android-jetpack-compose

Guidance for building Android user interfaces with Jetpack Compose, Android's code-based UI toolkit. It covers state held with remember and mutableStateOf, plus declarative UI patterns that describe what the screen should show.

In plain words
What is it for?
Use it when creating Android Compose interfaces, managing local UI state, or implementing declarative screen behavior.
Why use it?
It helps developers understand Compose's state-driven approach and avoid managing screens with outdated imperative patterns. It also gives direction for keeping UI updates tied to state changes.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/maxrave-dev/simpmusic/jetpack-compose
Any agent
npx skills add maxrave-dev/SimpMusic --skill jetpack-compose
Clone the repo
git clone --depth 1 https://github.com/maxrave-dev/SimpMusic

Made for: Claude Code, Codex.

Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,034 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00033 $0.02034
Opus 5 $0.00016 $0.01017
Sonnet 5 $0.00007 $0.00407
Haiku 4.5 $0.00003 $0.00203

Measured 2d ago against content hash cca719c0a120, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

android-jetpack-compose 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 2d 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.

.claude/skills/jetpack-compose/SKILL.md · 420 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 2d ago First seen · 420 lines · 33 tokens per session scan A cca719c0a120

Subscribe to this mod's changes

android-jetpack-compose is a skill published in the GitHub repository maxrave-dev/SimpMusic (10,880 stars, last pushed yesterday), licensed GPL-3.0. It adds 33 tokens to every session and 2,034 once invoked, about $0.0002 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 2026-08-30.

Related

Other skills, from other repositories

android-expert

Android platform patterns for the amethyst/ module. Use when working with (1) Android navigation (Navigation Compose, type-safe routes, bottom nav), (2) runtime permissions (camera, notifications, biometrics), (3) platform APIs (Intent, Context, Activity, ContentResolver), (4) Material3 theming and edge-to-edge UI…

vitorpamplona/amethyst · 149 tokens

quartz-integration

Integration guide for using the Quartz Nostr KMP library in external projects. Use when: (1) adding Quartz as a Gradle dependency, (2) setting up NostrClient with WebSocket, (3) creating/signing/sending events, (4) building relay subscriptions with Filter, (5) handling keys with KeyPair/NostrSignerInternal, (6) using…

vitorpamplona/amethyst · 161 tokens

compose-expert

Advanced Compose Multiplatform UI patterns for shared composables. Use when working with visual UI components, state management patterns (remember, derivedStateOf, produceState), recomposition optimization (@Stable/@Immutable visual usage), Material3 theming, custom ImageVector icons, or determining whether to share…

vitorpamplona/amethyst · 98 tokens

compose-modifier-and-layout-style

Use when writing or reviewing Jetpack Compose layout APIs, modifier parameters, modifier chain construction, hardcoded root layout decisions, or layout wrappers around a single conditional. Technique-layer skill — complements the codebase-specific compose-expert.

vitorpamplona/amethyst · 52 tokens

kotlin-multiplatform

Platform abstraction decision-making for Amethyst KMP project. Guides when to abstract vs keep platform-specific, source set placement (commonMain, jvmAndroid, platform-specific), expect/actual patterns. Covers primary targets (Android, JVM/Desktop, iOS — all mature) with web/wasm as possible future targets.…

vitorpamplona/amethyst · 119 tokens

compose-side-effects

Use when writing or reviewing Jetpack Compose code with LaunchedEffect, DisposableEffect, SideEffect, rememberCoroutineScope, rememberUpdatedState, snapshotFlow, snackbar, navigation, focus requests, analytics, or event Flow collection. Technique-layer skill — complements the codebase-specific compose-expert.

vitorpamplona/amethyst · 62 tokens