE/duration/power plan, and an effect/uncertainty read from own ESP data. Applies only a precommitted owner-approved action rule; the helper never chooses a business action. Not for EQS/vetoes or writing the…
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
# Send Experiment Designer Designs email experiments across four modes and reads them out: a falsifiable hypothesis, a variant matrix that isolates **one** variable per cell, a sample-size / minimum-detectable-effect / run-duration / power plan, and a documented effect/uncertainty read. It may apply an owner-approved precommitted action rule, but statistical output alone never chooses a business action. **Mode set (pick one):** | Mode | Isolated variable | Primary metric | |------|-------------------|----------------| | `a-b` | one change — subject *or* preheader *or* CTA *or* creative | open (subject) / click / CTOR (CTA/creative) | | `multivariate` | 2+ factors crossed (e.g. subject × CTA), one variable per cell | the goal metric, powered per cell | | `send-time` | deploy hour/day; subject, segment, creative held constant | same-window engagement (open/click) | | `hold-out` | send vs no-send (randomized control receives nothing / current default) | conversion or revenue-per-recipient (incremental lift) | …
Read the whole file at its exact version.
How to install
mdr add aaron-he-zhu/aaron-marketing-skills/send-experiment-designer@sha256:359e22efd2d7c224The line at the top of this page pins the label v20.2.0, 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.
[](https://markdownregistry.com/a/art_fxau6s5qfnktuqf3)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Jul 24, 2026 and Oct 29, 2026, about one every 19 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v20.2.0 latest | 2026-10-29 | 0d0dabf | 16,777 B | A | view · diff |
| v20.1.0 | 2026-09-01 | 0c914b1 | 16,777 B | A | view · diff |
| v20.0.0 | 2026-08-20 | 879002a | 15,948 B | A | view · diff |
| v19.2.0 | 2026-08-10 | d09dd90 | 15,948 B | A | view · diff |
| v19.1.0 | 2026-08-01 | f744424 | 15,948 B | A | view · diff |
| v19.0.0 | 2026-07-24 | 407137c | 15,948 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 (16777 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
aaron-he-zhu/aaron-marketing-skills · 3,102 stars · license Apache-2.0 · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fxau6s5qfnktuqf3 GET https://markdownregistry.com/api/v1/resolve?ref=aaron-he-zhu/aaron-marketing-skills/send-experiment-designer GET https://markdownregistry.com/api/v1/blob/359e22efd2d7c2242aac91660fa1c69d3a103f84c7764bc7cff7ad632dd84151
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.