bug-report-reproduce SKILL.md skillA

bug-report-reproduce from yarlson/yarstack is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add yarlson/yarstack/bug-report-reproduce@git:20261017.2f2e03b

Pins git:20261017.2f2e03b in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
yarlson/yarstack
Path
plugins/yarstack/skills/bug-report-reproduce/SKILL.md
Versions recorded
2
Latest version
git:20261017.2f2e03b, committed Oct 17, 2026
First version recorded
Oct 9, 2026
Size
8,054 bytes
Repository stars
3
License
MIT

Reproduce a user, customer, or support-reported problem with synthetic data, prove the cause with a temporary test, record a narrated click-through walkthrough of the symptom, and report what was and was not proven. Use when the user links a bug report, support thread, or ticket and asks to reproduce it, find the cause, or show a recording or walkthrough video; not for read-only questions without a report, which belong to system-investigate, or for planned feature work.

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 Report Reproduction

Turn one reported problem into a reproduction, a proven cause, and visual evidence that a teammate can review. Leave the repository as it was unless the user asks for a fix.

## Workflow

### 1. Read the report

Read the report and its attachments through the available connector. If you cannot read the report, ask the user to paste it. Record:

- the symptom in the reporter's words and in observable terms;
- exact messages, errors, outputs, and screenshots;
- the affected area, environment, input shape, and plan already agreed in the report.

Do not write to the report's source. Draft any reply for the user to send.

Record `git status --short` before you change anything. Cleanup in step 8 restores this state.

### 2. Trace the symptom to the code

Start from the most specific observable detail in the report and follow the code that produces it, across process and service boundaries, to the decision that causes it. Record each step with `file:line`.

State the working hypothesis and the strongest alternative. Keep the observed symptom separate from its cause; the place where a problem shows is often not where it starts.

### 3. Build synthetic input
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add yarlson/yarstack/bug-report-reproduce@sha256:4463afdca66d2992

The line at the top of this page pins the label git:20261017.2f2e03b, 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_j4z6rpxkzr4d7h5q.svg)](https://markdownregistry.com/a/art_j4z6rpxkzr4d7h5q)

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

Versions

The registry has recorded 2 versions of this file, between Oct 9, 2026 and Oct 17, 2026, about one every 8 days.

versioncommittedcommitsizeaudit
git:20261017.2f2e03b latest2026-10-17 2f2e03b 8,054 BA view · diff
git:20261009.3dec1242026-10-09 3dec124 7,079 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 (8054 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

yarlson/yarstack · 3 stars · license MIT · pushed 2026-10-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_j4z6rpxkzr4d7h5q
GET https://markdownregistry.com/api/v1/resolve?ref=yarlson/yarstack/bug-report-reproduce
GET https://markdownregistry.com/api/v1/blob/4463afdca66d2992253516f46878995f436f86e3744d142a2c14dbb9296b58e2

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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