designing-experiments SKILL.md skillA
designing-experiments from foryourhealth111-pixel/vibe-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add foryourhealth111-pixel/vibe-skills/designing-experiments@git:20260430.453068cPins git:20260430.453068c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- foryourhealth111-pixel/vibe-skills
- Path
bundled/skills/designing-experiments/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260430.453068c, committed Apr 30, 2026
- First version recorded
- Feb 26, 2026
- Size
- 2,399 bytes
- Repository stars
- 3,758
- License
- Apache-2.0
Design experiments and quasi-experiments before analysis. Use when choosing study design, treatment/control structure, outcomes, assumptions, validation plans after scientific experiment failure, or which of DiD, ITS, synthetic control, or regression discontinuity fits the research question. For fitting models or estimating effects on existing data, use performing-causal-analysis instead.
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
# Designing Experiments
Helps choose and specify a research design before data analysis starts. This skill owns study-design decisions: what is treated, what is compared, what outcome is measured, which assumptions are required, which validation or recovery experiment should follow a failed scientific experiment, and which design is defensible.
It does not fit causal models, estimate treatment effects, interpret fitted model output from existing data, or debug software/build failures.
## Decision Framework
1. **Control Group?**
* **Yes**: Go to Step 2.
* **No**: Consider **Interrupted Time Series (ITS)**.
2. **Unit Structure?**
* **Single Treated Unit**:
* With multiple controls: **Synthetic Control (SC)**.
* No controls: **ITS**.
* **Multiple Treated Units**:
* With control group: **Difference-in-Differences (DiD)**.
3. **Time Structure?**
* **Panel Data** (Multiple units over time): Required for DiD and SC.
* **Time Series** (Single unit over time): Required for ITS.
## Method Quick Reference
…Read the whole file at its exact version.
How to install
mdr add foryourhealth111-pixel/vibe-skills/designing-experiments@sha256:6d8432ef4448736cThe line at the top of this page pins the label git:20260430.453068c, 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_xvqhnp3rxalxpd5h)
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Versions
The registry has recorded 3 versions of this file, between Feb 26, 2026 and Apr 30, 2026, about one every 32 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260430.453068c latest | 2026-04-30 | 453068c | 2,399 B | A | view · diff |
| git:20260430.0124814 | 2026-04-30 | 0124814 | 1,786 B | A | view · diff |
| git:20260226.1632f40 | 2026-02-26 | 1632f40 | 1,316 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 (2399 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
foryourhealth111-pixel/vibe-skills · 3,758 stars · license Apache-2.0 · pushed 2026-10-22 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_xvqhnp3rxalxpd5h GET https://markdownregistry.com/api/v1/resolve?ref=foryourhealth111-pixel/vibe-skills/designing-experiments GET https://markdownregistry.com/api/v1/blob/6d8432ef4448736cff92960769cf64a0ef63137fb245cc61bdcd1ef3d65d8f09
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.