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.
npx skills add mouchegmouradian/claude-code-skills --skill android-app-buildergit clone --depth 1 https://github.com/mouchegmouradian/claude-code-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mouchegmouradian/claude-code-skills/android-app-builder)<a href="https://agentmods.dev/skills/mouchegmouradian/claude-code-skills/android-app-builder"><img src="https://agentmods.dev/badge/skills/mouchegmouradian/claude-code-skills/android-app-builder/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mouchegmouradian/claude-code-skills/android-app-builder"><img src="https://agentmods.dev/badge/skills/mouchegmouradian/claude-code-skills/android-app-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00092 | $0.05156 |
| Opus 5.5 | $0.00037 | $0.02062 |
| Sonnet 5.5 | $0.00018 | $0.01031 |
| Haiku 4.5 | $0.00009 | $0.00516 |
Grade A, and why
android-app-builder 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 2mo 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.
How it starts
The opening of the file, as written. The whole thing — 613 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Android Development
Build Android applications following Google's official architecture guidance, as demonstrated in the NowInAndroid reference app.
Quick Reference
| Task | Reference File |
|---|---|
| Complexity tier selection | complexity-tiers.md |
| Project structure & modules | modularization.md |
| Architecture layers (UI, Domain, Data) | architecture.md |
| Jetpack Compose patterns | compose-patterns.md |
| Coroutines & Flow patterns | coroutines.md |
| Gradle & build configuration | gradle-setup.md |
| Testing approach | testing.md |
Step 0: Detect Complexity Tier
Before writing any code, classify the project into one of three tiers. This determines every architectural decision that follows.
Detection Heuristics
Apply these signals in order. The first confident match wins.
Tier 1 — Simple (default for ambiguous small projects):
- Described as: demo, prototype, personal app, learning project, side project, sample, or proof-of-concept
- 1–3 distinct user-facing features
- Features are independent — no described need to share data across screens
- No described need for background processing or scheduled work
- No mention of teams, multi-developer workflow, or production deployment
- Examples: tip calculator, flashcard app, habit tracker, weather viewer, unit converter
Tier 2 — Standard:
- 3–6 distinct user-facing features
- Some features share a repository or data model (e.g., "profile data shown on both home and settings")
- Described as a "real app" or "production" but built by a small team (1–3 developers)
- Needs Hilt for testability or future scaling, but no current need for module isolation
- Examples: personal finance tracker, recipe app with favorites/search/detail, fitness app with history and goals
What ships with it
12 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- assets/templates/libs.versions.toml.template 7.6 KB
- assets/templates/settings.gradle.kts.template 1.2 KB
- LICENSE 1.0 KB
- README.md 8.1 KB
- references/architecture.md 10 KB
- references/complexity-tiers.md 16 KB
- references/compose-patterns.md 12 KB
- references/coroutines.md 12 KB
- references/gradle-setup.md 17 KB
- references/modularization.md 7.7 KB
- references/testing.md 13 KB
- scripts/generate_feature.py 11 KB runs code
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.
- 2mo ago First seen · 613 lines · 92 tokens per session scan A fc8c631b8c3f
android-app-builder is a skill published in the GitHub repository mouchegmouradian/claude-code-skills (2 stars, last pushed 1mo ago), licensed MIT. It adds 92 tokens to every session and 5,156 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-08-31.
Other skills, from other repositories
kotlin-specialist
Provides idiomatic Kotlin implementation patterns including coroutine concurrency, Flow stream handling, multiplatform architecture, Compose UI construction, Ktor server setup, and type-safe DSL design. Use when building Kotlin applications requiring coroutines, multiplatform development, or Android with Compose.…
swift-expert
Builds iOS/macOS/watchOS/tvOS applications, implements SwiftUI views and state management, designs protocol-oriented architectures, handles async/await concurrency, implements actors for thread safety, and debugs Swift-specific issues. Use when building iOS/macOS applications with Swift 5.9+, SwiftUI, or async/await…
android-development
Android development guidelines for Kotlin with clean architecture, MVI pattern, Material Design, and best practices for building robust mobile applications.
compose-multiplatform
Compose Multiplatform / KMP patterns - expect/actual composables, platform-specific code, density and font handling cross-target, iOS/Android/Desktop interop.
swift-dev
Native iOS and macOS apps in Swift 6 - SwiftUI, AppKit, SwiftData, concurrency, Swift Testing, XcodeGen, CallKit and audio, App Intents, devices, TestFlight, code signing, notarization. Use for any iPhone or Mac app, helper or CLI work.
swift-macos
Build native macOS apps with Swift 6.3 (latest: 6.3.3, bundled in Xcode 26.6, Jun 2026), SwiftUI, SwiftData, and macOS 26 Tahoe (26.6.2 current). Target macOS 14+ for SwiftData/@Observable, macOS 15+ for latest SwiftUI, macOS 26 for Liquid Glass and Foundation Models. Note Xcode 26.6 still bundles the macOS 26.5 SDK…