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compose-multiplatform-best-practices

compose-multiplatform-best-practices is a skill for Claude Code from noloman/Android-AI-skills. It costs 19 tokens per session (439 once invoked), scanned A, original, MIT.

A set of rules for Compose Multiplatform, a Kotlin toolkit for building user interfaces that share code across Android, iOS, desktop, and other platforms.

In plain words
What is it for?
Use it when reviewing or building shared composables, managing shared UI state, handling platform-specific widgets, and configuring Compose Multiplatform resources and navigation.
Why use it?
It helps prevent Android-only code and incorrect state or navigation patterns from leaking into shared interface code.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

not rated 6repo 6mo ago A scan 19 tokens original MIT

Good fit Use it when reviewing or building shared composables, managing shared UI state, handling platform-specific widgets, and configuring Compose Multiplatform resources and navigation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/noloman/android-ai-skills/compose-multiplatform-best-practices
View source ↗ noloman/Android-AI-skills
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.

Any agent
npx skills add noloman/Android-AI-skills --skill compose-multiplatform-best-practices
Clone the repo
git clone --depth 1 https://github.com/noloman/Android-AI-skills

Made for: Claude Code.

Wrote 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.

agentmods badge for compose-multiplatform-best-practices

README.md
[![agentmods](https://agentmods.dev/badge/skills/noloman/android-ai-skills/compose-multiplatform-best-practices/github.svg)](https://agentmods.dev/skills/noloman/android-ai-skills/compose-multiplatform-best-practices)
Your own site
<a href="https://agentmods.dev/skills/noloman/android-ai-skills/compose-multiplatform-best-practices"><img src="https://agentmods.dev/badge/skills/noloman/android-ai-skills/compose-multiplatform-best-practices/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.

agentmods 80×15 button for compose-multiplatform-best-practices

Your own site · 80×15
<a href="https://agentmods.dev/skills/noloman/android-ai-skills/compose-multiplatform-best-practices"><img src="https://agentmods.dev/badge/skills/noloman/android-ai-skills/compose-multiplatform-best-practices.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 439 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00019 $0.00439
Opus 5 $0.00010 $0.00219
Sonnet 5 $0.00004 $0.00088
Haiku 4.5 $0.00002 $0.00044

Measured 9d ago against content hash b5e0222453ea, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

compose-multiplatform-best-practices 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 9d 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.

compose-multiplatform-best-practices/SKILL.md · 49 lines

What it actually says

Compose Multiplatform Rules

Activate if shared UI composables exist in commonMain.

Hard Rules

  • No Android ViewModel in shared UI — use StateHolder pattern with StateFlow.
  • No android.* imports in shared composables — use Compose Multiplatform APIs.
  • No R.drawable or R.string — use Compose Resources API (Res.drawable, Res.string).
  • Navigation logic owned by platform layer or multiplatform navigation library — never depend on androidx.navigation directly in commonMain.
  • Use org.jetbrains.kotlin.plugin.compose Gradle plugin — not the old compiler artifact.
  • No LocalContext.current in shared code — it's Android-only.

Core Patterns

State Management

  • StateHolder class in commonMain exposes StateFlow<UiState>.
  • Platform layer wraps StateHolder with lifecycle-aware collection.
  • Shared composables receive state as parameters — fully stateless.

Platform-Specific UI

  • Use expect/actual @Composable functions for platform-specific widgets.
  • Keep platform composables minimal — delegate to shared composables where possible.
  • iOS: ComposeUIViewController hosts shared Compose UI in SwiftUI/UIKit.
  • Desktop: Window, Tray, MenuBar from compose.desktop.currentOs.

Resources

  • Use Compose Resources: org.jetbrains.compose.resources module.
  • Place resources in commonMain/composeResources/.
  • Access via generated Res object: Res.drawable.icon, Res.string.app_name.
  • Supports images, strings, fonts, and raw files across all platforms.

Navigation

  • Recommended libraries: Voyager, Decompose, or androidx.navigation (multiplatform alpha).
  • Define screen models/configurations in commonMain.
  • Platform entry points select the initial screen/route.

References

  • references/navigation.md
  • references/resources.md
  • references/platform_ui.md
  • references/ios_specific.md
  • references/desktop_specific.md
Files

What ships with it

5 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.

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. 9d ago First seen · 49 lines · 19 tokens per session scan A b5e0222453ea

Subscribe to this mod's changes

compose-multiplatform-best-practices is a skill published in the GitHub repository noloman/Android-AI-skills (6 stars, last pushed 6mo ago), licensed MIT. It adds 19 tokens to every session and 439 once invoked, about $0.0001 per session on Opus 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.

Kotlin and SwiftLanguagesMobile
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