A

Android Engineering Skills

lennon-petrick/android-engineering-skills · v1.1.0 · Development & Workflow

by Lennon PetrickOwner verifiedAwesome AI Plugins

Agent Skills for any skills-compatible coding agent (Claude Code, Codex, Gemini in Android Studio, and more) that teach how to structure, write, and test Android apps with Kotlin and Jetpack Compose

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Guard checks the skills and MCP servers a plugin adds on your machine and asks you before a risky action runs. The scores above are free, and no plan changes them.

Is Android Engineering Skills a fit?

From the plugin's manifest and HOL's scan. Anything the plugin does not declare is shown as not declared.

Works with

  • Codex
  • Claude Code
  • Antigravity CLI
  • 3 skills

Before you install

Sign-in
Not declared
Declared access
Read
License
MIT

Check before relying on it

What is Android Engineering Skills?

Android Engineering Skills is a published development & workflow plugin for AI coding agents that works with Codex, Claude Code and Antigravity CLI, developed by Lennon Petrick and distributed through the HOL AI plugin registry. Agent Skills for any skills-compatible coding agent (Claude Code, Codex, Gemini in Android Studio, and more) that teach how to structure, write, and test Android apps with Kotlin and Jetpack Compose.

Canonical slug
lennon-petrick/android-engineering-skills
Version
v1.1.0 · updated Nov 3, 2026

Registry snapshot

Owner verification
Verified on HOL as @lennonpetrick
Marketplace source
.claude-plugin/marketplace.json
Scanner
HOL plugin scanner
Security result
Partial scan
Digest verified
Yes
3 bundled skillsRead, copy or download each SKILL.mdOpen skills

Trust and security

Trust & reputation

On-Chain Verified
93

HOL Trust Score

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
100/100
Maintenance
65/100
MCP server setup
100/100
Plugin Security
98/100
Provenance
80/100
Publisher Quality
100/100

Provenance

Plugin root
.
Source repo
https://github.com/lennonpetrick/android-engineering-skills
Source commit
b1468d10b397…
Publisher verified
Yes
Owner verified
@lennonpetrick
Agent Plugins 1.0
Not detected

Continuous scanner CI detected

No action is required. This plugin receives the full trust score.

README badge not detected

Plugin owners can add the HOL badge to the repository README from Guard Plugins. Distribution, not security evidence. It adds a 2% engagement adjustment to the overall trust score and never changes the security result.

Partial scan
Security result
98
Score from finished checks
0
High findings

Some checks did not finish: Cisco skill scan. No blocking issue was found in the checks that did finish, but this is not a passed scan.

Provider
codex-plugin-scanner
Grade
A · Excellent
Version
3.24.2
codex:hol-plugin-scanner-Lqc2In / cisco-skill-scanner: failedcodex:hol-plugin-scanner-Lqc2In / cisco-mcp-scanner: skipped

[claude:.] Claude Plugin

18/18

5 checks

[claude:.] Security

16/16

6 checks

[claude:.] Operational Security

17/17

5 checks

[claude:.] Code Quality

10/10

2 checks

[codex:.] Manifest Validation

31/31

9 checks

[codex:.] Security

16/16

9 checks

[codex:.] Operational Security

17/17

5 checks

[codex:.] Best Practices

12/15

5 checks

[codex:.] Marketplace

15/15

3 checks

[codex:.] Skill Security

5/5

4 checks

[codex:.] Code Quality

10/10

2 checks

Published advisories

None matched in GitHub security advisories, checked . This covers published advisories only, not problems nobody has reported.

GitHub security advisories are those the source repository has published.

Findings

infobest-practicesCODEXIGNORE_MISSING

A .codexignore file helps prevent accidental inclusion of local artifacts and secrets.

Add a .codexignore file with generated assets, local state, and secret paths.

Install guidance

Install in Claude Code

Install through the Claude Code plugin marketplace.

Claude Code plugin docs

Optional: install HOL Guard for Claude Code first, so it can check this plugin's tools on your machine before Claude Code uses them.

  1. 1

    Add the marketplace

    Run this inside a Claude Code session. It registers the marketplace manifest shipped at the repository root. If the repository ships none, add the generated entry from the Advanced section below first.

    claude code
  2. 2

    Install the plugin

    Installs the android-engineering-skills entry from the android-engineering-skills marketplace.

    claude code
  3. 3

    Scripted alternative

    Non-interactive equivalent for scripts and CI pipelines. Add --scope project to pin the install to one repository.

    shell
  4. 4

    Check it is installed

    Lists installed plugins. The entry should appear as enabled.

    shell

To remove it later, run claude plugin uninstall android-engineering-skills@android-engineering-skills.

Did setup work in Claude Code?

No setup reports for Claude Code yet. Self-reported by signed-in visitors. Copying a command is not counted, and most installs are never reported.

Attested installs: Fewer than 10 attested installs of this plugin in week 2026-W44, so no number is shown. Counted from opt-in HOL Guard install reports, once per machine and runtime, and never mixed with the answers above. How install reports work.

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Plugin manifest

{
  "name": "android-engineering-skills",
  "version": "1.1.0",
  "description": "Agent Skills that teach AI coding agents how to structure, write and test Android apps with Kotlin and Jetpack Compose.",
  "author": {
    "name": "Lennon Petrick",
    "url": "https://github.com/lennonpetrick"
  },
  "homepage": "https://github.com/lennonpetrick/android-engineering-skills",
  "repository": "https://github.com/lennonpetrick/android-engineering-skills",
  "license": "MIT",
  "keywords": [
    "android",
    "kotlin",
    "jetpack-compose",
    "architecture",
    "testing",
    "agent-skills"
  ],
  "skills": "./",
  "interface": {
    "displayName": "Android Engineering Skills",
    "developerName": "Lennon Petrick",
    "shortDescription": "Skills that make AI agents write Android code like a senior engineer",
    "longDescription": "Three skills that teach your agent how to structure an Android project, how to build features with unidirectional data flow, ViewModels and Compose, and how to write tests with JUnit 5 and Turbine. Each skill loads only when a task calls for it. Works alongside Google's official Android skills.",
    "category": "Development & Workflow",
    "capabilities": [
      "Read"
    ],
    "websiteURL": "https://github.com/lennonpetrick/android-engineering-skills",
    "privacyPolicyURL": "https://github.com/lennonpetrick/android-engineering-skills/blob/main/PRIVACY.md",
    "termsOfServiceURL": "https://github.com/lennonpetrick/android-engineering-skills/blob/main/TERMS.md",
    "brandColor": "#15243B",
    "composerIcon": "./assets/icon.png",
    "logo": "./assets/logo.png",
    "screenshots": [
      "./assets/screenshots/01-hero.png",
      "./assets/screenshots/02-problem.png",
      "./assets/screenshots/03-with-skills.png",
      "./assets/screenshots/04-three-skills.png",
      "./assets/screenshots/05-architecture.png",
      "./assets/screenshots/06-testing.png",
      "./assets/screenshots/07-setup.png",
      "./assets/screenshots/08-open-source.png"
    ]
  },
  "holManifestOrigin": "repository",
  "registryIndexVersion": 9
}

Marketplace source

Repo URL
https://github.com/lennonpetrick/android-engineering-skills
Marketplace path
.claude-plugin/marketplace.json
Source path
.
Install policy
Unspecified

Skills

3 SKILL.md files ship with this plugin. Preview, copy, or download each one, then install them with the Skills CLI.

Share
skills-cli
  • android-architecture

    android-architecture/SKILL.md

    Defines project structure, package layout, layer boundaries, naming conventions, and dependency injection setup for Android projects. Use this skill whenever creating a new Android project, adding a new feature module, scaffolding a new screen or flow, setting up DI bindings, naming any class or file, or deciding which layer a piece of code belongs in. Also use it when reviewing or refactoring existing code to ensure it follows the established architecture.

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • android-patterns

    android-patterns/SKILL.md

    Defines all implementation patterns for Android features: Unidirectional Data Flow (UDF), ViewModel design, Flow composition, error handling, repository pattern, domain UseCases, and Compose UI patterns. Use this skill whenever implementing a ViewModel, designing state or action models, writing a repository or UseCase, composing Flows, handling errors, building Compose screens or components, or reviewing code for correctness of reactive patterns or state management.

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

  • android-testing

    android-testing/SKILL.md

    Defines testing standards for Android projects, including JUnit 5, Turbine, Mockito or MockK, descriptive backtick test names, parameterized tests, and flow testing patterns. Use this skill when creating, reviewing, or refactoring unit tests for ViewModels, use cases, mappers, calculators, repositories, or other pure Kotlin Android components.

    SKILL.md content is not in this snapshot. Open the raw file to copy it from the source repository.

File inventory

.agents/plugins/marketplace.json

file

403 bytes

e6338901612db6e1…

.claude-plugin/marketplace.json

file

692 bytes

a9568b042eb98500…

.claude-plugin/plugin.json

file

991 bytes

8462ba52b383b064…

.codex-plugin/plugin.json

plugin-manifest

1,845 bytes

98ace80941ab9be7…

.github/dependabot.yml

file

114 bytes

e0f89c3d5b2bc229…

.github/workflows/plugin-security-scan.yml

file

498 bytes

cc6c91b2fa4ad9e2…

android-architecture/SKILL.md

skill

7,713 bytes

50e396755b356842…

android-patterns/SKILL.md

skill

9,554 bytes

0999e49bff3bc823…

android-testing/SKILL.md

skill

7,219 bytes

b67c31a24bc67b92…

assets/icon.png

asset

14,076 bytes

f64cf90ca4b1a69d…

assets/logo.png

asset

14,076 bytes

f64cf90ca4b1a69d…

assets/screenshots/01-hero.png

asset

263,924 bytes

aebd623b51a09b2c…

assets/screenshots/02-problem.png

asset

281,888 bytes

0263f1f6dfbf8a63…

assets/screenshots/03-with-skills.png

asset

291,484 bytes

e6238520dd79b814…

assets/screenshots/04-three-skills.png

asset

292,880 bytes

13e8e5febc7d4276…

assets/screenshots/05-architecture.png

asset

240,612 bytes

3aebc153f88c63ab…

assets/screenshots/06-testing.png

asset

222,604 bytes

08399d2ad0390122…

assets/screenshots/07-setup.png

asset

170,996 bytes

42f4b2bd0c8c0979…

assets/screenshots/08-open-source.png

asset

157,236 bytes

01edc58bd736bf9a…

CHANGELOG.md

file

1,286 bytes

2e156174763bc0ef…

CONTRIBUTING.md

file

1,099 bytes

56e174a3d53ccbd4…

LICENSE

file

1,436 bytes

1d349f33fa952dad…

PRIVACY.md

file

568 bytes

911bf32ae167bc91…

README.md

file

8,570 bytes

21d6b48cb576f7fc…

SECURITY.md

file

1,033 bytes

59364d035990c1f9…

TERMS.md

file

426 bytes

65a48b8126ca8a29…

Android Engineering Skills — Frequently asked questions

What is Android Engineering Skills?
Android Engineering Skills is an AI plugin in the HOL registry. Agent Skills for any skills-compatible coding agent (Claude Code, Codex, Gemini in Android Studio, and more) that teach how to structure, write, and test Android apps with Kotlin and Jetpack Compose.
How do I install Android Engineering Skills?
Install Android Engineering Skills in your harness: Codex — codex plugin marketplace add lennonpetrick/android-engineering-skills; Claude Code — /plugin marketplace add lennonpetrick/android-engineering-skills. Full step-by-step guidance is on the HOL plugin page.
How do I install Android Engineering Skills in HOL Guard?
To install Android Engineering Skills in HOL Guard, start with hol-guard plugin install lennon-petrick/android-engineering-skills --apply. The complete step-by-step install guide for HOL Guard is on the HOL plugin page.
How do I install Android Engineering Skills in Codex?
To install Android Engineering Skills in Codex, start with codex plugin marketplace add lennonpetrick/android-engineering-skills. The complete step-by-step install guide for Codex is on the HOL plugin page.
How do I install Android Engineering Skills in Claude Code?
To install Android Engineering Skills in Claude Code, start with /plugin marketplace add lennonpetrick/android-engineering-skills. The complete step-by-step install guide for Claude Code is on the HOL plugin page.
How is the Trust Score for Android Engineering Skills computed?
Android Engineering Skills has a HOL Trust Score of 93 out of 100. The score is a weighted sum of six components from a static scan of the source, capped for high-severity findings and adjusted by two disclosed policies. Memberships and payments are not inputs, and a scan is not a safety guarantee. Full breakdown: https://hol.org/registry/plugins/lennon-petrick%2Fandroid-engineering-skills/trust
Who publishes Android Engineering Skills?
Android Engineering Skills is published by Lennon Petrick and listed on HOL.

Directory acceptance

Listed in 0 of 5 directory lists

Read from the list each directory publishes on GitHub. Being listed means the directory accepted the plugin; it is not a HOL security rating.

Lists last read . HOL re-reads them every day.

Submitting it? Check it against each directory's rules

Install signal

HOL cannot see every install. These are separate signals from different sources, so they are not added together. Counts under each floor show as <N.

Install commands issued here
<5
HOL Guard install commands issued from this listing, last 28 days.
Opt-in install reports
<10
Machines that reported installing it through HOL Guard in week 2026-W44. Reporting is opt-in, so most installs are not counted.
HOL Guard workspaces
<5
Workspaces that approved it or include it in an approved-plugin feed, as of today.

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