diagnosis-evidence SKILL.md skillA

diagnosis-evidence from kamiazya/whiteboard is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add kamiazya/whiteboard/diagnosis-evidence@git:20261015.4ac2e19

Pins git:20261015.4ac2e19 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
kamiazya/whiteboard
Path
.claude/skills/diagnosis-evidence/SKILL.md
Versions recorded
8
Latest version
git:20261015.4ac2e19, committed Oct 15, 2026
First version recorded
Aug 16, 2026
Size
11,836 bytes
Repository stars
10
License
Apache-2.0

Make a diagnosis prove it measured what it claims — before reporting a cause, a "not a regression", a mutation check, or a passing verification. Use when debugging a failing test, a CI failure, a flake, or verifying a fix by hand.

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

# A diagnosis is only as good as the proof that you measured what you think

`measured-change` is about instrumenting a CHANGE whose effect you cannot see.
This is about the step before: a FAILURE you are explaining, or a fix you are
calling verified. Both fail the same way — a number arrives, it looks like
evidence, and nothing in it says what was actually exercised.

Every rule below cost a wrong public conclusion in one session.

## Pick an observation that could REFUTE the claim

The rule the others are instances of. Three wrong conclusions in one session
shared this shape: the observation taken was CONSISTENT with the claim and
could not have contradicted it, so it read as confirmation while testing
nothing.

- A mutant reported `failed 1 test` and was read as killed. The failing test
  was a flake, in a file the mutated line cannot reach; three full runs of the
  mutated build all passed. One failure is equally consistent with killed and
  with a flake — only WHICH test failed tells them apart.
- A survivor at `elements[0]?.attrs?.[name]` was hand-checked by mutating both
  optional chains. It went red, and the reported mutant was only one of them.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add kamiazya/whiteboard/diagnosis-evidence@sha256:3eea8a29a29b9802

The line at the top of this page pins the label git:20261015.4ac2e19, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_yes45uck5acysej3.svg)](https://markdownregistry.com/a/art_yes45uck5acysej3)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 8 versions of this file, between Aug 16, 2026 and Oct 15, 2026, about one every 9 days.

versioncommittedcommitsizeaudit
git:20261015.4ac2e19 latest2026-10-15 4ac2e19 11,836 BA view · diff
git:20261015.69103cd2026-10-15 69103cd 11,580 BA view · diff
git:20261015.cf7a9f92026-10-15 cf7a9f9 11,435 BA view · diff
git:20261003.a71f44f2026-10-03 a71f44f 10,714 BA view · diff
git:20260921.c38b5412026-09-21 c38b541 10,502 BA view · diff
git:20260831.7d13b8f2026-08-31 7d13b8f 8,897 BA view · diff
git:20260830.65e6c5d2026-08-30 65e6c5d 7,033 BA view · diff
git:20260816.46b89392026-08-16 46b8939 5,274 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the 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 (11836 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

kamiazya/whiteboard · 10 stars · license Apache-2.0 · pushed 2026-10-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_yes45uck5acysej3
GET https://markdownregistry.com/api/v1/resolve?ref=kamiazya/whiteboard/diagnosis-evidence
GET https://markdownregistry.com/api/v1/blob/3eea8a29a29b980274d4d5341f5bbe4f07328c11894eff586c2ed5de0c63dfe3

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.

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