brownfield-onboarding SKILL.md skillA

brownfield-onboarding from vmobifystudio/app-dev-team is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add vmobifystudio/app-dev-team/brownfield-onboarding@git:20260729.d5165d9

Pins git:20260729.d5165d9 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
vmobifystudio/app-dev-team
Path
skills/brownfield-onboarding/SKILL.md
Versions recorded
2
Latest version
git:20260729.d5165d9, committed Jul 29, 2026
First version recorded
Jun 1, 2026
Size
4,855 bytes
Repository stars
5
License
MIT

Use when pointing the team at an EXISTING, already-built app instead of a blank project — detects the stack, reverse-engineers the as-built architecture, and classifies remediation work as safe-to-auto-fix vs risky-needs-approval. Triggered by /app-onboard, /app-audit, and by /app-run when it detects a non-empty app directory.

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

# Brownfield onboarding

Greenfield commands generate vision → PRD → architecture → code. For an app that already exists,
you go the other way: **read the code, snapshot what's there, grade it against the House KB, and
plan the gap.** This skill is the procedure for the "read and understand" half.

## When to use

- `/app-onboard` (adopt an existing codebase) and `/app-audit` (grade it) both start here.
- `/app-run` invokes this when the target directory already contains an app (see Detection).

## Step 1 — Detect the app

Scan the target directory (not deeper than ~3 levels) to establish ground truth before any agent reasons about it:

- **iOS:** `*.xcodeproj` / `*.xcworkspace` / `Package.swift`; read `project.yml` (XcodeGen),
  `*.xcconfig`, `Info.plist`, `Package.resolved`. Note Swift version, min iOS target, SwiftUI vs UIKit.
- **Android:** `settings.gradle*`, `app/build.gradle(.kts)`, `gradle/libs.versions.toml`. Note Kotlin/AGP,
  `compileSdk`/`minSdk`/`targetSdk`, Compose vs XML, the module list.
- **Both / signals:** existing `CLAUDE.md`, `README`, `docs/`, CI under `.github/workflows`,
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add vmobifystudio/app-dev-team/brownfield-onboarding@sha256:178c20f085e7879a

The line at the top of this page pins the label git:20260729.d5165d9, 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_nnen54bpn7mjnl5n.svg)](https://markdownregistry.com/a/art_nnen54bpn7mjnl5n)

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

Versions

The registry has recorded 2 versions of this file, between Jun 1, 2026 and Jul 29, 2026, about one every 58 days.

versioncommittedcommitsizeaudit
git:20260729.d5165d9 latest2026-07-29 d5165d9 4,855 BA view · diff
git:20260601.6191cd62026-06-01 6191cd6 4,366 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 (4855 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 · 5 stars · license MIT · pushed 2026-11-02 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_nnen54bpn7mjnl5n
GET https://markdownregistry.com/api/v1/resolve?ref=vmobifystudio/app-dev-team/brownfield-onboarding
GET https://markdownregistry.com/api/v1/blob/178c20f085e7879a260d754d0b2d9b1a7c884fb31f04a77554bba957ef81e78b

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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