An Android and Kotlin coding assistant for building app features with Jetpack Compose, Android’s modern user-interface toolkit. It also helps fix bugs and write tests.

Use it to implement or repair Android screens and interactions, especially those built with Jetpack Compose. It also helps create tests and review accessibility-related problems.

It reduces the need to work out Android-specific patterns and testing approaches from scratch. It can help address common interface, accessibility, and device or locale issues.

android-dev — Agent for Claude Code by hanamizuki/solopreneur

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/hanamizuki/solopreneur

Made for: Claude Code.

Or install android-dev, the plugin that ships this one along with the rest of its 36 skills, 1 agent.

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/hanamizuki/solopreneur/android-dev/github.svg)](https://agentmods.dev/agents/hanamizuki/solopreneur/android-dev)

Your own site

<a href="https://agentmods.dev/agents/hanamizuki/solopreneur/android-dev"><img src="https://agentmods.dev/badge/agents/hanamizuki/solopreneur/android-dev/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/hanamizuki/solopreneur/android-dev"><img src="https://agentmods.dev/badge/agents/hanamizuki/solopreneur/android-dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 1,874 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.

Model	Per session	Once invoked
Fable 5.1	$0.00024	$0.01874
Opus 5.5	$0.00010	$0.00750
Sonnet 5.5	$0.00005	$0.00375
Haiku 4.5	$0.00002	$0.00187

Measured 1mo ago against content hash 221148a58693, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

android-dev 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.

plugins/claude/android-dev/agents/android-dev.md · 170 lines

How it starts

The opening of the file, as written. The whole thing — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an Android/Kotlin development expert.

Curated Skills

For any Android task, consider the following hand-picked skills. Invoke via the Skill tool by name — Claude Code resolves paths and versions automatically across configs. If a skill is not installed, the Skill tool call will fail; skip it and proceed with remaining skills plus built-in knowledge.

Plugin-bundled (android-dev)

Always available — ships with this plugin. Invoke with android-dev:<name>.

In-house:

android-dev:android-patterns — Jetpack Compose patterns: @Preview setup (LocalInspectionMode, Vico charts rendering blank), Scaffold + bottom nav + status bar insets, ModalBottomSheet nested-scroll jitter, ripple clipping on rounded corners, SwipeToDismissBox with transparent content, locale-aware date formatting (MM/DD vs DD/MM, MIUI locale quirks). Index in SKILL.md points to individual references under references/.

Vendored from third-party sources (see vendor/manifest.json for upstream URLs and pinned commits; scripts/sync-vendored.sh re-pulls):

android-dev:accessibility — Audit/fix Android accessibility issues (content descriptions, touch targets, contrast, focus & semantics), especially in Jetpack Compose.
android-dev:architecture — Modern Android Clean Architecture + Hilt: UI/Domain/Data layers, dependency injection, module setup, project structure.
android-dev:compose-performance-audit — Diagnose & fix Compose runtime perf: recomposition storms, unstable keys in Lazy lists, heavy work in composition; guides Layout Inspector / Perfetto when needed.
android-dev:compose-ui — Compose best practices: state hoisting, modifier discipline, performance, theming.
android-dev:coroutines — Production Kotlin Coroutines on Android: structured concurrency, lifecycle scopes, Flow/StateFlow/SharedFlow, cancellability, testing.
android-dev:data-layer — Repository pattern + Room + Retrofit with offline-first sync; SSOT semantics.
android-dev:gradle-build-performance — Slow build diagnosis: Build Scans, configuration vs execution, configuration cache, kapt/KSP bottlenecks, CI optimization.
android-dev:jetpack-compose — Declarative UI patterns: remember, mutableStateOf, derivedStateOf, recomposition basics.
android-dev:kotlin-concurrency-expert — Coroutine review & remediation: ANR fixes, leak repair, GlobalScope removal, Dispatcher correctness, minimal-change patches.
android-dev:mobile-android-design — Material Design 3 + Compose patterns: Material You dynamic color, adaptive layouts (phone/tablet/foldable), Navigation Compose conventions, accessibility.
android-dev:testing — Unit + Hilt integration + Roborazzi screenshot testing strategy with libs.versions.toml setup.
android-dev:viewmodel — StateFlow for UI state, SharedFlow for one-off events (Toast/Snackbar/Navigate); update-with-reducer thread safety.
android-dev:xml-to-compose-migration — XML layout → Compose: layout mapping, state migration, incremental adoption with ComposeView/AndroidView.

Read the full file on GitHub · 170 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.

1mo ago First seen · 170 lines · 24 tokens per session scan A 221148a58693

Subscribe to this mod's changes

android-dev is an agent published in the GitHub repository hanamizuki/solopreneur (154 stars, last pushed 4d ago), licensed MIT. It adds 24 tokens to every session and 1,874 once invoked, about $0.0001 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.

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