diagnose-bug SKILL.md skillA
diagnose-bug from flurdy/agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add flurdy/agent-skills/diagnose-bug@v1.1.2Pins v1.1.2 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- flurdy/agent-skills
- Path
skills/diagnose-bug/SKILL.md- Versions recorded
- 5
- Latest version
- v1.1.2, committed Sep 7, 2026
- First version recorded
- Jul 18, 2026
- Size
- 12,847 bytes
- Repository stars
- 9
- License
- MIT
Evidence-led, read-only bug diagnosis using minimal reproduction, boundary isolation, ranked hypotheses, and explicit falsification tests before any fix is proposed.
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 Bug Find what causes an observed failure before proposing implementation. Work from evidence: ```text reproduce → isolate → hypothesize → falsify → conclude ``` Diagnosis is read-only. It may run safe tests and inspect code, logs, configuration shape, and tracker context, but it does not edit code, tests, configuration, or trackers. ## When to use Use `/diagnose-bug` when: - the symptom is reproducible but the cause is unknown; - a regression crosses modules, services, environments, or asynchronous boundaries; - the failure is intermittent, input-specific, timing-sensitive, or production-only; - several plausible explanations exist and speculative fixes would be risky; - the user asks for root-cause analysis, investigation, isolation, or diagnosis. Usually skip it when: - a deterministic failing test and direct source trace already establish the cause; - the root cause is known and the request is purely to implement the fix; - the work is a feature, refactor, architecture plan, or post-fix verification; - the only question is whether an existing implementation satisfies requirements—use `/verify-task` instead. ## Usage ```text …
Read the whole file at its exact version.
How to install
mdr add flurdy/agent-skills/diagnose-bug@sha256:0ca5793be7646ea1The line at the top of this page pins the label v1.1.2, 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_43q3sc5myovmoeap)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jul 18, 2026 and Sep 7, 2026, about one every 13 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.1.2 latest | 2026-09-07 | 23d6b60 | 12,847 B | A | view · diff |
| v1.1.1 | 2026-09-04 | 801a002 | 12,834 B | A | view · diff |
| v1.1.0 | 2026-09-04 | ea0f1cd | 12,834 B | A | view · diff |
| v1.1.0 | 2026-07-21 | a359765 | 12,508 B | A | view · diff |
| v1.0.0 | 2026-07-18 | 38882a2 | 12,492 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 (12847 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
flurdy/agent-skills · 9 stars · license MIT · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_43q3sc5myovmoeap GET https://markdownregistry.com/api/v1/resolve?ref=flurdy/agent-skills/diagnose-bug GET https://markdownregistry.com/api/v1/blob/0ca5793be7646ea15069993ebdb4cf8d1b1864d8563a9bf92e5e70b9a7a5a822
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.