yarlson/yarstack · plugins/yarstack/skills/test-design/SKILL.md

test-design skillA

test-design is agent-read markdown (skill) from yarlson/yarstack: Design or write reproducible tests matched to behavioral risk before implementation. Use for product behavior and for engineering tooling and infrastructure only when native checks are insufficient and concrete complexity or failure risk warrants proportionate dedicated tests..

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.

How to install

Latest version
mdr add yarlson/yarstack/test-design@git:20260911.e22616f
Exact content
mdr add yarlson/yarstack/test-design@sha256:1f935a658e42a2d4

Pin 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_tca34jfeahmf5n6o.svg)](https://markdownregistry.com/a/art_tca34jfeahmf5n6o)

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Versions

versioncommittedcommitsizeaudit
git:20260911.e22616f latest2026-09-11 e22616f 3,057 BA view · diff
git:20260724.07719722026-07-24 0771972 3,003 BA view · diff
git:20260724.540bbe92026-07-24 540bbe9 2,663 BA view · diff
git:20260720.2e4f3b42026-07-20 2e4f3b4 2,266 BA view · diff
git:20260718.188cd112026-07-18 188cd11 1,479 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (3057 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

GitHub

yarlson/yarstack · 3 stars · license MIT · pushed 2026-09-12 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_tca34jfeahmf5n6o
GET https://markdownregistry.com/api/v1/resolve?ref=yarlson/yarstack/test-design
GET https://markdownregistry.com/api/v1/blob/1f935a658e42a2d46e23a2b67c1fe30ea1e3d9cf0d9c371b16ffb8921e6ffa16