android-skills

A set of development guidance for Android and Kotlin Multiplatform apps. It covers app structure, Jetpack Compose user interfaces, asynchronous Kotlin code, networking, storage, testing, debugging, Gradle, and Material Design 3.

In plain words
What is it for?
Use it when building or changing Android or Kotlin Multiplatform apps, including screens, network requests, local data storage, pagination, dependency injection, tests, and Gradle configuration.
Why use it?
It helps an agent work with common Android technologies without needing each project’s patterns explained from scratch. This can reduce confusion when adding features, fixing bugs, or configuring builds.

Plugin for Claude Code

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add rcosteira79/android-skills
agentmods
npx agentmods add plugins/rcosteira79/android-skills/android-skills
Clone the repo
git clone --depth 1 https://github.com/rcosteira79/android-skills

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 21 skills cost 1,751 tokens a session between them.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

android-skills scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/android-skills/.claude-plugin/plugin.json · 29 lines

What it actually says

{
  "name": "android-skills",
  "description": "Android and KMP development skills for Claude Code — architecture, Compose, coroutines, flows, networking (Retrofit, Ktor), persistent storage (Room, DataStore), pagination, dependency injection (Hilt, Koin), testing, debugging, Gradle, and Material Design 3",
  "version": "5.6.0",
  "author": {
    "name": "Ricardo Costeira"
  },
  "homepage": "https://github.com/rcosteira79/android-skills",
  "repository": "https://github.com/rcosteira79/android-skills",
  "license": "MIT",
  "keywords": [
    "android",
    "kotlin",
    "kmp",
    "compose",
    "coroutines",
    "flows",
    "ktor",
    "room",
    "datastore",
    "paging",
    "koin",
    "hilt",
    "material3",
    "jetpack",
    "gradle"
  ]
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 29 lines scan A 6011b9cc9de0

Subscribe to this mod's changes

android-skills is a plugin published in the GitHub repository rcosteira79/android-skills (136 stars, last pushed 8d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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