diagnose SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
diagnose from pitimon/8-habit-ai-dev is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add pitimon/8-habit-ai-dev/diagnose@git:20261003.c80149bPins git:20261003.c80149b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- pitimon/8-habit-ai-dev
- Path
skills/diagnose/SKILL.md- Versions recorded
- 7
- Latest version
- git:20261003.c80149b, committed Oct 3, 2026
- First version recorded
- Jun 8, 2026
- Size
- 11,975 bytes
- Repository stars
- 3
- License
- MIT
Active bug investigation discipline — 6-phase methodology covering feedback-loop, reproduce, hypothesise, instrument, fix-with-regression-test, and cleanup-with-post-mortem. Use when investigating a hard bug or performance regression that doesn't have an obvious root cause. Triggers: "diagnose", "debug this", "investigate this bug", "reproduce the failure", "why is X failing". Read-only guidance — guides the human through systematic investigation rather than auto-fixing. Refuses to skip Phase…
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
# `/diagnose` — Active Bug Investigation (6 Phases) **Habits**: H1 (Be Proactive — prevent recurrence, not just patch the symptom) + H5 (Seek First to Understand — reproduce before fix) ## When to Use - A bug is reported and the root cause is **not** obvious - A performance regression appeared; you need to localize what changed - Tests passed locally but failed in CI, or vice versa - A feature works for some inputs and fails for others — you need to find the boundary - A previous fix didn't hold; the bug returned in a different form This skill enforces the discipline **build a fast feedback loop before you guess**. Documented friction: a lesson in `~/.claude/lessons/2026-04-12-compression-worker-420-investigation.md` notes that a 30-minute log-analysis session could have been a 5-minute SQL-comparison session if Phase 1 had been done first. ## When to Skip - Single-line bug with obvious root cause (typo, wrong constant, off-by-one in plain sight) - Lint/format errors with a clear fix - Rename refactors and dependency bumps with passing CI - Stack trace points to a single line that you can read and immediately understand …
Read the whole file at its exact version.
How to install
mdr add pitimon/8-habit-ai-dev/diagnose@sha256:077ce26d752c2042The line at the top of this page pins the label git:20261003.c80149b, 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_udqqzus7ljbvtpc7)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 7 versions of this file, between Jun 8, 2026 and Oct 3, 2026, about one every 19 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261003.c80149b latest | 2026-10-03 | c80149b | 11,975 B | A | view · diff |
| git:20260914.5d5e0e3 | 2026-09-14 | 5d5e0e3 | 11,704 B | A | view · diff |
| git:20260912.910e521 | 2026-09-12 | 910e521 | 11,622 B | A | view · diff |
| git:20260912.258a0e9 | 2026-09-12 | 258a0e9 | 11,458 B | A | view · diff |
| git:20260712.823b1c7 | 2026-07-12 | 823b1c7 | 11,412 B | A | view · diff |
| git:20260610.447f3ed | 2026-06-10 | 447f3ed | 11,368 B | A | view · diff |
| git:20260608.eea5764 | 2026-06-08 | eea5764 | 11,545 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 (11975 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
pitimon/8-habit-ai-dev · 3 stars · license MIT · pushed 2026-10-13 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_udqqzus7ljbvtpc7 GET https://markdownregistry.com/api/v1/resolve?ref=pitimon/8-habit-ai-dev/diagnose GET https://markdownregistry.com/api/v1/blob/077ce26d752c2042b02992ec7ca655bd00cb8708dd1bf59a9cdd1045db26ba33
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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