bugfix SKILL.md skillA

bugfix from duthaho/skillhub is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add duthaho/skillhub/bugfix@git:20260811.fdc967e

Pins git:20260811.fdc967e in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
duthaho/skillhub
Path
.claude/skills/bugfix/SKILL.md
Versions recorded
5
Latest version
git:20260811.fdc967e, committed Aug 11, 2026
First version recorded
Jul 5, 2026
Size
7,845 bytes
Repository stars
9
License
MIT

Lightweight bug-fixing loop — reproduce → root-cause → fix test-first → verify — deliberately separate from the heavyweight feature workflow so small fixes don't drag a spec-and-plan process behind them. Demands a deterministic reproduction before any code changes, a stated root-cause hypothesis confirmed with evidence (never a shotgun fix), a failing test that captures the bug, and the original repro re-run as proof. Keeps a one-line-per-bug log in out/dev/bugfix-log.md and checks it first…

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

# bugfix — reproduce, root-cause, fix, prove

`/bugfix <symptom / error / failing thing>`

Answer one question: **why does this actually happen, and what's the minimal
fix that provably removes it?** The order is non-negotiable — reproduce
before diagnosing, diagnose before fixing, prove after fixing. A fix without
a confirmed root cause is a guess wearing a commit message.

## Step 0 — Check the log

Read `out/dev/bugfix-log.md` if it exists. A similar symptom fixed before is
the best diagnostic head start there is — past root causes cluster ("we've
had three timezone bugs in this module"). Mention any match. Also skim recent
`git log` — a bug that appeared recently usually shipped recently.

## Step 1 — Reproduce (before touching any code)

Turn the report into a **deterministic reproduction**: a command, a failing
test invocation, a curl, a click path, a `git bisect run` harness —
something that fails on demand and will pass when the bug is dead.

- **The gate is checkable:** a command you have **already run at least
  once**, with the invocation and its output pasted. That output is the
  baseline the fix is judged against — a repro described but never run
  doesn't count.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add duthaho/skillhub/bugfix@sha256:208898bb19cd99c1

The line at the top of this page pins the label git:20260811.fdc967e, 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_3pmwbqblwtga5yik.svg)](https://markdownregistry.com/a/art_3pmwbqblwtga5yik)

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

Versions

The registry has recorded 5 versions of this file, between Jul 5, 2026 and Aug 11, 2026, about one every 9 days.

versioncommittedcommitsizeaudit
git:20260811.fdc967e latest2026-08-11 fdc967e 7,845 BA view · diff
git:20260719.d2627cb2026-07-19 d2627cb 7,384 BA view · diff
git:20260714.ad3b1b52026-07-14 ad3b1b5 6,974 BA view · diff
git:20260710.47b8db62026-07-10 47b8db6 5,751 BA view · diff
git:20260705.75f7b132026-07-05 75f7b13 5,587 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 (7845 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

duthaho/skillhub · 9 stars · license MIT · pushed 2026-10-31 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_3pmwbqblwtga5yik
GET https://markdownregistry.com/api/v1/resolve?ref=duthaho/skillhub/bugfix
GET https://markdownregistry.com/api/v1/blob/208898bb19cd99c1713a035c6b3e2875c3c3605b509eb7688da9763e5abaa6fe

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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