bug-diagnosis SKILL.md skillA
bug-diagnosis from borghei/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add borghei/claude-skills/bug-diagnosis@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- borghei/claude-skills
- Path
engineering/bug-diagnosis/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Nov 8, 2026
- Size
- 14,592 bytes
- Repository stars
- 1,075
- License
- a license file GitHub does not identify
Find the root cause of hard bugs with a fast pass/fail repro, ranked falsifiable hypotheses and bisection. Use when a bug resists quick fixes, a failure is intermittent, or a regression needs tracing to its cause.
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
# Bug Diagnosis A disciplined loop for bugs that survived the first obvious fix. The order is fixed: build a signal that says "bug present / bug absent" in seconds, write down competing explanations with predictions that could prove them wrong, test the cheapest likely one, narrow the search space by halving, and lock the cause in with a regression test that was seen failing. Most wasted debugging time comes from skipping the first step and reading code to build a theory with nothing to check it against. ## When to use this skill - **A bug resisted a first fix** — the patch went in and the symptom came back, or moved - **The failure is intermittent** — passes locally, fails in CI one run in five - **A regression appeared between two releases** and nobody knows which change caused it - **The symptom is far from the cause** — wrong totals, corrupted records, a hang with no error - **A performance regression** needs a measured cause rather than a guess - **Logs or traces need sharing** with a teammate, vendor or assistant and may contain credentials ## Inputs the skill expects - The reported symptom in exact terms: error text, wrong value, measured latency …
Read the whole file at its exact version.
How to install
mdr add borghei/claude-skills/bug-diagnosis@sha256:942258a16ecaa775The line at the top of this page pins the label v1.0.0, 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_6mklqj6ughg3gjxv)
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Versions
The registry has recorded 1 version of this file, committed on Nov 8, 2026.
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 (14592 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
borghei/claude-skills · 1,075 stars · license a license file GitHub does not identify · pushed 2026-11-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6mklqj6ughg3gjxv GET https://markdownregistry.com/api/v1/resolve?ref=borghei/claude-skills/bug-diagnosis GET https://markdownregistry.com/api/v1/blob/942258a16ecaa775a1e8561d7eebcf1cc0b64169f8788e41e642ed482feb0ee1
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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