Home / vmobifystudio / app-dev-team · skills/defect-hunting/SKILL.md · GitHub

defect-hunting skillA

defect-hunting is agent-read markdown (skill) from vmobifystudio/app-dev-team: Use when reviewing code, auditing an app, writing a guard rule or test, or certifying any threshold/constant/formula. Finds the defects a diff review structurally cannot see — the second write path, the mis-calibrated constant, the rule that cannot fail. Triggers from code-reviewer, /app-audit, qa-engineer, verification-engineer, and any task that adds a lint rule, architecture test, or CI grep..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

What the file says

# Defect hunting

Mined from a real remediation programme where twelve screen-by-screen review rounds found nothing
new, and one round organised differently found dozens of live defects. Every one of these rules is
paid for.

**The sentence that generates all four:**

> Verify the thing that has to be true, not the thing you changed.

Filtering the list is not filtering the parser. Capping the severity is not capping its renderer.
Matching the token is not matching the value. Mutating the file is not confirming the mutation
landed.

---

## 1. Audit the data's entry points, not the screens

A review organised by screen structurally cannot find these, because in every case **the audited
surface was correct and the bug was in the second path to the same data** — usually another file,
often another module:

| What was reviewed | Where the defect actually was |
|---|---|
| Add-form validation | the **edit** path, which validated nothing |
| the dashboard alert banner | the **detail screen** the banner opens — they disagreed |
| the growth-target reader | the **writer**, which destroyed data |
| the photo picker's success branch | its **cancel** branch, which wiped the existing photo |
…

Read the whole file at its exact version.

How to install

Latest version
mdr add vmobifystudio/app-dev-team/defect-hunting@git:20260810.958b327
Exact content
mdr add vmobifystudio/app-dev-team/defect-hunting@sha256:4cf94d0107e1a8fe

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_zgk46i2qgefron3o.svg)](https://markdownregistry.com/a/art_zgk46i2qgefron3o)

1 badge views in 30 days

Versions

versioncommittedcommitsizeaudit
git:20260810.958b327 latest2026-08-10 958b327 20,418 BA view · diff
git:20260810.62539d32026-08-10 62539d3 20,231 BA view · diff
git:20260804.a760e212026-08-04 a760e21 16,256 BA view · diff
git:20260729.9d767952026-07-29 9d76795 11,412 BA view · diff
git:20260729.198ad792026-07-29 198ad79 9,874 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, 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 (20418 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

vmobifystudio/app-dev-team · 4 stars · license MIT · pushed 2026-09-19 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_zgk46i2qgefron3o
GET https://markdownregistry.com/api/v1/resolve?ref=vmobifystudio/app-dev-team/defect-hunting
GET https://markdownregistry.com/api/v1/blob/4cf94d0107e1a8fef7f9d7ff60544e9994654a89028a07a9656384c354dd830d

Your agent 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.

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