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compose-agent

compose-agent is a skill for Claude Code from hamen/compose_skill. It costs 89 tokens per session (3,784 once invoked), scanned A, original, MIT.

A review and coding guide for Android Jetpack Compose, the Kotlin toolkit for building user interfaces in code. It checks state, side effects, performance, API design, and use of current AndroidX guidance.

In plain words
What is it for?
Use it to review, write, or modify Compose code involving state flow, effects, lazy lists, animations, navigation, coroutines, tests, focus, or multiplatform code.
Why use it?
It helps identify real correctness and maintainability problems without treating harmless style differences as bugs. It also accounts for older versions pinned by the project.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the compose-agent plugin — 1 skill shipped together

not rated 372repo +2 3mo ago A scan SkillSpector: warn 89 tokens original MIT

Good fit Use it to review, write, or modify Compose code involving state flow, effects, lazy lists, animations, navigation, coroutines, tests, focus, or multiplatform code.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hamen/compose_skill/compose-agent
View source ↗ hamen/compose_skill
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 hamen/compose_skill --skill compose-agent
Clone the repo
git clone --depth 1 https://github.com/hamen/compose_skill

Made for: Claude Code.

Or install compose-agent, the plugin that ships this one along with the rest of its 1 skill.

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-agent

README.md
[![agentmods](https://agentmods.dev/badge/skills/hamen/compose_skill/compose-agent/github.svg)](https://agentmods.dev/skills/hamen/compose_skill/compose-agent)
Your own site
<a href="https://agentmods.dev/skills/hamen/compose_skill/compose-agent"><img src="https://agentmods.dev/badge/skills/hamen/compose_skill/compose-agent/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-agent

Your own site · 80×15
<a href="https://agentmods.dev/skills/hamen/compose_skill/compose-agent"><img src="https://agentmods.dev/badge/skills/hamen/compose_skill/compose-agent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 89 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,784 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 57
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Memory Poisoning · line 175
    Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.
    Fix: Implement context-window management that detects and rejects padding or stuffing attempts. Prioritize system instructions over user-injected content.
How audits are shown
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 $0.00089 $0.03784
Opus 5.5 $0.00036 $0.01514
Sonnet 5.5 $0.00018 $0.00757
Haiku 4.5 $0.00009 $0.00378

Measured 1mo ago against content hash 7c815dc8f21e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

compose-agent 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 1mo 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.

skills/compose-agent/SKILL.md · 197 lines

How it starts

The opening of the file, as written. The whole thing — 197 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Compose Agent

Review, write, or modify Jetpack Compose code for correctness, modern API usage, and adherence to the official AndroidX guidelines. Report only genuine problems — do not nitpick or invent issues.

Target track (unless the repo says otherwise):

  • Kotlin 2.0.20+ with Compose Compiler 1.5.4+ (Strong Skipping Mode on by default).
  • Jetpack Compose BOM current, Material 3, androidx.lifecycle with collectAsStateWithLifecycle().
  • Navigation 3 (androidx.navigation3) when the project can adopt it; otherwise Navigation 2.8+.
  • Coroutines + Flow as the async primitives. Do not reach for RxJava or blocking I/O.

If the repo pins older versions, match the repo — but call out what the modern path would look like in a one-line note.

Review Process

  1. Check for deprecated or soft-deprecated API using references/api.md.
  2. Validate state and data flow using references/state.md.
  3. Validate side-effect choice (LaunchedEffect, DisposableEffect, produceState, snapshotFlow, rememberUpdatedState) using references/effects.md.
  4. Review composable performance — stability, lambda modifiers, lazy list keys, deferred reads, cross-phase back-writes — using references/performance.md.
  5. Review modifier usage — ordering, lambda-form, Modifier.Node over composed { } — using references/modifiers.md.
  6. Review navigation using references/navigation.md — start from its decision table (Nav3 vs Nav2 type-safe vs plain state) before touching call sites.
  7. Review coroutines and lifecycle collection using references/concurrency.md.
  8. Review Flow operators and StateFlow / SharedFlow shape (stateIn, shareIn, flatMap variants, combine, error handling, backpressure, asStateFlow()) using references/flows.md.
  9. Review composable API shape (parameter order, slots, naming, defaults) using references/component-api.md.
  10. Review UI testing patterns using references/testing.md when tests, semantics, screenshots, previews, or fake UI dependencies are in scope.
  11. Review focus and keyboard / D-pad navigation using references/focus.md when the UI uses focus APIs, keyboard input, TV, desktop, ChromeOS, or accessibility focus behavior.
  12. Review Compose Multiplatform / KMP boundaries using references/kmp.md when common code, expect / actual, platform services, native views, or shared UI targets are in scope.
  13. Review animation API choice and lifecycle — declarative vs imperative, remembered Animatable, target-driven launches, spring over tween, deferred animated reads, AnimatedContent keys — using references/animation.md when any animate*, Animatable, Transition, AnimatedVisibility, AnimatedContent, or infinite-transition API is in scope.
  14. Review Paging 3 in Compose — collectAsLazyPagingItems (the paging differ — not collectAsStateWithLifecycle, which does not apply to PagingData), stable itemKey, LoadState branches, user-driven refresh() / retry() — using references/paging.md when LazyPagingItems, PagingData, or collectAsLazyPagingItems is in scope.
  15. Final Kotlin style pass using references/kotlin.md.

Read the full file on GitHub · 197 lines

Files

What ships with it

18 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. 1mo ago First seen · 197 lines · 89 tokens per session scan A 7c815dc8f21e

Subscribe to this mod's changes

compose-agent is a skill published in the GitHub repository hamen/compose_skill (372 stars, last pushed 3mo ago), licensed MIT. It adds 89 tokens to every session and 3,784 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 2026-08-30.

Kotlin and SwiftLanguagesMobile
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