srm-check SKILL.md skillA
srm-check from ai-analyst-lab/ai-analyst is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ai-analyst-lab/ai-analyst/srm-check@git:20260902.b370de6Pins git:20260902.b370de6 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ai-analyst-lab/ai-analyst
- Path
.claude/skills/srm-check/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260902.b370de6, committed Sep 2, 2026
- First version recorded
- Aug 27, 2026
- Size
- 9,012 bytes
- Repository stars
- 322
- License
- MIT
Automatically detect Sample Ratio Mismatch (SRM) in experiment or A/B test data before any analysis proceeds. SRM is a critical randomization integrity check — if the treatment/control split deviates significantly from the expected ratio, the experiment is compromised and results cannot be trusted. This skill acts as a safety gate that blocks analysis when randomization is broken. Use this skill whenever you detect experiment or A/B test data — look for columns like "variant", "group…
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
# Skill: SRM Check (Sample Ratio Mismatch) ## Purpose Automatically detect Sample Ratio Mismatch in experiment data before any analysis proceeds. SRM is a randomization integrity check — if the treatment/control split deviates significantly from the expected ratio, the experiment is compromised and results cannot be trusted. This skill acts as a safety gate that blocks analysis when randomization is broken. ## When to Use Apply this skill when: 1. **Loading any experiment or A/B test dataset** — auto-fire on detection of treatment/control columns (e.g., `variant`, `group`, `treatment`, `arm`, `experiment_group`) 2. **Before any treatment effect calculation** — SRM must pass before comparing outcomes 3. **When the Experiment Analyzer agent starts** — first step of any experiment analysis workflow This skill auto-fires on experiment data detection. Do NOT wait to be asked. ## Instructions ### What Is SRM? …
Read the whole file at its exact version.
How to install
mdr add ai-analyst-lab/ai-analyst/srm-check@sha256:8cc05c00dec437ddThe line at the top of this page pins the label git:20260902.b370de6, 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_k5fuky57lggzcb3n)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Aug 27, 2026 and Sep 2, 2026, about one every 6 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260902.b370de6 latest | 2026-09-02 | b370de6 | 9,012 B | A | view · diff |
| git:20260827.7ff2e25 | 2026-08-27 | 7ff2e25 | 9,507 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 (9012 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-analyst-lab/ai-analyst · 322 stars · license MIT · pushed 2026-09-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_k5fuky57lggzcb3n GET https://markdownregistry.com/api/v1/resolve?ref=ai-analyst-lab/ai-analyst/srm-check GET https://markdownregistry.com/api/v1/blob/8cc05c00dec437dde61ae95da302d99d523bd95abfc1f9b986a4d296c619c57f
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.