experiment-designer skillA
experiment-designer is agent-read markdown (skill) from rizwanzafaris/product-manager-os: Turn an assumption or a growth bet into an experiment brief with a mechanism-stated hypothesis, one primary metric, guardrails with floors, an exposure design, a sample size reasoned from the minimum detectable effect, and stop rules written before launch. Use when a growth plan bet needs a test, when an assumption register row is low confidence and high impact, when a price change should be tried on a slice first, or when someone says "let us just A/B it". Takes the assumption, the metric candi.
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.
What the file says
# Experiment Designer: a test that can fail, sized before it runs Experiments fail before they start. The hypothesis has a direction and no mechanism, the metric is chosen after the data arrives, the sample size is a guess, someone peeks on day three, and a "win" ships that quietly hurt retention. This skill writes the decision rule while everyone is still ignorant of the result, and sizes the test from the effect that would change the decision rather than the effect the team hopes for. ## Files this skill drives - [../../templates/operate/experiment-brief.md](../../templates/operate/experiment-brief.md), every section - [../../frameworks/discovery/assumption-mapping.md](../../frameworks/discovery/assumption-mapping.md), the test card before and the learning card after (Bland and Osterwalder, Testing Business Ideas, 2019) - [../../templates/definition/assumptions-register.md](../../templates/definition/assumptions-register.md), the row under test, moved to TESTING - [../../templates/planning/growth-plan.md](../../templates/planning/growth-plan.md), the bet it serves and the ledger row it ends in …
Read the whole file at its exact version.
How to install
mdr add rizwanzafaris/product-manager-os/experiment-designer@git:20260919.72235e0mdr add rizwanzafaris/product-manager-os/experiment-designer@sha256:20f735499c400bafPin 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.
[](https://markdownregistry.com/a/art_66c3dy2mk4bnfqqw)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260919.72235e0 latest | 2026-09-19 | 72235e0 | 10,601 B | A | view · diff |
| git:20260903.a2ef42e | 2026-09-03 | a2ef42e | 8,906 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 (10601 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
rizwanzafaris/product-manager-os · 4 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_66c3dy2mk4bnfqqw GET https://markdownregistry.com/api/v1/resolve?ref=rizwanzafaris/product-manager-os/experiment-designer GET https://markdownregistry.com/api/v1/blob/20f735499c400baf2c5ccaf8a5ee79084d861ba2715ffef041247345ca850306
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