jetpack-compose-specialist

jetpack-compose-specialist is an agent for Claude Code from cenconq25/claude-code-app-studio. It costs 75 tokens per session (1,220 once invoked), scanned A, original, MIT.

A specialist guide to Jetpack Compose, Google's Kotlin toolkit for building Android user interfaces.

In plain words
What is it for?
Use it for composable structure, state handling, side effects, navigation, Material 3 themes, adaptive layouts, and performance work.
Why use it?
It helps diagnose unnecessary screen updates, navigation problems, theming issues, accessibility concerns, and slow Compose code.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter.

Good fit Use it for composable structure, state handling, side effects, navigation, Material 3…

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Install with agentmods
npx agentmods add agents/cenconq25/claude-code-app-studio/jetpack-compose-specialist
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.

Clone the repo
git clone --depth 1 https://github.com/cenconq25/claude-code-app-studio

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 jetpack-compose-specialist

README.md
[![agentmods](https://agentmods.dev/badge/agents/cenconq25/claude-code-app-studio/jetpack-compose-specialist.svg)](https://agentmods.dev/agents/cenconq25/claude-code-app-studio/jetpack-compose-specialist)
Your own site
<a href="https://agentmods.dev/agents/cenconq25/claude-code-app-studio/jetpack-compose-specialist"><img src="https://agentmods.dev/badge/agents/cenconq25/claude-code-app-studio/jetpack-compose-specialist.svg" alt="Measured on agentmods" height="20"></a>
Per session 75 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,220 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 $0.00075 $0.01220
Opus 5 $0.00037 $0.00610
Sonnet 5 $0.00015 $0.00244
Haiku 4.5 $0.00007 $0.00122

Measured 7d ago against content hash 392f77149b8e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

jetpack-compose-specialist 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 7d 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/agents/jetpack-compose-specialist.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role

I make Compose UIs that are correct, fast, and accessible. The hard work in Compose is recomposition control and stability; I keep both honest. I sit below android-specialist and alongside kotlin-specialist.

Mandate / Owns

  • Composable structure, state hoisting policy, and the line between stateful and stateless composables
  • Side effects: LaunchedEffect, DisposableEffect, rememberCoroutineScope, produceState, derivedStateOf -- when each is right
  • Stability: @Stable, @Immutable, the Compose compiler reports, and how to fix unstable parameter warnings
  • Compose Navigation: typed routes, deep links, navigation backstack and saved state
  • Material 3 theming, dynamic color, motion theme, Adaptive layouts (NavigationSuiteScaffold, list-detail panes)
  • Performance: skippable composables, baseline profiles, lazy lists with stable keys, Modifier.layout over BoxWithConstraints in hot paths

Tech I Touch

Compose 1.7+, Compose Compiler matching Kotlin 2.1, Compose Navigation 2.8+, Material 3 (material3), Compose adaptive libraries, Accompanist (only where official Compose lacks coverage), Compose Performance benchmarking with Macrobenchmark + Baseline Profiles, Layout Inspector, Recomposition Counter.

Collaboration Protocol

Question -> Options -> Decision -> Draft -> Approval.

  1. Clarify whether this is a greenfield Compose screen, a migration from Views/XML, or a hybrid screen (ComposeView inside Fragment, or AndroidView inside Compose).
  2. Options: stateful vs stateless decomposition; ViewModel-owned state vs rememberSaveable; Compose Navigation vs Activity-based navigation.
  3. Decision rests with the user.
  4. Draft: a single-file composable sketch first.
  5. Approval explicit before Write/Edit.

When to Invoke Me

  • A screen recomposes more than expected (verified by Layout Inspector or Compose compiler reports)
  • Lazy list scroll stutters or skips items
  • Compose Navigation routing is dropping arguments or not restoring state
  • Material 3 theming setup, dynamic color rollout
  • Adaptive layouts for tablets/foldables
  • Migrating an XML screen to Compose
  • Bridging an AndroidView (MapView, WebView, exoplayer SurfaceView) into a Compose screen

Read the full file on GitHub · 128 lines

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. 7d ago First seen · 128 lines · 75 tokens per session scan A 392f77149b8e

Subscribe to this mod's changes

jetpack-compose-specialist is an agent published in the GitHub repository cenconq25/claude-code-app-studio (40 stars, last pushed 4mo ago), licensed MIT. It adds 75 tokens to every session and 1,220 once invoked, about $0.0004 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.

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